Misplaced Pages

Firefox version history: Difference between revisions

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Browse history interactively← Previous editContent deleted Content addedVisualWikitext
Revision as of 19:08, 20 December 2018 view source71.105.60.227 (talk) →Versions 30 through 39Tag: references removed← Previous edit Latest revision as of 23:24, 7 January 2025 view source Angeldeb82 (talk | contribs)Autopatrolled, Extended confirmed users60,958 edits →Firefox 128 through 139: Firefox 134. 
(819 intermediate revisions by more than 100 users not shown)
Line 1: Line 1:
{{Short description|none}}
{{Use mdy dates|date=September 2018}}
{{pp-dispute|small=yes}}
{{Multiple issues|
{{Cleanup|date=May 2023|reason=Lots of re-used words, grammar errors, many sources to Mozilla's release note pages that don't have any secondary sourcing.}}
{{Lead too short|date=January 2023}}
}}
{{Use mdy dates |date=September 2018}}
{{Firefox usage share}}


] was created by ] and ] as an experimental branch of the ] browser, first released as ] on November 9, 2004. Starting with ], a rapid release cycle was put into effect, resulting in a new major version release every six weeks. This was gradually accelerated further in late 2019, so that new major releases occur on four-week cycles starting in 2020.<ref>{{cite web |last1=Kothari |first1=Ritu |last2=Or |first2=Yan |title=Moving Firefox to a faster 4-week release cycle |url=https://hacks.mozilla.org/2019/09/moving-firefox-to-a-faster-4-week-release-cycle/ |website=Mozilla Hacks |access-date=26 February 2020 |archive-date=February 20, 2020 |archive-url=https://web.archive.org/web/20200220060903/https://hacks.mozilla.org/2019/09/moving-firefox-to-a-faster-4-week-release-cycle/ |url-status=live }}</ref>
This is the version history of the ] web browser.


== Current and future releases == == Early versions ==
{{main|Firefox early version history}}
{{Columns-start|num=2|width=800px;}}
{{Column}}
=== Current supported official releases ===
:*]
:*]


== Rapid releases ==
{{Column}}
In March 2011, Mozilla presented plans to switch to a faster 16-week ], similar to ]. '']'' noted that this new cycle entailed "significant technical and operational challenges" for Mozilla (notably preserving third-party ] compatibility), but that it would help accelerate Firefox's adoption of new web standards, feature, and performance improvements.<ref name=":2">{{Cite web |last=Paul |first=Ryan |date=2011-03-18 |title=Mozilla outlines 16-week Firefox development cycle |url=https://arstechnica.com/information-technology/2011/03/mozilla-outlines-16-week-firefox-development-cycle/ |access-date=2023-04-22 |website=Ars Technica |language=en-us |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422162557/https://arstechnica.com/information-technology/2011/03/mozilla-outlines-16-week-firefox-development-cycle/ |url-status=live }}</ref><ref>{{Cite web |last=Paul |first=Ryan |date=2011-02-14 |title=Is Mozilla's 2011 roadmap unrealistically ambitious? |url=https://arstechnica.com/information-technology/2011/02/is-mozillas-2011-roadmap-unrealistically-ambitious/ |access-date=2023-04-22 |website=Ars Technica |language=en-us |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422162558/https://arstechnica.com/information-technology/2011/02/is-mozillas-2011-roadmap-unrealistically-ambitious/ |url-status=live }}</ref> This plan was implemented in April 2011.<ref>{{Cite web |last=Siegler |first=M. G. |date=2011-04-13 |title=Mozilla Introduces Aurora, The Pre-Beta, Post-Nightly Firefox — It's Their "Dev" Build |url=https://techcrunch.com/2011/04/13/mozilla-aurora/ |access-date=2023-04-22 |website=TechCrunch |language=en-US |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422162557/https://techcrunch.com/2011/04/13/mozilla-aurora/ |url-status=live }}</ref> The release process was split into four "channels", with major releases trickling down to the next channel every six to eight weeks. For example, the nightly channel would feature a preliminary unstable version of Firefox 6, which would move to the experimental "Aurora" channel after preliminary testing, then to the more stable "beta" channel, before finally reaching the public release channel, with each stage taking around six weeks.<ref name="Anthony">{{Cite web |last=Anthony |first=Sebastian |date=2017-04-18 |title=Firefox kills off Aurora channel to speed up release of new features |url=https://arstechnica.com/information-technology/2017/04/firefox-aurora-killed-off/ |access-date=2023-04-22 |website=Ars Technica |language=en-us |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422162557/https://arstechnica.com/information-technology/2017/04/firefox-aurora-killed-off/ |url-status=live }}</ref><ref name=":2" /><ref>{{Cite magazine |last= |date=April 14, 2011 |title=How to Use Firefox's New 'Aurora' Release Channel |language=en-US |magazine=Wired |url=https://www.wired.com/2011/04/how-to-use-firefoxs-new-aurora-release-channel/ |access-date=2023-04-22 |issn=1059-1028}}</ref> For corporations, Mozilla introduced an Extended Support Release channel, with new versions released every 30 weeks (and supported for 12 more weeks after a new ESR version is released), though Mozilla warned that it would be less secure than the release channel, since security patches would only be ] for high-impact vulnerabilities.<ref>{{Cite web |last=Kingsley-Hughes |first=Adrian |date=September 22, 2011 |title=Mozilla attempts to appease enterprise users with talk of 42-week Firefox release cycle |url=https://www.zdnet.com/article/mozilla-attempts-to-appease-enterprise-users-with-talk-of-42-week-firefox-release-cycle/ |access-date=2023-04-22 |website=ZDNET |language=en |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422162557/https://www.zdnet.com/article/mozilla-attempts-to-appease-enterprise-users-with-talk-of-42-week-firefox-release-cycle/ |url-status=live }}</ref>


In 2017, Mozilla abandoned the Aurora channel, which saw low uptake, and ] Firefox Developer Edition onto the beta channel.<ref>{{Cite web |last=Protalinski |first=Emil |date=2017-04-17 |title=Mozilla kills Firefox Aurora channel, builds will move directly from Nightly to Beta |url=https://venturebeat.com/business/mozilla-kills-firefox-aurora-channel-builds-will-move-directly-from-nightly-to-beta/ |access-date=2023-04-22 |website=VentureBeat |language=en-US |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422162557/https://venturebeat.com/business/mozilla-kills-firefox-aurora-channel-builds-will-move-directly-from-nightly-to-beta/ |url-status=live }}</ref> Mozilla uses ]<ref>{{Cite web |last1=Kothari |first1=Ritu |last2=Or |first2=Yan |date=September 17, 2019 |title=Moving Firefox to a faster 4-week release cycle |url=https://hacks.mozilla.org/2019/09/moving-firefox-to-a-faster-4-week-release-cycle |access-date=2023-04-22 |website=Mozilla |language=en-US |archive-date=May 21, 2023 |archive-url=https://web.archive.org/web/20230521004831/https://hacks.mozilla.org/2019/09/moving-firefox-to-a-faster-4-week-release-cycle/ |url-status=live }}</ref> and a staged rollout mechanism for the release channel, where updates are first presented to a small fraction of users, with Mozilla monitoring its telemetry for increased crashes or other issues before the update is made available to all users.<ref name="Anthony"/> In 2020, Firefox moved to a four-week release cycle, to catch up with Chrome in support for new web features.<ref>{{Cite web |last=Cimpanu |first=Catalin |date=September 17, 2019 |title=Mozilla to release a new Firefox version every four weeks starting next year |url=https://www.zdnet.com/article/mozilla-to-release-a-new-firefox-version-every-four-weeks-starting-next-year/ |access-date=2023-04-22 |website=ZDNET |language=en |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422164059/https://www.zdnet.com/article/mozilla-to-release-a-new-firefox-version-every-four-weeks-starting-next-year/ |url-status=live }}</ref><ref>{{Cite web |last=Protalinski |first=Emil |date=2020-01-07 |title=Firefox 72 arrives with fingerprinting blocked by default, Picture-in-Picture on macOS and Linux |url=https://venturebeat.com/business/mozilla-firefox-72/ |access-date=2023-04-22 |website=VentureBeat |language=en-US |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422164101/https://venturebeat.com/business/mozilla-firefox-72/ |url-status=live }}</ref> Chrome switched to a four-week cycle a year later.<ref>{{Cite web |last=Lardinois |first=Frederic |date=2021-03-04 |title=Google speeds up its release cycle for Chrome |url=https://techcrunch.com/2021/03/04/google-speeds-up-its-release-cycle-for-chrome/ |access-date=2023-04-22 |website=TechCrunch |language=en-US |archive-date=April 22, 2023 |archive-url=https://web.archive.org/web/20230422162557/https://techcrunch.com/2021/03/04/google-speeds-up-its-release-cycle-for-chrome/ |url-status=live }}</ref>
=== Current supported test releases ===
:*]
:*]
:*]
{{Columns-end}}


=== Firefox 5 through 9 {{anchor|Firefox 5}}===
{{Columns-start|num=2|width=800px;}}
Firefox 5 was released on June 21, 2011,<ref name="Firefox 5.0">{{Cite web |last=Wong |first=Dennis |title=Firefox 5 released |url=https://www.neowin.net/news/firefox-5-released/ |access-date=2023-05-04 |date=2023-06-18 |website=] |language=en}}</ref> three months after the major release of Firefox 4. Firefox 5 is the first release in Mozilla's new rapid release plan, matching ]'s rapid release schedule and rapid version number increments.<ref>{{cite news |last=Bright |first=Peter |title=Firefox update policy: the enterprise is wrong, not Mozilla |website=Ars Technica |date=June 27, 2011 |url=https://arstechnica.com/business/news/2011/06/firefox-update-policy-the-enterprise-is-wrong-not-mozilla.ars |access-date=2013-11-19 |archive-date=May 9, 2012 |archive-url=https://web.archive.org/web/20120509051632/http://arstechnica.com/business/news/2011/06/firefox-update-policy-the-enterprise-is-wrong-not-mozilla.ars? |url-status=live }}</ref> Firefox 5 has significantly improved the speed of web-related tasks, such as loading pages with ]es or ]. Mozilla also integrated the ] ] standard into the browser, allowing playback of WebM videos.<ref>{{cite web |title=Firefox Release Tracking |website=Mozilla Wiki |publisher=Mozilla |url=https://wiki.mozilla.org/Features/Release_Tracking/Archives#Firefox_5 |access-date=April 21, 2012 |archive-date=May 4, 2012 |archive-url=https://web.archive.org/web/20120504210539/https://wiki.mozilla.org/Features/Release_Tracking/Archives#Firefox_5 |url-status=live }}</ref>
{{Column}}


Firefox 6 was released on August 16, 2011, introducing a permissions manager, new address bar highlighting (the ] is black while the rest of the ] is gray<ref name="Add-ons">{{cite web |title=Classic Compact Options |website=addons.mozilla.org |publisher=Mozilla |url=https://addons.mozilla.org/en-us/firefox/addon/classic-compact-options/ |access-date=February 1, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120502164326/https://addons.mozilla.org/en-US/firefox/addon/classic-compact-options/ |archive-date=May 2, 2012}}</ref>), streamlining the look of the site identity block, a quicker startup time, a ScratchPad JavaScript compiler, and many other new features. This update also brought the infamous feature that caused JavaScript entered in the address bar to not run.<ref name="Firefox 6.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/6.0/releasenotes/ |title=Mozilla Firefox 6 Release Notes |publisher=Mozilla |access-date=February 1, 2012 |date=August 16, 2011 |archive-date=March 6, 2014 |archive-url=https://web.archive.org/web/20140306215001/http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/6.0/releasenotes/ |url-status=live }}</ref>
=== Future official releases ===
;Rapid:
;*]
;*]
;*]
;*]
;*]
;*]
;*]


Firefox 7 was released on September 27, 2011,<ref name="Firefox 7.0">{{Cite web |last=Cunningham |first=Andrew |title=Firefox 7.0 Released |url=https://www.anandtech.com/show/4883/firefox-70-released |access-date=2023-05-04 |website=Anandtech |archive-date=May 4, 2023 |archive-url=https://web.archive.org/web/20230504073821/https://www.anandtech.com/show/4883/firefox-70-released |url-status=live }}</ref> and uses as much as 50% less ] than Firefox 4 as a result of the MemShrink project to reduce Firefox memory usage.<ref>{{cite web |url=https://blog.mozilla.org/nnethercote/2011/08/09/firefox-7-is-lean-and-fast-2/ |title=Firefox 7 is lean and fast |first=Nicholas |last=Nethercote |date=August 9, 2011 |access-date=August 17, 2011 |archive-date=June 2, 2012 |archive-url=https://web.archive.org/web/20120602060849/http://blog.mozilla.org/nnethercote/2011/08/09/firefox-7-is-lean-and-fast-2/ |url-status=live }}</ref><ref>{{cite web |url=https://wiki.mozilla.org/Performance/MemShrink |title=Performance/MemShrink |publisher=Mozilla |access-date=August 11, 2011 |archive-date=September 1, 2019 |archive-url=https://web.archive.org/web/20190901075326/https://wiki.mozilla.org/Performance/MemShrink |url-status=live }}</ref><ref>{{cite web |last=Mello |first=John P. |url=https://www.pcworld.com/article/238504/firefox_7_beta_puts_priority_on_performance.html |title=Firefox 7 Beta Puts Priority on Performance |website=PC World |date=August 19, 2011 |access-date=April 7, 2012 |archive-date=January 30, 2012 |archive-url=https://web.archive.org/web/20120130010246/http://www.pcworld.com/article/238504/firefox_7_beta_puts_priority_on_performance.html |url-status=live }}</ref> Firefox 7.0.1 was released a few days later to fix a rare, but serious, issue with add-ons not being detected by the browser.<ref>{{Cite web |last=Brinkmann |first=Martin |date=September 30, 2011 |title=Mozilla Rushes Out Firefox 7.0.1 Update |url=https://www.ghacks.net/2011/09/30/mozilla-rushes-out-firefox-7-01-update/ |access-date=May 4, 2013 |website=] |archive-date=April 2, 2013 |archive-url=https://web.archive.org/web/20130402041914/http://www.ghacks.net/2011/09/30/mozilla-rushes-out-firefox-7-01-update/ |url-status=live }}</ref> Some URLs are trimmed in the address bar, so the "]://" scheme no longer appears, but "]://" is still displayed. Trailing slashes on domains are also hidden, for example: <nowiki>https://www.example.org/</nowiki> becomes <nowiki>https://www.example.org</nowiki>.<ref name="Add-ons" /><ref>{{cite web |title=browser.urlbar.trimURLs |url=https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/Preference_reference/browser.urlbar.trimURLs |website=MDN web docs |publisher=Mozilla |access-date=31 January 2019 |archive-date=April 22, 2019 |archive-url=https://web.archive.org/web/20190422194805/https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/Preference_reference/browser.urlbar.trimURLs |url-status=dead }}</ref>
;ESR
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]


Firefox 8 was released on November 8, 2011<ref name="Firefox 8.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/8.0/releasenotes/ |title=Mozilla Firefox 8.0 Release Notes |publisher=Mozilla |date=2011-11-08 |access-date=10 November 2011 |archive-date=June 18, 2018 |archive-url=https://web.archive.org/web/20180618230259/https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/8.0/releasenotes/ |url-status=live }}</ref> and prompts users about any previously installed add-ons. Upon installation, a ] prompted users to enable or disable the add-ons. Add-ons installed by third-party programs were disabled by default, but user-installed add-ons were enabled by default. Mozilla judged that third-party-installed add-ons were problematic, taking away user control, lagging behind on compatibility and security updates, slowing down Firefox startup and page loading time, and cluttering the interface with unused ]s.<ref>{{cite web |url=https://www.cnet.com/news/firefox-8-cracks-down-on-add-ons/ |title=Firefox 8 cracks down on add-ons |website=cnet |date=November 9, 2011 |access-date=September 17, 2021 |archive-date=September 17, 2021 |archive-url=https://web.archive.org/web/20210917031808/https://www.cnet.com/news/firefox-8-cracks-down-on-add-ons/ |url-status=live }}</ref> Added option in preferences to lazy load session tabs (prior to that it could be switched by config setting since version 4.0 beta 7<ref>{{Cite web |date=2010-09-17 |title=Cascaded Session Restore + a Hidden Bonus |url=https://zpao.com/posts/cascaded-session-restore-a-hidden-bonus/ |access-date=2024-06-19 |website=zpao.com |archive-date=June 19, 2024 |archive-url=https://web.archive.org/web/20240619223847/https://zpao.com/posts/cascaded-session-restore-a-hidden-bonus/ |url-status=live }}</ref>).<ref>{{Cite web |date=2011-08-17 |title=max_concurrent_tabs is Dead; Long Live restore_on_demand |url=https://zpao.com/posts/max-concurrent-tabs-is-dead/ |access-date=2024-06-19 |website=zpao.com |archive-date=June 19, 2024 |archive-url=https://web.archive.org/web/20240619223847/https://zpao.com/posts/max-concurrent-tabs-is-dead/ |url-status=live }}</ref>
{{Column|width=400px;}}


{{anchor|Firefox 9}}
=== Future test releases ===
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
:*]
{{Columns-end}}


Firefox 9 was released on December 20, 2011, includes various new features such as Type Inference, which boosts JavaScript performance up to 30%, improved theme integration for ], added two-finger swipe navigation for Mac OS X Lion, added support for querying ] status via JavaScript, added support for font-stretch, improved support for text-overflow, improved standards support for HTML5, MathML, and CSS, and fixed several security problems. It also features a large list of bug fixes.<ref>{{Cite web |last=Burgess |first=Brian |date=2011-12-20 |title=Firefox 9.0 Now Available for Download |url=https://www.groovypost.com/news/firfox-9-available-now/ |access-date=2023-05-04 |website=groovyPost |language=en-US |archive-date=January 18, 2024 |archive-url=https://web.archive.org/web/20240118095823/https://www.groovypost.com/news/firfox-9-available-now/ |url-status=live }}</ref>
== Release history ==
The tables below are in chronological order by release number, so the tables near the bottom contain the ], the ], and the ].<!-- this statement is mostly pretty obvious, but explicitly saying it provides a way to link to relevant tables for specific audiences -->


=== Early releases through version 4 === === Firefox 10 through 16 ===
Firefox 10 and Firefox ESR 10 were released on January 31, 2012.<ref name="Firefox 10.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0/releasenotes/ |title=Mozilla Firefox 10.0 Release Notes |publisher=Mozilla |date=2012-01-31 |access-date=2012-01-31 |archive-date=June 19, 2018 |archive-url=https://web.archive.org/web/20180619012650/https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0/releasenotes/ |url-status=live }}</ref><ref name="ESR proposal">{{cite web |url=https://wiki.mozilla.org/Enterprise/Firefox/ExtendedSupport:Proposal |title=Mozilla Firefox Extended Support Release Proposal |publisher=Mozilla |date=2012-01-18 |access-date=2012-01-25 |archive-date=January 19, 2012 |archive-url=https://web.archive.org/web/20120119123039/https://wiki.mozilla.org/Enterprise/Firefox/ExtendedSupport:Proposal |url-status=live }}</ref> Firefox 10 added a full screen API and improved WebGL performance, support for CSS 3D Transforms and for ] in the WebGL standard for ] 3D graphics. These WebGL updates mean that more complex site and Web app animations can render smoothly in Firefox, and that developers can animate 2D objects into 3D without plug-ins.<ref>{{cite web |url=https://www.zdnet.com/article/firefox-10-eases-add-on-updates-but-no-android-yet/ |title=Firefox 10 eases add-on updates but no Android yet |author=zebra148 |website=ZDNet |date=February 2, 2012 |access-date=May 5, 2019 |archive-date=December 31, 2018 |archive-url=https://web.archive.org/web/20181231234417/https://www.zdnet.com/article/firefox-10-eases-add-on-updates-but-no-android-yet/ |url-status=live }}</ref><ref>{{cite web |url=https://arstechnica.com/information-technology/2012/01/firefox-10-arrives-with-new-dev-tools-and-full-screen-api/ |title=Firefox 10 arrives with new dev tools and full-screen API |last=Paul |first=Ryan |website=] |date=January 31, 2012 |access-date=May 5, 2019 |archive-date=December 31, 2018 |archive-url=https://web.archive.org/web/20181231234311/https://arstechnica.com/information-technology/2012/01/firefox-10-arrives-with-new-dev-tools-and-full-screen-api/ |url-status=live }}</ref> It also introduced a new CSS Style Inspector, which allow users to check out a site's structure and edit the CSS without leaving the browser.<ref name="Firefox 10.0"/> Firefox 10 assumed all add-ons made for at least Firefox 4 were compatible. The add-on developer is able to alert Mozilla that the add-on is incompatible, overriding compatibility with version 10 or later. This new rule also does not apply to themes.<ref>{{cite web |url=https://wiki.mozilla.org/Features/Add-ons/Add-ons_Default_to_Compatible |title=Add-ons default to compatible |last=Scott |first=Justin |publisher=Mozilla |access-date=April 21, 2012 |archive-date=October 1, 2019 |archive-url=https://web.archive.org/web/20191001004113/https://wiki.mozilla.org/Features/Add-ons/Add-ons_Default_to_Compatible |url-status=live }}</ref>


Firefox 10 ESR is the first ''Extended Support Release (ESR)'' as previously on January 10, 2012, where the Mozilla Foundation announced the availability of an ESR version of Firefox.<ref>{{cite news |url=https://blog.mozilla.org/blog/2012/01/10/delivering-a-mozilla-firefox-extended-support-release/ |title=Delivering a Mozilla Firefox Extended Support Release |date=January 10, 2012 |access-date=February 4, 2012 |archive-date=April 17, 2012 |archive-url=https://web.archive.org/web/20120417221341/http://blog.mozilla.org/blog/2012/01/10/delivering-a-mozilla-firefox-extended-support-release/ |url-status=live }}</ref> Firefox ESR is intended for groups who deploy and maintain the desktop environment in large organizations such as universities and other schools, county or city governments and businesses. During the extended cycle, no new features will be added to a Firefox ESR, only high-risk/high-impact security vulnerabilities or major stability issues will be corrected.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/organizations/ |title=Mozilla Firefox ESR Overview |publisher=Mozilla Foundation |access-date=October 2, 2012 |archive-date=March 7, 2012 |archive-url=https://web.archive.org/web/20120307001306/https://www.mozilla.org/en-US/firefox/organizations/ |url-status=live }}</ref>
<section begin=color table />
{|class="wikitable sortable"
| style="background:Salmon;"|
| Former release
|style="background:Pink;"|
| Former test release
| style="background:Khaki;"|
| Former release – still supported
| style="background:#a0e75a;"|
| Current supported official release
| style="background:Aquamarine;"|
| Current supported test release
| style="background:SkyBlue;"|
| Future official release
| style="background:Plum;"|
| Future test release
| width="28px" align="center"| ]
|}<section end=color table />


]
{{anchor|FeatureHistoryTable}}
Firefox 11 was released on March 13, 2012. Firefox 11 introduced many new features, including migration of bookmarks and history from ],<ref>{{cite web |last=Lowe |first=Alistair |url=https://hexus.net/business/news/internet/36525-mozilla-launches-firefox-11-now-chrome-migration/ |title=Mozilla launches Firefox 11, now with Chrome migration |website=HEXUS.net |date=March 14, 2012 |access-date=June 20, 2013 |archive-date=January 22, 2013 |archive-url=https://web.archive.org/web/20130122200412/http://hexus.net/business/news/internet/36525-mozilla-launches-firefox-11-now-chrome-migration/ |url-status=live }}</ref> ] integrated services, {{visible anchor|3Dinspector|text=Page Inspector Tilt (3D View)}}, ] ], redesigned ] video controls, and the Style Editor (]).<ref>{{cite web |url=https://wiki.mozilla.org/Releases/Firefox_11/Test_Plan |title=Mozilla Firefox 11 test plan |publisher=Mozilla |access-date=March 13, 2012 |archive-date=May 5, 2012 |archive-url=https://web.archive.org/web/20120505231207/https://wiki.mozilla.org/Releases/Firefox_11/Test_Plan |url-status=live }}</ref> The update also fixed many bugs, and improved developer tools.<ref name="Firefox 11.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/11.0/releasenotes |title=Firefox 11 Release Notes |publisher=Mozilla |access-date=March 13, 2012 |archive-date=March 14, 2012 |archive-url=https://web.archive.org/web/20120314035059/http://www.mozilla.org/en-US/firefox/11.0/releasenotes/ |url-status=live }}</ref>
{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Gecko version
! Version
! Codename
! Release date<ref name="FFReleases">{{cite web|url=https://wiki.mozilla.org/Releases |title=Releases – MozillaWiki |publisher=Wiki.mozilla.org |date=2012-01-31 |accessdate=February 7, 2014}}</ref>
! Release type and highlights<ref group="t" name="highlights">Features highlighted may exist in beta stages prior to an official release build of the immediate version, or in an incremental minor version build prior to the last one.</ref>
|-
| style="vertical-align:top;" rowspan="5" | '''Phoenix'''
| style="vertical-align:top;" rowspan="3" | 1.2
| style="background:salmon;" | 0.1
| '']''
| September 23, 2002
| ''First release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.1.html |title=Phoenix 0.1 (Pescadero) Release Notes and FAQ |publisher=Mozilla |date=2002-09-23 |accessdate=2011-07-06}}</ref>
* Customizable toolbar
* Quicksearch
|-
| style="background:salmon;" | 0.2
| '']''
| October 1, 2002
| ''Official version 0.2 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/releases/0.2.html |title=Phoenix 0.2 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* Web form auto-complete
* Sidebar
** Downloads Sidebar
** Bookmarks Sidebar
** History Sidebar
* Extension management
* Toolbar customization
* Search bar
* Improved preference defaults
* Speed improvements
* Ctrl+Mousewheel to resize fonts
|-
| style="background:salmon;" | 0.3
| '']''
| October 14, 2002
| ''Official version 0.3 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/releases/0.3.html |title=Phoenix 0.3 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* Image Blocking
* Pop-up Blocking Whitelist
* Bookmarks Changes
* Global Go Menu and Other Menu Changes
* Tabbed Browsing Improvements
* Size and Speed Improvements
|-
| style="vertical-align:top;" rowspan="2" |1.3
| style="vertical-align:top; background:salmon;" | 0.4
| '']''
| October 19, 2002
| ''Official version 0.4 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/releases/0.4.html |title=Phoenix 0.4 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* Improvements to pop-up blocking
* Improvements to toolbar customization
* Improvements to tabbed browsing and shortcut keys
* Type ahead find returns
* Address bar gets smarter
* Themes
|-
| style="background:salmon;" | 0.5
| '']''
| December 7, 2002
| ''Official version 0.5 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/releases/0.5.html |title=Phoenix 0.5 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* Multiple homepages
* Intellimouse 5-button support
* Sidebar remembers its state across sessions
* Download fixes
* History improvements
* Accessibility improvements
* Size and memory reduction
* Performance improvements
* Stability improvements
* Better Windows appearance
* Many more new themes
|-
| style="vertical-align:top;" rowspan="4" | '''Firebird'''
| style="vertical-align:top;" rowspan="4" | 1.5
| style="background:salmon;" | 0.6
| '']''
| May 17, 2003
| ''Official version 0.6 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/releases/0.6.html |title=Mozilla Firebird 0.6 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* New default theme (Qute)
* Redesigned Preferences window
* Improved Privacy Options
* Improved Bookmarks
* Talkback enabled to tell Mozilla why the browser crashed
* Automatic Image Resizing
* Smooth Scrolling
* Access to more preferences through about:config
* Custom profile save location
* Mac OS X compatibility
|-
| style="background:salmon;" | 0.6.1
|
| July 28, 2003
| ''Bugfix release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.6.1.html |title=Mozilla Firebird 0.6.1 Release Notes and FAQ |publisher=Mozilla |date=2003-07-28 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 0.7
| '']''
| October 15, 2003
| ''Technology Preview.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/releases/0.7.html |title=Mozilla Firebird 0.7 Release Notes |publisher=Mozilla |accessdate=June 19, 2017}}</ref>
* Advanced preferences panel
* Download/helper apps preferences panel
* Cookie whitelisting
* New password manager (all passwords now stored encrypted<ref>{{cite web|url=http://ed.mullen.home.comcast.net/Mozilla/moz_pw.html |title=Mozilla Password Viewing |last=Mullen |first=Edward |archiveurl=https://web.archive.org/web/20070624065601/http://ed.mullen.home.comcast.net/Mozilla/moz_pw.html |archivedate=June 24, 2007 |accessdate=October 12, 2012 |deadurl=yes |df=mdy-all }}</ref>)
* Web panels (like Mozilla's sidebar panels)
* Alternate stylesheet support (through a status bar button)
* Send Page, Send Link, and Send Image menu items
* Autoscroll
|-
| style="background:salmon;" | 0.7.1
| '']''
| October 26, 2003
| ''Bugfix release'' for Mac OS X only.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.7.1.html |title=Mozilla Firebird 0.7.1 Release Notes |publisher=Mozilla |date=2003-10-26 |accessdate=2011-07-06}}</ref>
|-
| style="vertical-align:top;" rowspan="8" | '''Firefox'''
| 1.6
| style="background:salmon;" | 0.8
| '']''
| February 9, 2004
| ''Technology Preview.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/releases/0.8.html |title=Mozilla Firefox 0.8 Release Notes |publisher=Mozilla |accessdate=June 19, 2017}}</ref>
* Rebranded with new logo.
* Windows installer
* Download Manager
* New Add Bookmark Dialog
* Work Offline
* Better Handling of File Types
* New XPInstall Frontend
* New default theme for Mac&nbsp;OS&nbsp;X.
|-
| rowspan="18" style="vertical-align:top" | 1.7
| style="white-space:nowrap; background:pink;" | 0.9 RC
| Firefox 0.9 Release Candidate
| June 9, 2004
|
|-
| style="background:salmon;" | 0.9
| '']''
| June 15, 2004
| ''Technology Preview.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.9.html |title=Release Notes – Firefox 0.9 (One Tree Hill) |publisher=Mozilla |date=2004-06-15 |accessdate=June 19, 2017}}</ref>
* New default theme "Winstripe".
* Comprehensive Data Migration from Internet Explorer.
* Extension/Theme Manager
* Online help system
* Linux installer
|-
| style="background:salmon;" | 0.9.1
|
| June 28, 2004
| ''Bugfix release''
* Updated default theme<ref name="Mozilla Firefox 0.9 Release Notes">{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.9.1.html |title=Mozilla Firefox 0.9 Release Notes |publisher=Mozilla |date=2004-06-28 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 0.9.2
|
| July 8, 2004
| ''Vulnerability patch'' for Windows only.<ref name="Mozilla Firefox 0.9 Release Notes" />
|-
| style="background:salmon;" | 0.9.3
|
| August 4, 2004
| ''Vulnerability patch.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.9.3.html |title=Mozilla Firefox 0.9 Release Notes |publisher=Mozilla |date=2004-08-04 |accessdate=6 July 2011}}</ref>
|-
| style="background:salmon;" | 0.10
| ''Firefox 1.0 <br /> Preview Release <br /><small>"]"</small>''
| style="white-space:nowrap;" | September 14, 2004
| Bugs with higher complexity/risk, localization impact, ]/] feed support, find toolbar, plugin finder.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.10.html |title=Mozilla Firefox 0.10 (Preview Release) Release Notes |publisher=Mozilla |date=2004-09-14 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 0.10.1
|
| October 1, 2004
| ''Vulnerability patch.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/0.10.html |title=Mozilla Firefox 0.10.1 (Preview Release) Release Notes |publisher=Mozilla |date=2004-09-14 |accessdate=2011-07-06}}</ref>
|-
| style="vertical-align:top;" rowspan="11" | ''']'''
| style="vertical-align:top; white-space:nowrap; background:pink;" | 1.0 RC1
| ''Firefox 1.0 <br /> Release Candidate 1 <br /><small>"]"</small>''
| October 27, 2004
| ''First Firefox release candidate.''
|-
| style="white-space:nowrap; background:pink;" | 1.0 RC2
| ''Firefox 1.0 <br /> Release Candidate 2 <br /><small>"]"</small>''
| November 3, 2004
| ''Second Firefox release candidate.''
|-
| style="background:salmon;" | 1.0
| ''Firefox 1.0 <br /><small>"]"</small>''
| November 9, 2004
| ''Official version 1.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/releases/1.0.html |title=Mozilla Firefox 1.0 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* Better Tabbed Browsing Controls
* Official localized builds
|-
| style="background:salmon;" | 1.0.1
| ''Rose & Crown''
| February 24, 2005
| ''Regular security and stability update.''<ref>{{cite web|url=http://www.mozilla.com/en-US/firefox/releases/1.0.1.html |title=Mozilla Firefox 1.0.1 Release Notes |publisher=Mozilla |date=2005-02-24 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 1.0.2
|
| March 23, 2005
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.0.2.html |title=Mozilla Firefox 1.0.2 Release Notes |publisher=Mozilla |date=2005-03-23 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 1.0.3
|
| April 15, 2005
| ''Regular security and stability update.''
* Installer improvements.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.0.3.html |title=Mozilla Firefox 1.0.3 Release Notes |publisher=Mozilla |date=2005-04-15 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 1.0.4
|
| May 11, 2005
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.0.4.html |title=Mozilla Firefox 1.0.4 Release Notes |publisher=Mozilla |date=2005-05-11 |accessdate=2011-07-06}}</ref>
* Fix to DHTML errors encountered at some web sites.
|-
| style="background:salmon;" | 1.0.5
|
| July 12, 2005
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.0.5.html |title=Mozilla Firefox 1.0.5 Release Notes |publisher=Mozilla |date=2005-07-12 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 1.0.6
|
| July 19, 2005
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.0.6.html |title=Mozilla Firefox 1.0.6 Release Notes |publisher=Mozilla |date=2005-07-19 |accessdate=2011-07-06}}</ref>
* Restored API compatibility for extensions and web applications that did not work in Firefox 1.0.5.
|-
| style="background:salmon;" | 1.0.7
|
| September 20, 2005
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.0.7.html |title=Mozilla Firefox 1.0.7 Release Notes |publisher=Mozilla |date=2005-09-20 |accessdate=2011-07-06}}</ref>
|-
| style="background:salmon;" | 1.0.8
|
| April 13, 2006
|''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.0.8.html |title=Mozilla Firefox 1.0.8 Release Notes |publisher=Mozilla |date=2006-04-13 |accessdate=April 24, 2012}}</ref>
*Last release for Mac OS X 10.0–10.1
|-
| style="vertical-align:top; white-space:nowrap;" rowspan="20"| ''']'''
| style="vertical-align:top;" rowspan="20"| 1.8
| style="background:pink;" | 1.1a1
| ''Deer Park Alpha 1 <br /><small>"]"</small>''
| May 31, 2005
| ''First Firefox 1.1 alpha release.''
* Support for ] and ].
* "Sanitize" privacy feature.
* Improvements in JavaScript 1.5 and CSS 2/3.
* Broken website reporter tool.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/deerpark/releases/alpha1.html |title=Mozilla Deer Park Alpha 1 Release Notes |publisher=Mozilla |date=2005-05-31 |accessdate=6 July 2011}}</ref>
|-
| style="background:pink;" | 1.1a2
| ''Deer Park Alpha 2''
| July 12, 2005
| ''Second Firefox 1.1 alpha release.''
* Blazing fast backwards and forwards (FastBack), ] tab reordering, improved pop-up blocking, error pages instead of error dialogs.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/deerpark/releases/alpha2.html |title=Mozilla Deer Park Alpha 2 Release Notes |publisher=Mozilla |date=2005-07-12 |accessdate=2011-07-06}}</ref>
|-
| style="background:pink;" | 1.5b1
| ''Firefox 1.5 Beta 1''
| September 9, 2005
| ''First Firefox 1.5 beta release.''
* New update system (binary patch). Prettier error pages, more Luna-like Winstripe theme (did not blend well with the Classic theme).<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5beta1.html |title=Mozilla Firefox 1.5 Beta 1 Release Notes |publisher=Mozilla |date=2005-09-09 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 1.5b2
| ''Firefox 1.5 Beta 2''
| October 6, 2005
| ''Second Firefox 1.5 beta release.''
* Improvements to automated update system, website rendering and performance. Several security fixes.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5beta2.html |title=Mozilla Firefox 1.5 Beta 2 Release Notes |publisher=Mozilla |date=2005-10-06 |accessdate=2011-07-10}}</ref>
|-
| style="white-space:nowrap; background:pink;" | 1.5 RC1
| ''Firefox 1.5 <br /> Release Candidate 1''
| November 1, 2005
| ''First Firefox 1.5 release candidate.''
|-
| style="white-space:nowrap; background:pink;" | 1.5 RC2
| ''Firefox 1.5 <br /> Release Candidate 2''
| November 10, 2005
| ''Second Firefox 1.5 release candidate.''
|-
| style="white-space:nowrap; background:pink;" | 1.5 RC3
| ''Firefox 1.5 <br /> Release Candidate 3''
| November 17, 2005
| ''Third Firefox 1.5 release candidate.''
|-
| style="background:salmon;" | 1.5
| ''Firefox 1.5 <br /><small>"]"</small>''
| November 29, 2005
| ''Official version 1.5 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/releases/1.5.html |title=Mozilla Firefox 1.5 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
''Official localized builds.''
* Private data clear data
* Back and forward now fast
* Improved web standards
** Improved ]
** Improved ]
** Improved ]
** Improved ]/]
** ] compatibility
|-
| style="background:salmon;" | 1.5.0.1
|
| February 1, 2006
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.1.html |title=Mozilla Firefox 1.5.0.1 Release Notes |publisher=Mozilla |date=2006-02-01 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 1.5.0.2
|
| April 13, 2006
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.2.html |title=Mozilla Firefox 1.5.0.2 Release Notes |publisher=Mozilla |date=2006-04-13 |accessdate=2011-07-10}}</ref>
* Native support for Intel-based Macintosh computers by shipping ].
|-
| style="background:salmon;" | 1.5.0.3
|
| May 2, 2006
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.3.html |title=Mozilla Firefox 1.5.0.3 Release Notes |publisher=Mozilla |date=2006-05-02 |accessdate=2011-07-10}}</ref>
* Fix for a .
|-
| style="background:salmon;" | 1.5.0.4
|
| June 1, 2006
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.4.html |title=Mozilla Firefox 1.5.0.4 Release Notes |publisher=Mozilla |date=2006-06-01 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 1.5.0.5
|
| July 26, 2006
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.5.html |title=Mozilla Firefox 1.5.0.5 Release Notes |publisher=Mozilla |date=2006-07-27 |accessdate=2011-07-10}}</ref>
* Added changes for Frisian locale (fy-NL).
|-
| style="background:salmon;" | 1.5.0.6
|
| August 2, 2006
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.6.html |title=Mozilla Firefox 1.5.0.6 Release Notes |publisher=Mozilla |date=2006-08-02 |accessdate=2011-07-10}}</ref>
* Fixed an issue with playing Windows Media content introduced by previous update.
|-
| style="background:salmon;" | 1.5.0.7
|
| September 14, 2006
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.7.html |title=Mozilla Firefox 1.5.0.7 Release Notes |publisher=Mozilla |date=2006-09-14 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 1.5.0.8
|
| November 7, 2006
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.8.html |title=Mozilla Firefox 1.5.0.8 Release Notes |publisher=Mozilla |date=2006-11-07 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 1.5.0.9
|
| December 19, 2006
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.9.html |title=Mozilla Firefox 1.5.0.9 Release Notes |publisher=Mozilla |date=2006-12-19 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 1.5.0.10
|
| February 23, 2007
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.10.html |title=Mozilla Firefox 1.5.0.9 Release Notes |publisher=Mozilla |date=2007-02-23 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 1.5.0.11
|
| March 20, 2007
| ''Regular security and stability update.'' Regression fixes.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/releases/1.5.0.11.html |title=Mozilla Firefox 1.5.0.9 Release Notes |publisher=Mozilla |date=2007-03-20 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 1.5.0.12
|
| May 30, 2007
| ''Regular security and stability update.'' <ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/releases/1.5.0.12.html |title=Mozilla Firefox 1.5.0.12 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
*Last release for Windows 95
|-
| style="vertical-align:top;" rowspan="29" | ''']'''
| style="vertical-align:top;" rowspan="29" | 1.8.1
| style="background:pink;" | 2.0a1
| ''Bon Echo Alpha 1''
| March 22, 2006
| ''First Firefox 2.0 alpha release.''<ref>{{cite web|url=https://www-archive.mozilla.org/projects/bonecho/releases/2.0a1.html |title=Mozilla Bon Echo Alpha 1 Release Notes |publisher=Mozilla |date=22 March 2006 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 2.0a2
| ''Bon Echo Alpha 2''
| May 12, 2006
| ''Second Firefox 2.0 alpha release.''
* Links default to open in new tab.
* Close button on every tab.
* Inline ] for text boxes.
* Session restoration after browser crash.
* Search suggestion for Google and Yahoo!.
* New search plugin manager and add-on manager.
* Web feed previewing.
* Bookmark ].
* Updates to extension system. Support for ] and ].
* Support for SVG text using svg:textPath.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/bonecho/releases/2.0a2.html |title=Mozilla Bon Echo Alpha 2 Release Notes |publisher=Mozilla |date=2006-05-12 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 2.0a3
| ''Bon Echo Alpha 3''
| May 26, 2006
| ''Third Firefox 2.0 alpha release.'' Anti-] protection. Search suggestions appear with search history in the search box for Google and Yahoo!. Support for client-side session and persistent storage.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/bonecho/releases/2.0a3.html |title=Mozilla Bon Echo Alpha 3 Release Notes |publisher=Mozilla |date=2006-05-26 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 2.0b1
| ''Firefox 2.0 Beta 1''
| July 12, 2006
| ''First Firefox 2.0 beta release.'' Improved feed support. New ]-based installer. JavaScript 1.7. Enhanced security and localization support for extensions.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/bonecho/releases/2.0b1.html |title=Mozilla Firefox 2.0 Beta 1 Release Notes |publisher=Mozilla |date=2006-07-12 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 2.0b2
| ''Firefox 2.0 Beta 2''
| August 31, 2006
| ''Second Firefox 2.0 beta release.'' New Winstripe theme refresh: new navigation icons, URL bar refresh (new Go button attached to the URL bar), Search bar refresh, Tab bar refresh, Alltabs button (used to view a popup list of all tabs open).<ref>{{cite web|url=https://www-archive.mozilla.org/projects/bonecho/releases/2.0b2.html |title=Mozilla Firefox 2.0 Beta 2 Release Notes |publisher=Mozilla |date=31 August 2006 |accessdate=2011-07-10}}</ref>
|-
| style="white-space:nowrap; background:pink;" | 2.0 RC1
| ''Firefox 2.0 <br /> Release Candidate 1''
| September 26, 2006
| ''First Firefox 2.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0rc1/releasenotes/ |title=Mozilla Firefox 2.0 Release Candidate 1 Release Notes |publisher=Mozilla |date=2006-09-26 |accessdate=2011-07-10}}</ref>
|-
| style="white-space:nowrap; background:pink;" | 2.0 RC2
| ''Firefox 2.0 <br /> Release Candidate 2''
| October 6, 2006
| ''Second Firefox 2.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0rc2/releasenotes/ |title=Mozilla Firefox 2.0 Release Candidate 2 Release Notes |publisher=Mozilla |date=2006-10-06 |accessdate=2011-07-10}}</ref>
|-
| style="white-space:nowrap; background:pink;" | 2.0 RC3
| ''Firefox 2.0 <br /> Release Candidate 3''
| October 16, 2006
| ''Third Firefox 2.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0rc3/releasenotes/ |title=Mozilla Firefox 2.0 Release Candidate 3 Release Notes |publisher=Mozilla |date=2006-10-16 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0
| ''Firefox 2.0 <br /><small>"]"</small>''
| October 24, 2006
| ''Official version 2.0 release''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/2.0/releasenotes/ |title=Mozilla Firefox 2.0 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* Official localized builds.
* Visual Refresh of main theme
* Built-in phishing protection
* Enhanced search capabilities
* Improved tabbed browsing
* Resuming your browsing session (session restore)
* Previewing and subscribing to Web feeds
* Inline spell checking
* Live Web Titles
* Improved Add-ons manager
* JavaScript 1.7
* Extended search plugin format (predictive search)
* Improved security with extension system
* Client-side session and persistent storage
* SVG text support
* New Windows installer
|-
| style="background:salmon;" | 2.0.0.1
|
| December 19, 2006
| ''Regular security and stability update.'' ] support.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.1/releasenotes/ |title=Mozilla Firefox 2.0.0.1 Release Notes |publisher=Mozilla |date=2006-12-19 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.2
|
| February 23, 2007
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.2/releasenotes/ |title=Mozilla Firefox 2.0.0.2 Release Notes |publisher=Mozilla |date=2007-02-23 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.3
|
| March 20, 2007
| ''Regular security and stability update.'' Regression fixes and security fixes.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.3/releasenotes/ |title=Mozilla Firefox 2.0.0.3 Release Notes |publisher=Mozilla |date=2007-03-20 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.4
|
| May 30, 2007
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.4/releasenotes/ |title=Mozilla Firefox 2.0.0.4 Release Notes |publisher=Mozilla |date=2007-05-30 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.5
|
| July 17, 2007
| Security and stability update.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.5/releasenotes/ |title=Mozilla Firefox 2.0.0.5 Release Notes |publisher=Mozilla |date=2007-07-17 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.6
|
| July 30, 2007
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.6/releasenotes/ |title=Mozilla Firefox 2.0.0.6 Release Notes |publisher=Mozilla |date=2007-07-30 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.7
|
| September 18, 2007
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.7/releasenotes/ |title=Mozilla Firefox 2.0.0.7 Release Notes |publisher=Mozilla |date=2007-09-18 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.8
|
| October 18, 2007
| ''Regular security and stability update.'' ] support.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.8/releasenotes/ |title=Mozilla Firefox 2.0.0.8 Release Notes |publisher=Mozilla |date=2007-10-18 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.9
|
| November 1, 2007
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.9/releasenotes/ |title=Mozilla Firefox 2.0.0.9 Release Notes |publisher=Mozilla |date=2007-11-01 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.10
|
| November 26, 2007
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.10/releasenotes/ |title=Mozilla Firefox 2.0.0.10 Release Notes |publisher=Mozilla |date=26 November 2007 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.11
|
| November 30, 2007
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.11/releasenotes/ |title=Mozilla Firefox 2.0.0.11 Release Notes |publisher=Mozilla |date=2007-11-30 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.12
|
| February 7, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.12/releasenotes/ |title=Mozilla Firefox 2.0.0.12 Release Notes |publisher=Mozilla |date=2008-02-07 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.13
|
| March 25, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.13/releasenotes/ |title=Mozilla Firefox 2.0.0.13 Release Notes |publisher=Mozilla |date=2008-03-25 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.14
|
| April 16, 2008
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.14/releasenotes/ |title=Mozilla Firefox 2.0.0.14 Release Notes |publisher=Mozilla |date=2008-04-16 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.15
|
| July 1, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.15/releasenotes/ |title=Mozilla Firefox 2.0.0.15 Release Notes |publisher=Mozilla |date=2008-07-01 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.16
|
| July 15, 2008
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.16/releasenotes/ |title=Mozilla Firefox 2.0.0.16 Release Notes |publisher=Mozilla |date=2008-07-15 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.17
|
| September 23, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.17/releasenotes/ |title=Mozilla Firefox 2.0.0.17 Release Notes |publisher=Mozilla |date=2008-09-23 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.18
|
| November 12, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.18/releasenotes/ |title=Mozilla Firefox 2.0.0.18 Release Notes |publisher=Mozilla |date=2008-11-12 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 2.0.0.19
|
| December 16, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.19/releasenotes/ |title=Mozilla Firefox 2.0.0.19 Release Notes |publisher=Mozilla |date=2008-12-16 |accessdate=2011-07-10}}</ref>
|-


Firefox 12 was released on April 24, 2012. Firefox 12 introduced few new features, but it made many changes and laid the ground work for future releases. Firefox 12 for Windows added the Mozilla Maintenance Service which can update Firefox to a newer version without a ] prompt.<ref>{{cite web |url=https://support.mozilla.org/en-US/kb/what-mozilla-maintenance-service |title=What is the Mozilla Maintenance Service? |publisher=Mozilla Foundation |access-date=October 4, 2012 |archive-date=September 30, 2019 |archive-url=https://web.archive.org/web/20190930050507/https://support.mozilla.org/en-US/kb/what-mozilla-maintenance-service |url-status=live }}</ref> It also added line numbers in the "Page Source" and centered find in page results. There were 89 improvements to Web Console, Scratchpad, Style Editor, Page Inspector, Style Inspector, HTML view and Page Inspector 3D view (Tilt).<ref>{{cite web |url=https://hacks.mozilla.org/2012/02/aurora-12-is-out-improvements-and-updated-developer-tools/ |title=Aurora 12 is out – improvements and updated Developer Tools |website=Mozilla |access-date=May 10, 2012 |date=February 3, 2012 |archive-date=May 10, 2012 |archive-url=https://web.archive.org/web/20120510034037/https://hacks.mozilla.org/2012/02/aurora-12-is-out-improvements-and-updated-developer-tools/ |url-status=live }}</ref> Many bugs were fixed, as well as many other minor under-the-hood changes.<ref name="fx12plan">{{cite web |url=https://wiki.mozilla.org/Releases/Firefox_12/Test_Plan |title=Mozilla Firefox 12 test plan |publisher=Mozilla |access-date=March 13, 2012 |archive-date=May 6, 2012 |archive-url=https://web.archive.org/web/20120506003808/https://wiki.mozilla.org/Releases/Firefox_12/Test_Plan |url-status=live }}</ref><ref name="Firefox 12.0">{{cite web |title=Firefox 12 Release Notes |publisher=Mozilla |url=https://www.mozilla.org/en-US/firefox/12.0/releasenotes |access-date=March 13, 2012 |archive-date=March 21, 2012 |archive-url=https://web.archive.org/web/20120321010936/http://www.mozilla.org/en-US/firefox/12.0/releasenotes/ |url-status=live }}</ref> Firefox 12 is the final release to support ] and ].<ref name="Neowin">{{cite web |title=Firefox 3.6 official support to end Tuesday |website=] |url=https://www.neowin.net/news/firefox-36-official-support-to-end-tuesday/ |access-date=April 22, 2012 |archive-date=April 23, 2012 |archive-url=https://web.archive.org/web/20120423124333/http://www.neowin.net/news/firefox-36-official-support-to-end-tuesday |url-status=live }}</ref><ref>{{cite news |title=End of Firefox Support for Windows 2000 |website=MozillaZine Weblogs |date=January 27, 2012 |url=http://weblogs.mozillazine.org/asa/archives/2012/01/end_of_firefox_win2k.html |access-date=January 27, 2012 |archive-date=September 4, 2014 |archive-url=https://web.archive.org/web/20140904181621/http://weblogs.mozillazine.org/asa/archives/2012/01/end_of_firefox_win2k.html |url-status=dead }}</ref>
| style="background:salmon;" | 2.0.0.20
|
| December 18, 2008
|''Off-cycle security update.''<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/2.0.0.20/releasenotes/ |title=Mozilla Firefox 2.0.0.20 Release Notes |publisher=Mozilla |accessdate=April 24, 2012}}</ref>
* ''Last release for Windows NT 4.0, Windows 9x, Mac OS X 10.2–10.3''
* Bug fixes
* Fixed security and stability issues.
|-


Firefox 13 was released on June 5, 2012.<ref name="Firefox 13.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/13.0/releasenotes/ |title=Mozilla Firefox 13 Release Notes |website=Mozilla |date=2012-06-05 |access-date=2012-06-06 |archive-date=July 12, 2014 |archive-url=https://web.archive.org/web/20140712002034/http://www.mozilla.org/en-US/firefox/13.0/releasenotes/ |url-status=live }}</ref> Starting with this version, Windows support was exclusively for Windows XP SP2/SP3, Windows Vista, and Windows 7. Firefox 13 adds and updates several features, such as an updated new tab<ref name="mozilla4">{{cite web |url=https://wiki.mozilla.org/Firefox/Features/New_Tab_Page |title=New Tab Page |publisher=Mozilla |access-date=March 13, 2012 |archive-date=October 6, 2019 |archive-url=https://web.archive.org/web/20191006014138/https://wiki.mozilla.org/Firefox/Features/New_Tab_Page |url-status=live }}</ref> and home tab page.<ref>{{cite web |url=https://wiki.mozilla.org/Features/Desktop/Firefox_Home_Tab |title=Home Tab |publisher=Mozilla |access-date=March 13, 2012 |archive-date=October 5, 2019 |archive-url=https://web.archive.org/web/20191005082423/https://wiki.mozilla.org/Features/Desktop/Firefox_Home_Tab |url-status=live }}</ref> The updated new tab page is a feature similar to the ] already present in ], ], ], and ]. The new tab page will display nine of the user's most visited websites, along with a ] image. In addition to the updated new tab and home tab page, Mozilla has added a user profile cleaner/reset, reduced hang times, and implemented tabs on demand.<ref name="Test Plan Firefox 13">{{cite web |url=https://wiki.mozilla.org/index.php?title=Releases/Firefox_13/Test_Plan |title=Test Plan Firefox 13 |publisher=Mozilla |access-date=March 13, 2012 |archive-date=April 20, 2014 |archive-url=https://web.archive.org/web/20140420205424/https://wiki.mozilla.org/index.php?title=Releases/Firefox_13/Test_Plan |url-status=live }}</ref> The user profile cleaner/reset provides a way for users to fix Firefox errors and glitches that may occur.<ref>{{cite web |url=https://wiki.mozilla.org/Support/Firefox_Features/Clean_up_user_profile |title=User profile reset/cleaner |publisher=Mozilla |access-date=March 13, 2012 |archive-date=May 1, 2012 |archive-url=https://web.archive.org/web/20120501110401/https://wiki.mozilla.org/Support/Firefox_Features/Clean_up_user_profile |url-status=live }}</ref> Mozilla's tabs on demand restores tabs that were open in the previous session, but will keep the tabs unloaded until the user requests to view the page.<ref>{{cite web |url=https://wiki.mozilla.org/Tab_on_demand |title=Tabs on Demand |publisher=Mozilla |access-date=March 13, 2012 |archive-date=May 4, 2012 |archive-url=https://web.archive.org/web/20120504210430/https://wiki.mozilla.org/Tab_on_demand |url-status=live }}</ref>
| style="vertical-align:top;" rowspan="36" | ''']'''
| style="vertical-align:top;" rowspan="36" | 1.9
| style="background:pink;" | 3.0a1
| ''Gran Paradiso Alpha 1''
| December 8, 2006
| ''First Firefox 3.0 alpha release.'' ] graphics library. ] Widgets in OS X builds. Updated threading model. Changes to how ] are dispatched, how HTML object elements are loaded, and how web pages are painted. New SVG elements and filters, and improved SVG specification compliance. ], ], ] and ] no longer supported. Moving DOM nodes between documents require a call to importNode or adoptNode as per the DOM specification.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a1/releasenotes/ |title=Mozilla Gran Paradiso Alpha 1 Release Notes |publisher=Mozilla |date=2006-12-08 |accessdate=2011-07-10}}</ref>
|-


Firefox 14 was released on June 26, 2012, for mobile devices only, just outside the regular release schedule of the web browser.<ref name=ghacks-no14>{{cite web |url=https://www.ghacks.net/2012/07/17/firefox-14-0-1-available-why-there-wont-be-a-firefox-14-0-release/ |title=Firefox 14.0.1 available, Why there won't be a Firefox 14.0 release |last=Brinkmann |first=Martin |website=] |date=July 17, 2012 |access-date=July 17, 2012 |archive-date=July 18, 2012 |archive-url=https://web.archive.org/web/20120718194258/http://www.ghacks.net/2012/07/17/firefox-14-0-1-available-why-there-wont-be-a-firefox-14-0-release/ |url-status=live }}</ref> In order to sync the version numbers of the desktop and mobile versions of Firefox, Mozilla decided to release version 14.0.1 for both mobile and desktop on July 17, 2012, instead of Firefox 14 version 14.0 for the desktop and version 14.0.1 for mobile devices.<ref name=ghacks-no14/>
| style="background:pink;" | 3.0a2
| ''Gran Paradiso Alpha 2''
| February 7, 2007
| ''Second Firefox 3.0 alpha release.'' Reflow refactoring (leading to ] test compliance) among numerous layout bug fixes. Web Apps 1.0 API for changing stylesheets support. Inline-block and inline-table values of CSS 2.1's display property implemented. XML documents can be rendered during download. Greatly improved Mac widgets support since Alpha 1. Improvements in Cairo graphics layer. Non-standard JavaScript "Script" object no longer supported.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a2/releasenotes/ |title=Mozilla Gran Paradiso Alpha 2 Release Notes |publisher=Mozilla |date=2007-02-07 |accessdate=2011-07-06}}</ref>
|-


Firefox 14 introduces a new hang detector (similar to how Mozilla currently collects other data) that allows Mozilla to collect, analyze, and identify the cause of the browser freezing/hanging. Mozilla uses this information to improve the responsiveness of Firefox for future releases.<ref>{{cite web |url=https://wiki.mozilla.org/Hang_Detector_and_Reporter: |title=Hang detector and reporter |publisher=Mozilla |access-date=March 13, 2012 |archive-date=May 4, 2012 |archive-url=https://web.archive.org/web/20120504210543/https://wiki.mozilla.org/Hang_Detector_and_Reporter: |url-status=live }}</ref> In addition to tackling freezing and not-responding errors that occur because of Firefox, Mozilla implemented opt-in activation for plugins such as ] and ]. Mozilla wants to reduce potential problems that could arise through the unwanted use of third-party applications (], freezing, etc.).<ref>{{cite web |url=https://wiki.mozilla.org/Opt-in_activation_for_plugins |title=Opt-in activation for plugins |publisher=Mozilla |access-date=March 15, 2012 |archive-date=April 13, 2012 |archive-url=https://web.archive.org/web/20120413173755/https://wiki.mozilla.org/Opt-in_activation_for_plugins |url-status=live }}</ref>
| style="background:pink;" | 3.0a3
| ''Gran Paradiso Alpha 3''
| March 23, 2007
| ''Third Firefox 3.0 alpha release.'' Support for allowing web pages to store resources in the browser's offline cache. Support for ] images. Support for the "HTTPOnly" cookie extension which provides enhanced cookie privacy (also ] to Firefox 2.0.0.5). Improvements to layout and scaling precision across numerous screen and printer resolutions.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a3/releasenotes/ |title=Mozilla Gran Paradiso Alpha 3 Release Notes |publisher=Mozilla |date=2007-03-23 |accessdate=2011-07-06}}</ref>
|-
| style="background:pink;" | 3.0a4
| ''Gran Paradiso Alpha 4''
| April 27, 2007
| ''Fourth Firefox 3.0 alpha release.'' Adding of FUEL JavaScript library for extension developers. Rewrite of Page Info dialog. Upgrade to Cairo 1.4.2. More Cocoa regression fixes.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a4/releasenotes/ |title=Mozilla Gran Paradiso Alpha 4 Release Notes |publisher=Mozilla |date=2007-04-27 |accessdate=2011-07-06}}</ref>
|-
| style="background:pink;" | 3.0a5
| ''Gran Paradiso Alpha 5''
| June 6, 2007
| ''Fifth Firefox 3.0 alpha release.'' Places (bookmark and history service based on ]) used by default, but no front-end changes. Breakpad used as crash reporter on Windows and Mac OS X, superseding closed-source Talkback. Password manager rewrite. Support for ] and native widgets within forms for Mac OS X.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a5/releasenotes/ |title=Mozilla Gran Paradiso Alpha 5 Release Notes |publisher=Mozilla |date=2007-06-06 |accessdate=2011-07-06}}</ref>
|-
| style="background:pink;" | 3.0a6
| ''Gran Paradiso Alpha 6''
| July 2, 2007
| ''Sixth Firefox 3.0 alpha release.'' Upgrade of SQLite to version 3.3.17, leading to increased ] performance due to transition of cookie service to SQLite. Site-specific preference service, used initially for text zoom, allowing zoom setting to remain on each website. Support for native widgets within forms for Linux. New Quit dialog handles multiple windows more elegantly and allows users to save session. Autoscroll rewrite: numerous bug fixes and significant performance gain. Fixes to the use of units within the download manager. Various Places bug fixes.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a6/releasenotes/ |title=Mozilla Gran Paradiso Alpha 6 Release Notes |publisher=Mozilla |date=2007-07-02 |accessdate=2011-07-06}}</ref>
|-
| style="background:pink;" | 3.0a7
| ''Gran Paradiso Alpha 7''
| August 3, 2007
| ''Seventh Firefox 3.0 alpha release.'' More APIs implemented from ] specs, such as ability to read files from file selection fields without need to upload and cut/copy/paste events, and cross-site ]. New protocol-handling dialog. Experimental full-page zoom support, but no UI to control it. Numerous Mac OS X bug fixes, but Mac OS X 10.3 no longer supported for Gecko 1.9. General bug fixes.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a7/releasenotes/ |title=Mozilla Gran Paradiso Alpha 7 Release Notes |publisher=Mozilla |date=2007-08-03 |accessdate=2011-07-06}}</ref>
|-
| style="background:pink;" | 3.0a8
| ''Gran Paradiso Alpha 8''
| September 20, 2007
| ''Eighth Firefox 3.0 alpha release.'' New, basic UI for tagging bookmarks. Remember password prompt changed to non-modal information bar. Malware blacklist support. New UI for FTP and File protocol listings. Applications pane added to preferences. Basic support for web-based protocol handlers.<ref>{{cite web|url=https://www-archive.mozilla.org/projects/firefox/3.0a8/releasenotes/ |title=Mozilla Gran Paradiso Alpha 8 Release Notes |publisher=Mozilla |date=2007-09-20 |accessdate=2011-07-06}}</ref>
|-
| style="background:pink;" | 3.0b1
| ''Firefox 3.0 Beta 1''
| November 19, 2007
| ''First Firefox 3.0 beta release.''<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2007/11/19/firefox-3-beta-1-now-available-for-download/ |title=Mozilla Firefox 3.0 Beta 1 Release Announcement |publisher=Mozilla Developer News |date=2007-11-19 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 3.0b2
| ''Firefox 3.0 Beta 2''
| December 18, 2007
| ''Second Firefox 3.0 beta release.'' New UI improvements, including redesigned location bar, Places Organizer, Smart Bookmarks. Various stability and performance improvements.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2007/12/18/firefox-3-beta-2-now-available-for-download/ |title=Mozilla Firefox 3.0 Beta 2 Release Announcement |publisher=Mozilla Developer News |date=2007-12-18 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 3.0b3
| ''Firefox 3.0 Beta 3''
| February 12, 2008
| ''Third Firefox 3.0 beta release.'' New UI improvements, including redesigned buttons and location bar. Different default native themes for each operating system. Upgraded to SQLite 3.5.4. Various stability and performance improvements.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2008/02/12/firefox-3-beta-3-now-available-for-download/ |title=Mozilla Firefox 3.0 Beta 3 Release Announcement |publisher=Mozilla Developer News |date=2008-02-12 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 3.0b4
| ''Firefox 3.0 Beta 4''
| March 10, 2008
| ''Fourth Firefox 3.0 beta release.'' New UI improvement, including improved default themes for different operating systems. Various improvements in speed and resource usage.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2008/03/10/firefox-3-beta-4-now-available-for-download/ |title=Mozilla Firefox 3.0 Beta 4 Release Announcement |publisher=Mozilla Developer News |date=2008-03-10 |accessdate=2011-07-10}}</ref>
|-
| style="background:pink;" | 3.0b5
| ''Firefox 3.0 Beta 5''
| April 2, 2008
| ''Fifth Firefox 3.0 beta release.'' Further improved themes to match various operating systems, JavaScript engine optimizations for speed, improved Places organizer.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2008/04/02/firefox-3-beta-5-now-available-for-download/ |title=Mozilla Firefox 3.0 Beta 5 Release Announcement |publisher=Mozilla Developer News |date=2008-04-02 |accessdate=2011-07-10}}</ref>
|-
| style="white-space:nowrap; background:pink;" | 3.0 RC1
| ''Firefox 3.0 <br /> Release Candidate 1''
| May 16, 2008
| ''First Firefox 3.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0rc1/releasenotes/ |title=Mozilla Firefox 3.0 Release Candidate 1 Release Notes |publisher=Mozilla |date=2008-05-16 |accessdate=2011-07-10}}</ref>
|-
| style="white-space:nowrap; background:pink;" | 3.0 RC2
| ''Firefox 3.0 <br /> Release Candidate 2''
| June 5, 2008
| ''Second Firefox 3.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0rc2/releasenotes/ |title=Mozilla Firefox 3.0 Release Candidate 2 Release Notes |publisher=Mozilla |date=2008-06-05 |accessdate=2011-07-10}}</ref>
|-
| style="white-space:nowrap; background:pink;" | 3.0 RC3
| ''Firefox 3.0 <br /> Release Candidate 3''
| June 11, 2008
| ''Third Firefox 3.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0rc3/releasenotes/ |title=Mozilla Firefox 3.0 Release Candidate 3 Release Notes |publisher=Mozilla |date=2008-06-11 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0
| ''Firefox 3.0 <br /><small>"]"</small>''
| June 17, 2008
| ''Official version 3.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0/releasenotes/ |title=Mozilla Firefox 3.0 Release Notes |publisher=Mozilla |date=2008-06-17 |accessdate=April 22, 2012}}</ref>
* One-click site info
* Malware Protection
* New Web Forgery Protection page
* New SSL error pages
* Add-ons and Plugin version check
* Secure add-on updates
* Anti-virus integration with download manager
* Vista Parental Controls
* Effective top-level domain (eTLD) service better restricts cookies and other restricted content to a single domain.
* Better protection against cross-site JSON data leaks.
* Easier password management – save passwords after successful login
* Simplified add-on installation from third party’s
* New Download Manager
* Resumable downloading after closing the browser
* Full page zoom
* Podcasts and Videocasts can be associated with your media playback tools
* Tab scrolling and quickmenu
* Save what you were doing – Firefox 3 will prompt users to save tabs on exit.
* Optimized Open in Tabs behavior
* Location and Search bar size can now be customized with a simple resizer item.
* Text selection improvements (select multiple selections of text)
* Find toolbar: the Find toolbar now opens with the current selection.
* Plugin management with the add-on manager
* Improved integration with Windows
* Improved integration with the Mac
* Integration with Linux GTK theme
* Bookmark star button
* Bookmark tags
* Smart Location Bar
* Library of bookmarks, history, etc.
* Smart Bookmark Folders
* Web-based protocol handlers for mail:to
* Download & Install Add-ons from the Add-on manager
* Easy to use Download Actions
* New graphics and font handling in Gecko 1.9 provide rendering improvements in:
:* CSS
:* SVG
:* Display of fonts with ] and complex scripts
* Color management of images with capabilities
* Offline support for web applications
* Improved speed
* Reduced memory usage
* Increased reliability
* 25000 total code changes
* Security fixes
* Stability fixes


Firefox 15 was released on August 28, 2012, with a "]" developer tool,<ref>{{cite web |url=https://hacks.mozilla.org/2012/07/debugger-responsive-design-view-and-more-in-firefox-aurora-15/ |title=Debugger, Responsive Design View and more in Firefox Aurora 15 |publisher=Mozilla |access-date=July 20, 2012 |archive-date=January 17, 2019 |archive-url=https://web.archive.org/web/20190117054448/https://hacks.mozilla.org/2012/07/debugger-responsive-design-view-and-more-in-firefox-aurora-15/ |url-status=live }}</ref> adds support for the ], and adds preliminary native ] support (disabled by default).<ref name="Firefox 15.0">{{cite web |title=Firefox Notes – Desktop: Firefox 15.0 release notes |website=Mozilla |date=August 28, 2012 |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/15.0/releasenotes/ |access-date=October 1, 2012 |archive-date=July 6, 2014 |archive-url=https://web.archive.org/web/20140706132255/http://www.mozilla.org/en-US/firefox/15.0/releasenotes/ |url-status=live }}</ref>
|-
| style="background:salmon;" | 3.0.1
|
| July 16, 2008
| ''Security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.1/releasenotes/ |title=Mozilla Firefox 3.0.1 Release Notes |publisher=Mozilla |date=2008-07-16 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.2
|
| September 23, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.2/releasenotes/ |title=Mozilla Firefox 3.0.2 Release Notes |publisher=Mozilla |date=2008-09-23 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.3
|
| September 26, 2008
| Bug fix for retrieving and saving passwords.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.3/releasenotes/ |title=Mozilla Firefox 3.0.3 Release Notes |publisher=Mozilla |date=2008-09-26 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.4
|
| November 12, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.4/releasenotes/ |title=Mozilla Firefox 3.0.4 Release Notes |publisher=Mozilla |date=2008-11-12 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.5
|
| December 16, 2008
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.5/releasenotes/ |title=Mozilla Firefox 3.0.5 Release Notes |publisher=Mozilla |date=2008-12-16 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.6
|
| February 3, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.6/releasenotes/ |title=Mozilla Firefox 3.0.6 Release Notes |publisher=Mozilla |date=2009-02-03 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.7
|
| March 4, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.7/releasenotes/ |title=Mozilla Firefox 3.0.7 Release Notes |publisher=Mozilla |date=2009-03-04 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.8
|
| March 27, 2009
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.8/releasenotes/ |title=Mozilla Firefox 3.0.8 Release Notes |publisher=Mozilla |date=2009-03-27 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.9
|
| April 21, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.9/releasenotes/ |title=Mozilla Firefox 3.0.9 Release Notes |publisher=Mozilla |date=2009-04-21 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.10
|
| April 27, 2009
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.10/releasenotes/ |title=Mozilla Firefox 3.0.10 Release Notes |publisher=Mozilla |date=2009-04-27 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.0.11
|
| June 11, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.11/releasenotes/ |title=Mozilla Firefox 3.0.11 Release Notes |publisher=Mozilla |date=2009-06-11 |accessdate=2011-07-10}}</ref>
|-


Firefox 15 introduced silent updates, an automatic update that will update Firefox to the latest version without notifying the user,<ref>{{cite web |title=Silent Updater |website=Mozilla Wiki |publisher=Mozilla |url=https://wiki.mozilla.org/Silent_Update_updater |access-date=March 13, 2012 |archive-date=October 9, 2019 |archive-url=https://web.archive.org/web/20191009000512/https://wiki.mozilla.org/Silent_Update_updater |url-status=live }}</ref> a feature that the web browsers ] and ] and above have already implemented,<ref>{{cite web |last1=Duebendorfer1 |first1=Thomas |last2=Frei |first2=Stefan |title=Why Silent Updates Boost Security |website=techzoom.net |date=April 2009 |url=https://techzoom.net/static/papers/why_silent_updates_boost_security_2009.pdf |url-status=live |archive-url=https://web.archive.org/web/20120501122450/http://www.techzoom.net/publications/silent-updates/ |archive-date=May 1, 2012}}</ref><ref>{{cite news |last=Bright |first=Peter |title=State of the Browser: Chrome closes on Firefox, IE6 dying out |website=Ars Technica |date=2012-01-04 |url=https://arstechnica.com/business/news/2012/01/state-of-the-browser-chrome-closes-on-firefox-ie6-dying-out.ars |access-date=2013-11-19 |archive-date=May 4, 2012 |archive-url=https://web.archive.org/web/20120504111446/http://arstechnica.com/business/news/2012/01/state-of-the-browser-chrome-closes-on-firefox-ie6-dying-out.ars |url-status=live }}</ref> although the user was able to disable that function.<ref>{{cite web |last=Keizer |first=Gregg |title=Mozilla aims to add silent updating to Firefox 10 |website=Computerworld |url=http://www.computerworld.com/s/article/print/9220513/Mozilla_aims_to_add_silent_updating_to_Firefox_10 |access-date=March 17, 2012 |url-status=dead |archive-url=https://archive.today/20130102175309/http://www.computerworld.com/s/article/print/9220513/Mozilla_aims_to_add_silent_updating_to_Firefox_10 |archive-date=January 2, 2013}}</ref> The startup time in Firefox 15 was improved for Windows users.<ref>{{cite web |url=https://wiki.mozilla.org/Start-up_Performance_Improvements |title=Start-up Performance Improvements |publisher=Mozilla |access-date=April 26, 2012 |archive-date=October 10, 2019 |archive-url=https://web.archive.org/web/20191010022605/https://wiki.mozilla.org/Start-up_Performance_Improvements |url-status=live }}</ref>
| style="background:salmon;" | 3.0.12
|
| July 21, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.12/releasenotes/ |title=Mozilla Firefox 3.0.12 Release Notes |publisher=Mozilla |date=2009-07-21 |accessdate=2011-07-10}}</ref>
|-


Firefox 16 was released on October 9, 2012, fixing outstanding bugs of the new features in ]. There were improvements made to startup speed when a user wants to restore a previous session.<ref>{{cite web |title=Speedy Session Restore |website=Mozilla Wiki |publisher=Mozilla |url=https://wiki.mozilla.org/Speedy_Session_Restore |access-date=April 21, 2012 |archive-date=October 10, 2019 |archive-url=https://web.archive.org/web/20191010022607/https://wiki.mozilla.org/Speedy_Session_Restore |url-status=live }}</ref> Support for viewing ] files inline was added in placement of a plugin. Support for web apps was added. ] audio format is now enabled by default.<ref name="Firefox 16.0">{{cite web |title=Firefox Notes – Desktop: Firefox 16.0 release notes |website=Mozilla |date=October 9, 2012 |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-us/firefox/16.0/releasenotes/ |access-date=March 21, 2013 |archive-date=September 4, 2014 |archive-url=https://web.archive.org/web/20140904012528/http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/16.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.0.13
|
| August 3, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.13/releasenotes/ |title=Mozilla Firefox 3.0.13 Release Notes |publisher=Mozilla |date=2009-08-03 |accessdate=2011-07-10}}</ref>
|-


The roll-out of Firefox 16 revision 16.0.0 was stopped on October 10, 2012, after Mozilla detected a security flaw and recommended downgrading to 15.0.1 until the issue could be fixed.<ref>{{cite web |title=Security Vulnerability in Firefox 16 |website=Mozilla Blog |publisher=Mozilla |date=2012-10-10 |url=https://blog.mozilla.org/security/2012/10/10/security-vulnerability-in-firefox-16/ |access-date=October 10, 2012 |archive-date=October 11, 2012 |archive-url=https://web.archive.org/web/20121011175740/http://blog.mozilla.org/security/2012/10/10/security-vulnerability-in-firefox-16/ |url-status=live }}</ref> The security flaw was fixed in version 16.0.1, which was released the following day, October 11, 2012.<ref name="Firefox 16.0.1">{{cite web |title=Firefox Notes – Desktop: Firefox 16.0.1 release notes |website=Mozilla |date=October 11, 2012 |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/16.0.1/releasenotes/ |access-date=June 20, 2013 |archive-date=September 4, 2014 |archive-url=https://web.archive.org/web/20140904012529/http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/16.0.1/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.0.14
|
| September 9, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.14/releasenotes/ |title=Mozilla Firefox 3.0.14 Release Notes |publisher=Mozilla |date=2009-09-09 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 17 through 23 ===
| style="background:salmon;" | 3.0.15
{{plain image with caption|Mozilla Firefox logo 2013.svg|Logo used from Firefox 23 to Firefox 56|150px}}
|
Firefox 17 and Firefox ESR 17 were released on November 20, 2012.<ref name="Firefox 17.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/17.0/releasenotes/ |title=Mozilla Firefox 17.0 Release notes |publisher=Mozilla |date=November 20, 2012 |access-date=November 20, 2012 |archive-date=September 4, 2014 |archive-url=https://web.archive.org/web/20140904012517/http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/17.0/releasenotes/ |url-status=live }}</ref> It was not planned to bring as many user-facing features as previous releases, it brings improved display of location bar results,<ref>{{cite web |title=Improved display of location bar results |url=https://wiki.mozilla.org/Improve_display_of_location_bar_results |website=Mozilla Wiki |publisher=Mozilla |access-date=July 31, 2012 |archive-date=September 30, 2019 |archive-url=https://web.archive.org/web/20190930101247/https://wiki.mozilla.org/Improve_display_of_location_bar_results |url-status=live }}</ref> improvements to the silent update mechanism for users with incompatible add-ons,<ref>{{cite web |title=Silent update: improvements for users with incompatible add-ons |url=https://wiki.mozilla.org/Silent_Update_not_now_prompt |website=Mozilla Wiki |publisher=Mozilla |access-date=July 31, 2012 |archive-date=October 8, 2019 |archive-url=https://web.archive.org/web/20191008141957/https://wiki.mozilla.org/Silent_Update_not_now_prompt |url-status=live }}</ref> and refinements to the Click-To-Play system introduced in Firefox 14.<ref>{{cite web |title=Click-to-Play Part II |url=https://wiki.mozilla.org/Click-to-play_part_II |website=Mozilla Wiki |publisher=Mozilla |access-date=October 21, 2012 |archive-date=July 24, 2019 |archive-url=https://web.archive.org/web/20190724123852/https://wiki.mozilla.org/Click-to-play_part_II |url-status=live }}</ref> A new feature for developers, an HTML tree editor<ref>{{cite web |title=HTML tree editor |url=https://wiki.mozilla.org/DevTools/Features/HTMLTreeEditor |website=Mozilla Wiki |publisher=Mozilla |access-date=2012-09-07 |archive-date=July 24, 2019 |archive-url=https://web.archive.org/web/20190724123849/https://wiki.mozilla.org/DevTools/Features/HTMLTreeEditor |url-status=live }}</ref> is also included. Firefox 17 is the first version of the browser that uses SpiderMonkey 17.<ref>{{cite web |url=https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/17 |title=SpiderMonkey 17 – Mozilla {{pipe}} MDN |website=developer.mozilla.org |date=2014-05-02 |access-date=2014-07-25 |archive-date=November 10, 2014 |archive-url=https://web.archive.org/web/20141110194024/https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/17 |url-status=dead }}</ref>
| October 27, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.15/releasenotes/ |title=Mozilla Firefox 3.0.15 Release Notes |publisher=Mozilla |date=2009-10-27 |accessdate=2011-07-10}}</ref>
|-


Starting with Firefox 17, Mac OS X support is exclusively for ], Lion, and ].
| style="background:salmon;" | 3.0.16
|
| December 15, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.16/releasenotes/ |title=Mozilla Firefox 3.0.16 Release Notes |publisher=Mozilla |date=2009-12-15 |accessdate=2011-07-10}}</ref>
|-


Firefox 18 was released on January 8, 2013.<ref>{{cite web |url=https://wiki.mozilla.org/RapidRelease/Calendar |title=Firefox Rapid Release Calendar |website=Mozilla Wiki |access-date=January 8, 2013 |archive-date=December 21, 2012 |archive-url=https://web.archive.org/web/20121221075928/https://wiki.mozilla.org/RapidRelease/Calendar |url-status=live }}</ref> A new feature for Firefox 18 is ], Mozilla's next generation JavaScript engine,<ref>{{cite web |first=David |last=Anderson |title=IonMonkey in Firefox 18 |website=Mozilla Blog |publisher=Mozilla |date=2012-09-12 |url=https://blog.mozilla.org/javascript/2012/09/12/ionmonkey-in-firefox-18/ |access-date=2012-10-12 |archive-date=May 2, 2019 |archive-url=https://web.archive.org/web/20190502131554/https://blog.mozilla.org/javascript/2012/09/12/ionmonkey-in-firefox-18/ |url-status=live }}</ref> it also uses some functions of ].<ref name="Firefox 18.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/18.0/releasenotes/ |title=Mozilla Firefox 18.0 Release Notes |publisher=Mozilla |date=January 8, 2013 |access-date=January 8, 2013 |archive-date=June 22, 2014 |archive-url=https://web.archive.org/web/20140622093557/http://www.mozilla.org/en-US/firefox/18.0/releasenotes/ |url-status=live }}</ref> Firefox 19 was released on February 19, 2013, featuring a built-in ] viewer.<ref name="Firefox 19.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0/releasenotes/ |title=Mozilla Firefox 19.0 Release Notes |publisher=Mozilla |date=February 19, 2013 |access-date=February 19, 2013 |archive-date=September 3, 2014 |archive-url=https://web.archive.org/web/20140903231203/http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.0.17
|
| January 5, 2010
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.17/releasenotes/ |title=Mozilla Firefox 3.0.17 Release Notes |publisher=Mozilla |date=2010-01-05 |accessdate=2011-07-10}}</ref>
|-


Firefox 20 was released on April 2, 2013, and introduced a panel-based download manager,<ref>{{cite web |title=Panel-based download manager |url=https://wiki.mozilla.org/User:P.A./Panel-based_Download_Manager |website=Mozilla Wiki |publisher=Mozilla |access-date=August 28, 2012 |archive-date=October 2, 2019 |archive-url=https://web.archive.org/web/20191002151621/https://wiki.mozilla.org/User:P.A./Panel-based_Download_Manager |url-status=live }}</ref><ref name="Firefox 20.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/20.0/releasenotes/ |title=Firefox Notes – Desktop |website=Mozilla |date=April 2, 2013 |access-date=April 2, 2013 |archive-date=April 3, 2013 |archive-url=https://web.archive.org/web/20130403215208/http://www.mozilla.org/en-US/firefox/20.0/releasenotes/ |url-status=live }}</ref> along with H.264 decoding on the <code><video></code> tag (on Windows only), and per-window private browsing. It also includes a new developer toolbox, that combines all developer tools into one panel.
| style="background:salmon;" | 3.0.18
|
| February 17, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.18/releasenotes/ |title=Mozilla Firefox 3.0.18 Release Notes |publisher=Mozilla |date=2010-02-17 |accessdate=2011-07-10}}</ref>
|-


Firefox 21 was released on May 14, 2013. The Social API now supports multiple providers, and an enhanced three-state UI for Do Not Track (DNT).<ref name="Firefox 21.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/21.0/releasenotes/ |title=Mozilla Firefox 21.0 Release Notes |website=Mozilla |date=May 14, 2013 |access-date=May 14, 2013 |archive-date=May 16, 2013 |archive-url=https://web.archive.org/web/20130516044340/http://www.mozilla.org/en-US/firefox/21.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.0.19
|
| March 30, 2010
|''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.0.19/releasenotes/ |title=Mozilla Firefox 3.0.19 Release Notes |publisher=Mozilla |date=2010-03-30 |accessdate=June 6, 2017}}</ref>
* Fixed several security and stability issues.
|-


Firefox 22 was released on June 25, 2013. ] is now enabled by default.<ref name="Firefox 22.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/22.0/releasenotes/ |title=Firefox Beta Notes – Desktop |website=Mozilla |date=May 16, 2013 |access-date=June 20, 2013 |archive-date=September 3, 2014 |archive-url=https://web.archive.org/web/20140903224816/http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/22.0/releasenotes/ |url-status=live }}</ref> Partial CSS Flexbox support was added (flex-wrap support was scheduled for Firefox 28<ref>{{cite web |url=https://bugzilla.mozilla.org/show_bug.cgi?id=702508#c61 |title=702508 – Support parsing/computing multi-line flexbox properties "flex-wrap", "align-content" |website=bugzilla.mozilla.org |access-date=2014-02-27 |archive-date=February 3, 2019 |archive-url=https://web.archive.org/web/20190203023701/https://bugzilla.mozilla.org/show_bug.cgi?id=702508#c61 |url-status=live }}</ref>). A new feature for Firefox 22 was OdinMonkey, Mozilla's next generation JavaScript engine.
| style="vertical-align:top;" rowspan="30" | ''']'''
| style="vertical-align:top;" rowspan="30" | 1.9.1
| style="background:pink;" | 3.1a1
| ''Shiretoko Alpha 1''
| July 28, 2008
| ''First Firefox 3.1 alpha release.''<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2008/07/28/firefox-31-alpha-1-now-available-for-download/ |title=Mozilla Firefox 3.1 Alpha 1 Release Announcement |publisher=Mozilla Developer News |date=2008-07-28 |accessdate=2011-07-10}}</ref>
* Web standards improvements.
* Text API for the <canvas> element.
* Support for using border images.
* Support for DOM query selectors.
* Improvements to Smart Location Bar.
* New tab-switching behavior.
|-


Firefox 23 was released on August 6, 2013. It includes an updated Firefox logo, mixed content blocking enabled by default to defend against ]s, implementation of the <code><input type="range"></code> form control attribute in HTML5, dropping support for the ] as well as the <code>text-decoration:blink</code> ], the restriction to have to "switch to a different search provider across the entire browser", and a global browser console, a new network monitor among other things. JavaScript is automatically enabled by the update, without regard to the previous setting, and the ability to turn it off has been removed from the interface,<ref name="Firefox 23.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/23.0/releasenotes/ |title=Firefox 23.0 Release Notes |website=] |access-date=August 24, 2013 |archive-date=March 28, 2014 |archive-url=https://web.archive.org/web/20140328214014/http://www.mozilla.org/en-US/firefox/23.0/releasenotes/ |url-status=live }}</ref> the "contentious" change was made because many websites depend on JavaScript and it was felt that users unaware that they had disabled JavaScript were attributing the resulting unpredictable ] to ]s in Firefox.<ref>{{cite news |title=Firefox 23 finally kills the blink tag, removes ability to turn off JavaScript, introduces new logo |first=Sebastian |last=Anthony |date=August 7, 2013 |website=] |url=http://www.extremetech.com/computing/163291-firefox-23-finally-kills-the-blink-tag-removes-ability-to-turn-off-javascript-introduces-new-logo |access-date=August 24, 2013 |quote=This contentious change derives from the fact that disabling JavaScript breaks many websites – and some people might turn off JavaScript without actually knowing what it does, resulting in unpredictable and frustrating behavior that the user might blame on Firefox. JavaScript can still be disabled via <code>about:config</code> or with ] (such as ]). |archive-date=March 29, 2014 |archive-url=https://web.archive.org/web/20140329071544/http://www.extremetech.com/computing/163291-firefox-23-finally-kills-the-blink-tag-removes-ability-to-turn-off-javascript-introduces-new-logo |url-status=live }}</ref>
| style="background:pink;" | 3.1a2
| ''Shiretoko Alpha 2''
| September 5, 2008
| ''Second Firefox 3.1 alpha release.''<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2008/09/05/firefox-31-alpha-2-now-available-for-download/ |title=Mozilla Firefox 3.1 Alpha 2 Release Announcement |publisher=Mozilla Developer News |date=2008-09-05 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 24 through 30 ===
| style="background:pink;" | 3.1b1
]]]
| ''Firefox 3.1 Beta 1''
| October 14, 2008
| ''First Firefox 3.1 beta release.''
* Web standards improvements in Gecko layout engine.
* Added support for CSS 2.1 and CSS 3 properties.
* New tab-switching shortcut that shows previews of the tab user is switching to.
* Improved control over Smart Location Bar using special characters to restrict your search.
* Support for new web technologies.{{Clarify| reason=Vague.| date=July 2011}}<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2008/10/14/firefox-31-beta-1-now-available-for-download/ |title=Mozilla Firefox 3.1 Beta 1 Release Announcement |publisher=Mozilla Developer News |date=2008-10-14 |accessdate=2011-07-10}}</ref>
|-


Firefox 24 and Firefox 24 ESR were released on September 17, 2013. The release includes support for the new scrollbar style in Mac OS X 10.7 (and newer), closing tabs to the right, an improved browser console for debugging, and improved SVG rendering, among other things.<ref name="Firefox 24.0">{{cite web |series=Firefox Notes – Desktop |title=Firefox 24.0 release notes |website=Mozilla |date=September 17, 2013 |url=https://www.mozilla.org/en-US/firefox/24.0/releasenotes/ |access-date=September 19, 2013 |archive-date=September 18, 2013 |archive-url=https://web.archive.org/web/20130918002312/http://www.mozilla.org/en-US/firefox/24.0/releasenotes/ |url-status=live }}</ref> It is the first version of the browser that uses SpiderMonkey 24.<ref>{{cite web |url=https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/24 |title=SpiderMonkey 24 – Mozilla {{pipe}} MDN |website=developer.mozilla.org |date=2014-05-02 |access-date=2014-07-25 |archive-date=August 8, 2014 |archive-url=https://web.archive.org/web/20140808180131/https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/24 |url-status=dead }}</ref>
| style="background:pink;" | 3.1b2
| ''Firefox 3.1 Beta 2''
| December 8, 2008
| ''Second Firefox 3.1 beta release.'' Available in 54 languages. Added new Private Browsing Mode. Added functions to facilitate clearing recent history by time as well as to remove all traces of a website. New support for ] threads. New TraceMonkey JavaScript engine on by default for web content. Improvements to Gecko layout engine, including speculative parsing for faster content rendering. Removed new tab-switching behavior based on user feedback. Support for new web technologies.{{Clarify| reason=Vague.| date=July 2011}}<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2008/12/08/firefox-31-beta-2-now-available-for-download/ |title=Mozilla Firefox 3.1 Beta 2 Release Announcement |publisher=Mozilla Developer News |date=2008-12-08 |accessdate=2011-07-10}}</ref>
|-


Firefox 25 was released on October 29, 2013. Firefox 25 Nightly was at one point slated to include the Australis theme, but Australis did not actually land on Nightly until Firefox 28,<ref name="Australis schedule update #2">{{cite web |last=Dolske |first=Justin |title=Australis schedule update #2 |url=https://mail.mozilla.org/pipermail/firefox-dev/2013-July/000475.html |access-date=August 16, 2013 |date=July 1, 2013 |archive-date=October 2, 2019 |archive-url=https://web.archive.org/web/20191002152805/https://mail.mozilla.org/pipermail/firefox-dev/2013-July/000475.html |url-status=dead }}</ref> did not make it to Firefox 28 Aurora channel, and was finally available with Firefox 29.<ref name="Planning 2013-11-20">{{cite web |title=Planning 2013-11-20 |url=https://wiki.mozilla.org/Firefox/Planning/2013-11-20#Nightly_.2829.29 |access-date=January 12, 2014 |archive-date=October 8, 2019 |archive-url=https://web.archive.org/web/20191008082611/https://wiki.mozilla.org/Firefox/Planning/2013-11-20#Nightly_.2829.29 |url-status=live }}</ref> This release added support for <code><iframe srcdoc></code> attribute, <code>background-attachment:local</code> in CSS, along with ] API support, a separate find bar for each tab and many other bug fixes.<ref name="Firefox 25.0">{{cite web |title=Firefox Notes – Desktop: Firefox 25.0 release notes |website=Mozilla |date=October 29, 2013 |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/25.0/releasenotes/ |access-date=October 29, 2013 |archive-date=August 28, 2014 |archive-url=https://web.archive.org/web/20140828135612/http://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/25.0/releasenotes/ |url-status=live }}</ref><ref name="What's New in Firefox 25">{{cite web |title=What's New in Firefox 25 |url=http://www.sitepoint.com/whats-new-firefox-25/ |access-date=November 10, 2013 |date=October 31, 2013 |archive-date=November 10, 2013 |archive-url=https://web.archive.org/web/20131110090819/http://www.sitepoint.com/whats-new-firefox-25/ |url-status=live }}</ref><ref name="Here's What's New In Firefox 25">{{cite web |title=Here's What's New In Firefox 25 |url=http://www.addictivetips.com/web/firefox-25-new-features/ |access-date=November 10, 2013 |date=October 30, 2013 |archive-date=November 10, 2013 |archive-url=https://web.archive.org/web/20131110085723/http://www.addictivetips.com/web/firefox-25-new-features/ |url-status=live }}</ref>
| style="background:pink;" | 3.1b3
| ''Firefox 3.1 Beta 3''
| March 12, 2009
| ''Third Firefox 3.1 beta release.'' <ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/03/12/firefox-31-beta-3-now-available-for-download/ |title=Mozilla Firefox 3.1 Beta 3 Release Announcement |publisher=Mozilla Developer News |date=2009-03-12 |accessdate=2011-07-10}}</ref>
* Available in 64 languages.
* Improved new Private Browsing Mode.
* Improvements to web worker thread support.
* Improved performance and stability with the TraceMonkey JavaScript engine.
* New native JSON support.
* Improvements to Gecko layout engine, including speculative parsing for faster content rendering.
* Support for new web technologies such as <video> and <audio> elements, W3C Geolocation API, JavaScript query selectors, CSS 2.1 and 3 properties, SVG transforms and offline applications.
|-


Firefox 26 was released on December 10, 2013. Firefox 26 changed the behavior of ] plugins to "click-to-play" mode instead of automatically running them. It also added support for ] on Linux, password manager support for script-generated fields, and the ability for Windows users without advanced write permissions to update Firefox, as well as many bug fixes and developer-related changes.<ref name="Firefox 26.0">{{cite web |title=Firefox Notes – Desktop: Firefox 26.0 Release Notes |website=Mozilla |date=December 10, 2013 |access-date=December 11, 2013 |url=https://www.mozilla.org/en-US/firefox/26.0/releasenotes/ |archive-date=December 10, 2013 |archive-url=https://web.archive.org/web/20131210173917/http://www.mozilla.org/en-US/firefox/26.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.5b4
| ''Firefox 3.5 Beta 4''
| April 27, 2009
| ''First Firefox 3.5 beta release.''<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/04/27/firefox-35-beta-4-now-available-for-download/ |title=Mozilla Firefox 3.5 Beta 4 Release Announcement |publisher=Mozilla Developer News |date=2009-04-27 |accessdate=2011-07-10}}</ref>
* Available in 70 languages.
* Improved tools for controlling private data, including Private Browsing Mode.
* Better performance and stability with new TraceMonkey JavaScript engine.
* Ability to provide Location Aware Browsing using web standards for geolocation.
* Support for native JSON, and web worker threads.
* Improvements to Gecko layout engine, including speculative parsing for faster content rendering.
* Support for new web technologies such as HTML5 <video> and <audio> elements, downloadable fonts and other new CSS properties, JavaScript query selectors, HTML5 offline data storage for applications, and SVG transforms.
|-


Firefox 27 was released on February 4, 2014. It adds improved Social API and ] 3.1 support, as well as enabling of ] 1.1 and 1.2 by default after having been tested through a toggle in <code>about:config</code> since version 23 (TLS 1.1<ref>{{Cite web |last=Leisink |first=Hugo |date=7 August 2013 |title=Firefox 23 supports TLS/1.1... finally!! |url=https://www.hiawatha-webserver.org/ |access-date=2024-08-06 |website=Hiawatha webserver |language=en |archive-date=January 24, 2021 |archive-url=https://web.archive.org/web/20210124060903/https://www.hiawatha-webserver.org/ |url-status=dead }}</ref><ref>{{Cite web |last=Hornby |first=Taylor |date=August 9, 2013 |title=Enabling TLS v1.1 on Firefox 23 |url=https://defuse.ca/blog/enabling-tls-11-on-firefox-version-23.html |access-date=2024-08-06 |website=defuse.ca}}</ref>) and 24, released on September 17, 2013.<ref>{{cite web |title=TLS 1.2 FAQ – Knowledge Base |url=https://answers.psionline.com/knowledgebase/tls-1-2-faq/ |access-date=August 31, 2021 |archive-date=August 31, 2021 |archive-url=https://web.archive.org/web/20210831134926/https://answers.psionline.com/knowledgebase/tls-1-2-faq/ |url-status=live }}</ref> Also, it brings many bug fixes, security improvements, and developer-related changes.<ref name="Firefox 27.0">{{cite web |title=Mozilla Firefox 27.0 Release Notes |website=Mozilla |date=February 4, 2014 |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/27.0/releasenotes/ |access-date=February 14, 2014 |archive-date=February 7, 2014 |archive-url=https://web.archive.org/web/20140207095334/https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/27.0/releasenotes/ |url-status=live }}</ref> Firefox 28 was released on March 18, 2014, and added support for VP9 video decoding and support for Opus in WebM.<ref name="Firefox 28.0">{{cite web |title=Mozilla Firefox 28.0 Release Notes |website=Mozilla |date=March 18, 2014 |url=https://www.mozilla.org/en-US/firefox/28.0/releasenotes/ |access-date=March 18, 2014 |archive-date=March 18, 2014 |archive-url=https://web.archive.org/web/20140318134719/http://www.mozilla.org/en-US/firefox/28.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.5b99
| style="white-space:nowrap;" | ''Firefox 3.5 Preview''
| June 8, 2009
| ''Preview for Firefox 3.5, pre-release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5b99/releasenotes/ |title=Mozilla Firefox 3.5 Preview |publisher=Mozilla |date=2009-06-08 |accessdate=2011-07-10}}</ref>
|-


Firefox 29 was released on April 29, 2014, and includes a redesigned interface codenamed Australis, it also removes the add-on bar and moves its content to the navigation bar.<ref name="Firefox 29.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/29.0/releasenotes/ |title=Mozilla Firefox 29 Release Notes |website=Mozilla |date=April 29, 2014 |access-date=April 29, 2014 |archive-date=April 29, 2014 |archive-url=https://web.archive.org/web/20140429201553/https://www.mozilla.org/en-US/firefox/29.0/releasenotes/ |url-status=live }}</ref> Additionally, it introduced automatic correction of protocol typos to the address bar, meaning that, for example, <code>ttps://</code> is automatically corrected to <code>https://</code>.<ref>{{cite web |title=Firefox corrects protocol typos now |url=https://www.ghacks.net/2014/05/05/firefox-corrects-protocol-typos-now/ |website=] Technology News |access-date=3 September 2021 |date=5 May 2014 |archive-date=September 3, 2021 |archive-url=https://web.archive.org/web/20210903210125/https://www.ghacks.net/2014/05/05/firefox-corrects-protocol-typos-now/ |url-status=live }}</ref> Firefox 30 was released on June 10, 2014. It adds support for ] 1.0 and a new sidebar button, and most plugins are not activated by default.<ref name="Firefox 30.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/30.0/releasenotes/ |title=Mozilla Firefox 30 Release Notes |website=Mozilla |date=June 10, 2014 |access-date=June 10, 2014 |archive-date=June 13, 2014 |archive-url=https://web.archive.org/web/20140613073048/http://www.mozilla.org/en-US/firefox/30.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=http://www.ghacks.net/2014/06/10/firefox-30-released-find-new/ |title=Firefox 30 released: Find out what is new |last=Brinkmann |first=Martin |website=] |date=June 10, 2014 |access-date=June 10, 2014 |archive-date=October 9, 2019 |archive-url=https://web.archive.org/web/20191009121751/https://www.ghacks.net/2014/06/10/firefox-30-released-find-new/ |url-status=live }}</ref>
| style="white-space:nowrap; background:pink;" | 3.5 RC1
| ''Firefox 3.5 <br /> Release Candidate 1''
| June 16, 2009
| ''First Firefox 3.5 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5rc1/releasenotes/ |title=Mozilla Firefox 3.5 Release Candidate 1 Release Notes |publisher=Mozilla |date=2009-06-24 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 31 through 37 ===
| style="white-space:nowrap; background:pink;" | 3.5 RC2
Firefox 31 and Firefox 31 ESR were released on July 22, 2014. Both versions added ] on the new tab page and were improved to block ] from downloaded files, along with other new features.<ref name="Firefox 31.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/31.0/releasenotes/ |title=Mozilla Firefox 31 Release Notes |website=Mozilla |date=July 22, 2014 |access-date=July 22, 2014 |archive-date=July 26, 2014 |archive-url=https://web.archive.org/web/20140726060358/https://www.mozilla.org/en-US/firefox/31.0/releasenotes/ |url-status=live }}</ref> Firefox 31 ESR is the first ESR to include the Australis interface, unifying the user experience across different Firefox versions. Firefox 24.x.x ESR versions would be automatically updated to ESR version 31 after October 14, 2014.<ref name="Firefox ESR Release Cycle">{{cite web |url=https://wiki.mozilla.org/Enterprise/Firefox/ExtendedSupport:Proposal |title=Enterprise/Firefox/ExtendedSupport:Proposal – MozillaWiki |website=wiki.mozilla.org |access-date=2014-07-25 |archive-date=January 19, 2012 |archive-url=https://web.archive.org/web/20120119123039/https://wiki.mozilla.org/Enterprise/Firefox/ExtendedSupport:Proposal |url-status=live }}</ref>
| ''Firefox 3.5 <br /> Release Candidate 2''
| June 19, 2009
| ''Second Firefox 3.5 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5rc1/releasenotes/ |title=Mozilla Firefox 3.5 Release Candidate 2 Release Notes |publisher=Mozilla |date=2009-06-24 |accessdate=2011-07-10}}</ref>
|-


Firefox 32 was released on September 2, 2014. It shows off HTTP ] improvements, adds ]/] support in the Developer Tools UI and widens HTML5 support, among other things.<ref>{{cite web |url=https://betanews.com/2014/09/02/firefox-32-final-released-for-desktop-shows-off-http-caching-improvements-and-other-minor-tweaks/ |title=Firefox 32 FINAL released for desktop, shows off HTTP caching improvements and other minor tweaks |last=Peers |first=Nick |website=BetaNews.com |date=September 2, 2014 |access-date=September 2, 2014 |archive-date=September 3, 2014 |archive-url=https://web.archive.org/web/20140903142612/http://betanews.com/2014/09/02/firefox-32-final-released-for-desktop-shows-off-http-caching-improvements-and-other-minor-tweaks/ |url-status=live }}</ref><ref name="Firefox 32.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/32.0/releasenotes/ |title=Mozilla Firefox 32 Release Notes |website=Mozilla |date=September 2, 2014 |access-date=September 2, 2014 |archive-date=September 3, 2014 |archive-url=https://web.archive.org/web/20140903152554/https://www.mozilla.org/en-US/firefox/32.0/releasenotes/ |url-status=live }}</ref>
| style="white-space:nowrap; background:pink;" | 3.5 RC3
| ''Firefox 3.5 <br /> Release Candidate 3''
| June 24, 2009
| ''Third Firefox 3.5 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5rc1/releasenotes/ |title=Mozilla Firefox 3.5 Release Candidate 3 Release Notes |publisher=Mozilla |date=2009-06-24 |accessdate=2011-07-10}}</ref>
|-


Firefox 33 was released on October 14, 2014. It now has ''off-main-thread compositing'' (OMTC) enabled by default on Windows (which brings ] improvements),<ref>{{cite web |url=https://wiki.mozilla.org/Platform/GFX/OffMainThreadCompositing |title=Platform/GFX/OffMainThreadCompositing |access-date=October 15, 2014 |archive-date=October 1, 2019 |archive-url=https://web.archive.org/web/20191001100347/https://wiki.mozilla.org/Platform/GFX/OffMainThreadCompositing |url-status=live }}</ref> ] support, search suggestions on about:home and about:newtab, ] search improvements, ] restore reliability improvements, and other changes.<ref name="Firefox 33.0">{{cite web |title=Mozilla Firefox 33.0 Release Notes |website=Mozilla |date=October 14, 2014 |url=https://www.mozilla.org/en-US/firefox/33.0/releasenotes/ |access-date=October 14, 2014 |archive-date=October 16, 2014 |archive-url=https://web.archive.org/web/20141016202332/https://www.mozilla.org/en-US/firefox/33.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5/releasenotes/ |title=Mozilla Firefox 3.5 Release Notes |publisher=Mozilla |date=2009-06-30 |accessdate=April 22, 2012}}</ref>
| ''Firefox 3.5 <br /><small>"]"</small>''
| June 30, 2009
| ''Official version 3.5 release.''
* Support for the HTML5 <video> and <audio> elements including native support for Ogg Theora video and Vorbis audio
* Improved tools for controlling your private data, including a Private Browsing Mode
* Better web application performance using the new TraceMonkey JavaScript engine
* The ability to share your location with websites using Location Aware Browsing
* Support for native JSON, and web worker threads
* Improvements to the Gecko layout engine, including speculative parsing for faster content rendering
* Support for new web technologies such as:
** Downloadable fonts
** CSS media queries
** New transformations and properties
** JavaScript query selectors
** HTML5 local storage and offline application storage
** <canvas> text
** ICC profiles
** SVG transforms.
|-


Firefox 33.1 was released on November 10, 2014, celebrating Firefox's 10-year anniversary.<ref name="Firefox 33.1">{{cite web |url=https://www.mozilla.org/en-US/firefox/33.1/releasenotes/ |title=Mozilla Firefox 33.1 Release Notes |website=Mozilla |date=November 10, 2014 |access-date=November 10, 2014 |archive-date=October 17, 2020 |archive-url=https://web.archive.org/web/20201017202825/https://www.mozilla.org/en-US/firefox/33.1/releasenotes/ |url-status=live }}</ref><ref name=FirefoxDecade>{{cite web |url=https://wiki.mozilla.org/Firefox/Decade |title=Firefox/Decade – MozillaWiki |access-date=November 10, 2014 |archive-date=March 24, 2018 |archive-url=https://web.archive.org/web/20180324162310/https://wiki.mozilla.org/Firefox/Decade |url-status=live }}</ref> Firefox 33.1.1 was released for desktop only on November 14, 2014, fixing a startup crash.<ref name="Firefox 33.1.1">{{cite web |url=https://www.mozilla.org/en-US/firefox/33.1.1/releasenotes/ |title=Mozilla Firefox 33.1.1 Release Notes |website=Mozilla |date=November 14, 2014 |access-date=November 15, 2014 |archive-date=February 3, 2016 |archive-url=https://web.archive.org/web/20160203055919/https://www.mozilla.org/en-US/firefox/33.1.1/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.1
|
| July 16, 2009
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.1/releasenotes/ |title=Mozilla Firefox 3.5.1 Release Notes |publisher=Mozilla |date=2009-07-16 |accessdate=2011-07-10}}</ref>
|-


]
| style="background:salmon;" | 3.5.2
Firefox 34 was released on December 1, 2014. It brings ''Firefox Hello'' (a ] client for voice and video chat), an improved ], and the implementation of ] (draft14) and ], together with other features. It also disables ], and enables the ability to recover from a locked Firefox process and to switch themes and personas directly in the customization mode.<ref name="Firefox 34.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/34.0/releasenotes/ |title=Mozilla Firefox 34.0 Release Notes |website=Mozilla |date=December 1, 2014 |access-date=December 1, 2014 |archive-date=March 14, 2023 |archive-url=https://web.archive.org/web/20230314221726/https://www.mozilla.org/en-US/firefox/34.0/releasenotes/ |url-status=live }}</ref>
|
| August 3, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.2/releasenotes/ |title=Mozilla Firefox 3.5.2 Release Notes |publisher=Mozilla |date=2009-08-03 |accessdate=2011-07-10}}</ref>
|-


Firefox 35 was released on January 13, 2015. It brings support for a room-based conversations model to the Firefox Hello chat service, and other functions, it also includes security fixes.<ref name="Firefox 35.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/35.0/releasenotes/ |title=Firefox – Notes (35.0) – Mozilla |publisher=Mozilla |access-date=January 13, 2015 |archive-date=January 19, 2015 |archive-url=https://web.archive.org/web/20150119145602/https://www.mozilla.org/en-US/firefox/35.0/releasenotes/ |url-status=live }}</ref> Firefox 36 was released for desktop on February 24, 2015, bringing full ] support and other smaller improvements and fixes.<ref name="Firefox 36.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/36.0/releasenotes/ |title=Mozilla Firefox 36.0 Release Notes |website=Mozilla |date=February 24, 2015 |access-date=February 24, 2015 |archive-date=February 24, 2015 |archive-url=https://web.archive.org/web/20150224195751/https://www.mozilla.org/en-US/firefox/36.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.3
|
| September 9, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.3/releasenotes/ |title=Mozilla Firefox 3.5.3 Release Notes |publisher=Mozilla |date=2009-09-09 |accessdate=2011-07-10}}</ref>
|-


Firefox 37 was released on March 31, 2015, bringing a heartbeat user rating system, which provides user feedback about the Firefox, and improved protection against website impersonation via OneCRL centralized certificate revocation. Also, Bing search is changed to use HTTPS for secure searching, and added is support for opportunistic encryption of the HTTP traffic where the server supports HTTP/2's AltSvc feature.<ref name="Firefox 37.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/37.0/releasenotes/ |title=Firefox Release Notes (37.0) |website=Mozilla |date=March 31, 2015 |access-date=March 31, 2015 |archive-date=May 9, 2015 |archive-url=https://web.archive.org/web/20150509074126/https://www.mozilla.org/en-US/firefox/37.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.4
|
| October 27, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.4/releasenotes/ |title=Mozilla Firefox 3.5.4 Release Notes |publisher=Mozilla |date=2009-10-27 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 38 through 44 ===
| style="background:salmon;" | 3.5.5
Both Firefox 38 and Firefox 38 ESR were released on May 12, 2015, with new tab-based preferences, Ruby annotation support and availability of WebSockets in web workers, along with the implementation of the BroadcastChannel API and other features and security fixes.<ref name="Firefox 38.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/38.0/releasenotes/ |title=Firefox Release Notes (38.0) |website=Mozilla |date=May 12, 2015 |access-date=May 13, 2015 |archive-date=May 12, 2015 |archive-url=https://web.archive.org/web/20150512175420/https://www.mozilla.org/en-US/firefox/38.0/releasenotes/ |url-status=live }}</ref>
|
| November 5, 2009
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.5/releasenotes/ |title=Mozilla Firefox 3.5.5 Release Notes |publisher=Mozilla |date=2009-11-05 |accessdate=2011-07-10}}</ref>
|-


Firefox 39 was released on July 2, 2015, disabling insecure ] and ], improving performance for IPv6 fallback to IPv4 and including various security fixes.<ref name="Firefox 39.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/39.0/releasenotes/ |title=Firefox Release Notes (39.0) |website=Mozilla |date=July 2, 2015 |access-date=July 10, 2015 |archive-date=July 3, 2015 |archive-url=https://web.archive.org/web/20150703163249/https://www.mozilla.org/en-US/firefox/39.0/releasenotes/ |url-status=live }}</ref> Firefox 39.0.3 was released on August 6, 2015, to fix a zero-day exploit.<ref name="Firefox 39.0.3">{{cite web |url=https://www.mozilla.org/en-US/firefox/39.0.3/releasenotes/ |title=Firefox Release Notes (39.0.3) |website=Mozilla |date=August 6, 2015 |access-date=August 10, 2015 |archive-date=September 4, 2015 |archive-url=https://web.archive.org/web/20150904024956/https://www.mozilla.org/en-US/firefox/39.0.3/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.6
|
| December 15, 2009
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.6/releasenotes/ |title=Mozilla Firefox 3.5.6 Release Notes |publisher=Mozilla |date=2009-12-15 |accessdate=2011-07-10}}</ref>
|-


Firefox 40 was released on August 11, 2015. On ], the Australis theme was updated to reflect the overall appearance of Windows 10, and the interface is adapted for usability on ]s when used in the operating system's "Tablet mode". Firefox 40 includes additional security features, including the filtering of pages that offer ]s, and warnings during the installation of unsigned extensions, in future versions, signing of extensions will become mandatory, and the browser will refuse to install extensions that have not been signed. Firefox 40 also includes performance improvements, such as off-main-thread compositing on Linux.<ref name=engadget-fx40>{{cite web |title=Firefox version 40 set to roll with new Windows 10 features |url=https://www.engadget.com/2015/08/11/firefox-version-40-windows-10-features/ |website=] |date=August 11, 2015 |publisher=AOL |access-date=12 August 2015 |archive-date=June 20, 2019 |archive-url=https://web.archive.org/web/20190620043622/https://www.engadget.com/2015/08/11/firefox-version-40-windows-10-features/ |url-status=live }}</ref><ref name="Firefox 40.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/40.0/releasenotes/ |title=Firefox Release Notes (40.0) |website=Mozilla |date=August 11, 2015 |access-date=August 11, 2015 |archive-date=August 12, 2015 |archive-url=https://web.archive.org/web/20150812112659/https://www.mozilla.org/en-US/firefox/40.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.7
|
| January 5, 2010
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.7/releasenotes/ |title=Mozilla Firefox 3.5.7 Release Notes |publisher=Mozilla |date=2010-01-05 |accessdate=2011-07-10}}</ref>
|-


Firefox 41 was released on September 22, 2015. Among many additions are the ability to set a profile picture for a Firefox account, enhanced ] support using ], and instant messaging on Firefox Hello.<ref name="Firefox 41.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/41.0/releasenotes/ |title=Firefox Release Notes (41.0) |website=Mozilla |date=September 22, 2015 |access-date=September 22, 2015 |archive-date=September 23, 2015 |archive-url=https://web.archive.org/web/20150923031718/https://www.mozilla.org/en-US/firefox/41.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.8
|
| February 17, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.8/releasenotes/ |title=Mozilla Firefox 3.5.8 Release Notes |publisher=Mozilla |date=2010-02-17 |accessdate=2011-07-10}}</ref>
|-


Firefox 42 was released on November 3, 2015. Among many additions are private browsing with tracking protection, IPv6 support in WebRTC, and the ability to view HTML source in a tab.<ref name="Firefox 42.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/42.0/releasenotes/ |title=Firefox Release Notes (42.0) |website=Mozilla |date=November 3, 2015 |access-date=November 3, 2015 |archive-date=November 13, 2015 |archive-url=https://web.archive.org/web/20151113023749/https://www.mozilla.org/en-US/firefox/42.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.9
|
| March 30, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.9/releasenotes/ |title=Mozilla Firefox 3.5.9 Release Notes |publisher=Mozilla |date=2010-03-30 |accessdate=2011-07-10}}</ref>
|-


Firefox 43 was released on December 15, 2015. Major changes included the availability of a 64-bit version for Windows 7 and above, and a new strict blocklist.<ref name="Firefox 43.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/43.0/releasenotes/ |title=Firefox Release Notes (43.0) |website=Mozilla |date=December 15, 2015 |access-date=December 15, 2015 |archive-date=April 26, 2019 |archive-url=https://web.archive.org/web/20190426171039/https://www.mozilla.org/en-US/firefox/43.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.10
|
| June 22, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.10/releasenotes/ |title=Mozilla Firefox 3.5.10 Release Notes |publisher=Mozilla |date=2010-06-22 |accessdate=2011-07-10}}</ref>
|-


Firefox 44 was released on January 26, 2016. Among many additions are the improvement of warning pages for certificate errors and untrusted connections, enabling of H.264 and WebM/VP9 video support on systems that don't support MP4/H.264, and support for the brotli compression format via HTTPS content-encoding.<ref name="Firefox 44.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/44.0/releasenotes/ |title=Firefox Release Notes (44.0) |website=Mozilla |date=January 26, 2016 |access-date=January 26, 2016 |archive-date=March 4, 2016 |archive-url=https://web.archive.org/web/20160304025010/https://www.mozilla.org/en-US/firefox/44.0/releasenotes/ |url-status=live }}</ref> The "Ask me every time" cookies option was additionally removed without any notifications.<ref>{{cite web |url=https://bugzilla.mozilla.org/show_bug.cgi?id=606655 |title=606655 – Remove 'Ask me everytime' cookies option |website=bugzilla.mozilla.org |access-date=November 21, 2016 |archive-date=January 8, 2017 |archive-url=https://web.archive.org/web/20170108011649/https://bugzilla.mozilla.org/show_bug.cgi?id=606655 |url-status=live }}</ref>
| style="background:salmon;" | 3.5.11
|
| July 20, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.11/releasenotes/ |title=Mozilla Firefox 3.5.11 Release Notes |publisher=Mozilla |date=2010-07-20 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 45 through 51 ===
| style="background:salmon;" | 3.5.12
Firefox 45 and Firefox 45 ESR were released on March 8, 2016. Among many additions were Instant Browser sharing through Hello, the addition of Guarani locale, the ability to filter snapshot output in memory tool, and the removal of the Tab Groups (panorama) feature.<ref name="Firefox 45.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/45.0/releasenotes/ |title=Firefox Release Notes (45.0) |website=Mozilla |date=March 8, 2016 |access-date=March 8, 2016 |archive-date=March 17, 2016 |archive-url=https://web.archive.org/web/20160317215950/https://www.mozilla.org/en-US/firefox/45.0/releasenotes/ |url-status=live }}</ref>
|
| September 7, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.12/releasenotes/ |title=Mozilla Firefox 3.5.12 Release Notes |publisher=Mozilla |date=2010-09-07 |accessdate=2011-07-10}}</ref>
|-


Firefox 46 was released on April 26, 2016. Among the many additions were improved security of the JavaScript Just In Time (JIT) Compiler, the GTK3 integration (Linux only), HKDF support for Web Crypto API.<ref name="Firefox 46.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/46.0/releasenotes/ |title=Firefox Release Notes (46.0) |website=Mozilla |date=April 26, 2016 |access-date=April 26, 2016 |archive-date=April 26, 2016 |archive-url=https://web.archive.org/web/20160426171401/https://www.mozilla.org/en-US/firefox/46.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.13
|
| September 15, 2010
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.13/releasenotes/ |title=Mozilla Firefox 3.5.13 Release Notes |publisher=Mozilla |date=2010-09-15 |accessdate=2011-07-10}}</ref>
|-


Firefox 47 was released on June 7, 2016. Among the many additions were support for Google's Widevine CDM on Windows and Mac OS X so streaming services like Amazon Video can switch from Silverlight to encrypted HTML video, enabling VP9 video codec for users with fast machines, the ability of embedded YouTube videos to play with HTML video if Flash is not installed, and the addition of the ].<ref name="Firefox 47.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/47.0/releasenotes/ |title=Firefox Release Notes (47.0) |website=Mozilla |date=June 7, 2016 |access-date=January 27, 2018 |archive-date=July 19, 2016 |archive-url=https://web.archive.org/web/20160719121556/https://www.mozilla.org/en-US/firefox/47.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.14
|
| October 19, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.14/releasenotes/ |title=Mozilla Firefox 3.5.14 Release Notes |publisher=Mozilla |date=2010-10-19 |accessdate=2011-07-10}}</ref>
|-


Firefox 48 was released on August 2, 2016. Among the many additions were enhanced download protection and the removal of the Windows Remote Access Service modem Autodial. It was also the first official release with ] (multi-process Firefox, meaning that the interface and web pages are running in separate processes in the computer) was enabled. It is the last Firefox version to support ], ], and ].<ref name="Firefox 48.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/48.0/releasenotes/ |title=Firefox Release Notes (48.0) |website=Mozilla |date=August 2, 2016 |access-date=January 27, 2018 |archive-date=September 20, 2016 |archive-url=https://web.archive.org/web/20160920221127/https://www.mozilla.org/en-US/firefox/48.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.15
|
| October 27, 2010
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.15/releasenotes/ |title=Mozilla Firefox 3.5.15 Release Notes |publisher=Mozilla |date=2010-10-27 |accessdate=2011-07-10}}</ref>
|-


Firefox 49 was released on September 20, 2016. Among the many additions were an updated Firefox Login Manager, improved video performance for users on systems that support ] without hardware acceleration, added ] controls to HTML audio and video that let users loop files or play files at 1.25x speed, improvements in about:memory reports for tracking font memory usage, and the removal of Firefox Hello. Additionally, support for processors without ] extensions such as the ] and ] under Windows is dropped.<ref name="Firefox 49.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/49.0/releasenotes/ |title=Firefox Release Notes (49.0) |website=Mozilla |date=September 20, 2016 |access-date=September 20, 2016 |archive-date=October 22, 2016 |archive-url=https://web.archive.org/web/20161022013121/https://www.mozilla.org/en-US/firefox/49.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.16
|
| December 9, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.16/releasenotes/ |title=Mozilla Firefox 3.5.16 Release Notes |publisher=Mozilla |date=2010-12-09 |accessdate=2011-07-10}}</ref>
|-


Firefox 50 was released on November 15, 2016. Among the many additions were playback video on more sites without plugins with WebM EME Support for Widevine on Windows and Mac, improved performance for SDK extensions or extensions using the SDK module loader, download protection for a large number of executable file types on Windows, Mac OS, and Linux, and increased availability of WebGL to more than 98 percent of users on Windows 7 and newer.<ref name="Firefox 50.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/50.0/releasenotes/ |title=Firefox Release Notes (50.0) |website=Mozilla |date=November 15, 2016 |access-date=November 15, 2016 |archive-date=January 15, 2024 |archive-url=https://web.archive.org/web/20240115064222/https://www.mozilla.org/en-US/firefox/50.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.17
|
| March 1, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.17/releasenotes/ |title=Mozilla Firefox 3.5.17 Release Notes |publisher=Mozilla |date=2011-03-01 |accessdate=2011-07-10}}</ref>
|-


Firefox 51 was released on January 24, 2017. Among the many additions were added support for FLAC (Free Lossless Audio Codec) playback, better Tab Switching, support for WebGL 2, and a warning that is displayed when a login page does not have a secure connection.<ref name="Firefox 51.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/51.0/releasenotes/ |title=Firefox Release Notes (51.0) |website=Mozilla |date=January 24, 2017 |access-date=January 24, 2017 |archive-date=January 25, 2017 |archive-url=https://web.archive.org/web/20170125120353/https://www.mozilla.org/en-US/firefox/51.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.5.18
|
| March 22, 2011
| ''Off-cycle security update.''
* Blacklists a few invalid HTTPS certificates.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.5.18/releasenotes/ |title=Mozilla Firefox 3.5.18 Release Notes |publisher=Mozilla |date=2011-03-22 |accessdate=2011-07-10}}</ref>
|-
| style="background:salmon;" | 3.5.19
|
| April 28, 2011
|''Regular security and stability update.''
* Fixed several security issues
* Fixed several stability issues<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/3.5.19/releasenotes/ |title=Mozilla Firefox 3.5.19 Release Notes |publisher=Mozilla |date=April 28, 2011 |accessdate=April 22, 2012}}</ref>
|-


=== Firefox 52 through 59 ===
| style="vertical-align:top;" rowspan="36" | ''']'''
{{plain image with caption|Firefox Logo, 2017.svg|Logo used from Firefox 57 to Firefox 69|150px}}
| style="vertical-align:top;" rowspan="36" | 1.9.2
Firefox 52 and Firefox 52 ESR were released on March 7, 2017. An important aspect of Firefox ESR 52.0 is that it is the first ESR version based on the ] (Firefox 48) code base. Firefox 52 added support for ] (while disabled in Firefox ESR 52), an emerging standard that brings near-native performance to Web-based games, apps, and software libraries without the use of plugins, automatic ] detection for easier access to Wi-Fi hotspots, and user warnings for insecure HTTP pages with logins.<ref name="Firefox 52.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/52.0/releasenotes/ |title=Firefox Release Notes (52.0) |website=Mozilla |date=March 7, 2017 |access-date=March 7, 2017 |archive-date=March 7, 2017 |archive-url=https://web.archive.org/web/20170307174930/https://www.mozilla.org/en-US/firefox/52.0/releasenotes/ |url-status=live }}</ref> Firefox 52 dropped support for ] plugins like ] and Java with the exception of Adobe Flash Player (except the ESR version which still supports NPAPI).<ref>{{cite web |url=https://www.java.com/en/download/help/firefox_java.html |title=Java plugin does not work in Firefox |website=java.com |access-date=September 17, 2021 |archive-date=September 17, 2021 |archive-url=https://web.archive.org/web/20210917223514/https://www.java.com/en/download/help/firefox_java.html |url-status=live }}</ref>
| style="background:pink;" | 3.6a1
| ''Namoroka Alpha 1''
| August 7, 2009
| ''First Firefox 3.6 alpha release.''
* Compositor (Phase 1), which moves Gecko to using one native widget per top-level content document.
* A new focus model.
* The chromedir attribute has been replaced with a pseudoclass.
* Several new CSS3 properties including background size and gradients for background images.
* Speed improvements to the TraceMonkey JavaScript engine.
* Startup and responsiveness improvements throughout the application.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/08/07/firefox-3-6-alpha-1-now-available-for-download/ |title=Mozilla Firefox 3.6 Alpha 1 Release Announcement |publisher=Mozilla Developer News |date=2009-08-07 |accessdate=2011-07-10}}</ref>
|-


Firefox 53 was released on April 19, 2017. Starting with Firefox 53, Microsoft Windows support is exclusively for ] and above. Other major changes included improved graphics stability for Windows users with the addition of compositor process separation, the addition of light and dark "compact" themes based on the themes included with Firefox Developer Edition, the removal of support for 32-bit macOS and Linux for processors older than the ] and ] processors, a new visual design for audio and video controls, support for ] video with ], which allows playing videos with transparent backgrounds, and support for displaying estimated reading time for pages in Reader Mode.<ref name="Firefox 53.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/53.0/releasenotes/ |title=Firefox Release Notes (53.0) |website=Mozilla |date=April 19, 2017 |access-date=April 19, 2017 |archive-date=April 20, 2017 |archive-url=https://web.archive.org/web/20170420035526/https://www.mozilla.org/en-US/firefox/53.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.6b1
| ''Firefox 3.6 Beta 1''
| October 30, 2009
| ''First Firefox 3.6 beta release.'' Users can now change their browser’s appearance with a single click, with built in support for Personas. Firefox 3.6 will alert users about out of date plugins to keep them safe. Open, native video can now be displayed full screen, and supports poster frames. Support for the WOFF font format. Improved JavaScript performance, overall browser responsiveness and startup time. Support for new CSS, DOM and HTML5 web technologies.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/10/30/firefox-3-6-beta-1-is-now-available-for-download/ |title=Mozilla Firefox 3.6 Beta 1 Release Announcement |publisher=Mozilla Developer News |date=2009-10-30 |accessdate=2011-07-10}}</ref>
|-


Firefox 54 was released on June 13, 2017. Major changes included simplifying the download button and download status ], support for multiple content processes, the ability to create and save custom devices in ] mode, and improved audio and video playback in the browser.<ref name="Firefox 54.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/54.0/releasenotes/ |title=Firefox Release Notes (54.0) |website=Mozilla |date=June 13, 2017 |access-date=June 13, 2017 |archive-date=June 14, 2017 |archive-url=https://web.archive.org/web/20170614062603/https://www.mozilla.org/en-US/firefox/54.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.6b2
| ''Firefox 3.6 Beta 2''
| November 10, 2009
| ''Second Firefox 3.6 beta release.'' A mechanism to prevent incompatible software from crashing Firefox.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/11/11/firefox-3-6-beta-revision-2-update-published/ |title=Mozilla Firefox 3.6 Beta 2 Release Announcement |publisher=Mozilla Developer News |date=2009-11-11 |accessdate=2011-07-10}}</ref>
|-


Firefox 55 was released on August 8, 2017. Major changes included the launch of Windows support for ], options that let users optimize recent performance improvements, simplification of the installation process with a streamlined Windows stub installer, improvements to address bar functionality, and simplified printing from Reader Mode.<ref name="Firefox 55.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/55.0/releasenotes/ |title=Firefox Release Notes (55.0) |website=Mozilla |date=August 8, 2017 |access-date=August 8, 2017 |archive-date=August 18, 2017 |archive-url=https://web.archive.org/web/20170818030704/https://www.mozilla.org/en-US/firefox/55.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.6b3
| ''Firefox 3.6 Beta 3''
| November 17, 2009
| ''Third Firefox 3.6 beta release.'' A change to how third-party software integrates with Firefox to increase stability. The ability to run scripts asynchronously to speed up page load times.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/11/18/firefox-beta-3-6-revision-3-now-available-for-download/ |title=Mozilla Firefox 3.6 Beta 3 Release Announcement |publisher=Mozilla Developer News |date=2009-11-18 |accessdate=2011-07-10}}</ref>
|-


Firefox 56 was released on September 28, 2017. Among the many additions are: a new layout for the "Preferences" page, the launch of Firefox Screenshots, support for address form autofill, hardware acceleration for AES-GCM, update of the Safe Browsing protocol to version 4, improved security or verifying update downloads, and improved support for WebExtensions.<ref name="Firefox 56.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/56.0/releasenotes/ |title=Firefox Release Notes (56.0) |website=Mozilla |date=September 28, 2017 |access-date=September 28, 2017 |archive-date=September 29, 2017 |archive-url=https://web.archive.org/web/20170929152720/https://www.mozilla.org/en-US/firefox/56.0/releasenotes/ |url-status=live }}</ref> Another change was the introduction of the ''mozlz4'' format, a proprietary variant of the ''lz4'' compression format (.mozlz4 and .jsonlz4 file extensions instead of .json.lz4 as per unix/linux standard). Session data is stored in the ''lz4'' format instead of plain text. Firefox 56 cannot recognize the legacy plain text session files, only the ''lz4''-encoded ones.
| style="background:pink;" | 3.6b4
| ''Firefox 3.6 Beta 4''
| November 26, 2009
| ''Fourth Firefox 3.6 beta release.'' Added support for the HTML5 File API.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/11/26/firefox-3-6-beta-revision-4-now-available-for-download/ |title=Mozilla Firefox 3.6 Beta 4 Release Announcement |publisher=Mozilla Developer News |date=2009-11-26 |accessdate=2011-07-10}}</ref>
|-


Firefox 57 was released on November 14, 2017, with the name ''Firefox Quantum''.<ref name="quantum">{{cite web |url=https://www.mozilla.org/en-US/firefox/quantum/ |title=2x faster and 30% less memory {{!}} Firefox Quantum Browser |website=Mozilla |language=en-US |access-date=2017-10-09 |archive-date=October 10, 2017 |archive-url=https://web.archive.org/web/20171010234705/https://www.mozilla.org/en-US/firefox/quantum/ |url-status=live }}</ref> ] dubbed it a "comeback" following years of falling market share against ].<ref name="cnet57">{{cite news |url=https://www.cnet.com/special-reports/mozilla-firefox-fights-back-against-google-chrome/ |title=Inside Mozilla: Firefox fights back |date=2017-08-04 |access-date=2017-10-09 |archive-date=August 3, 2017 |archive-url=https://web.archive.org/web/20170803165258/https://www.cnet.com/special-reports/mozilla-firefox-fights-back-against-google-chrome/ |url-status=live }}</ref><ref>{{cite news |url=https://www.zdnet.com/article/why-you-should-root-for-mozillas-firefox-57-in-the-browser-wars/ |title=Why you should root for Mozilla's Firefox 57 in the browser wars |last=Dignan |first=Larry |website=ZDNet |date=2017-08-06 |access-date=2017-10-09 |archive-date=December 11, 2017 |archive-url=https://web.archive.org/web/20171211021103/https://www.zdnet.com/article/why-you-should-root-for-mozillas-firefox-57-in-the-browser-wars/ |url-status=live }}</ref> The release included a new interface design, codenamed "Photon", and a new rendering engine almost twice as fast as the previous one used.<ref name="quantum" /><ref name="cnet57" /><ref>{{cite news |url=https://www.cnet.com/news/mozilla-replacing-swoopy-firefox-tabs-with-rectangular-shape/ |title=Firefox's new rectangular tabs sweep away browser's curvy look |website=CNET |date=2017-08-03 |access-date=2017-10-09 |language=en |archive-date=October 9, 2017 |archive-url=https://web.archive.org/web/20171009200817/https://www.cnet.com/news/mozilla-replacing-swoopy-firefox-tabs-with-rectangular-shape/ |url-status=live }}</ref> One of the largest visual changes in Photon was the removal of the search box from the address bar. Firefox 57 no longer supports ''legacy add-ons'' using ] technologies.<ref name="Firefox Firefox 57 Addons">{{cite web |url=https://blog.mozilla.org/addons/2017/08/10/upcoming-changes-compatibility/ |title=Upcoming Changes in Compatibility Features |website=Mozilla Add-ons Blog |date=August 10, 2017 |language=en-US |access-date=2017-10-24 |archive-date=December 26, 2017 |archive-url=https://web.archive.org/web/20171226113447/https://blog.mozilla.org/addons/2017/08/10/upcoming-changes-compatibility/ |url-status=live }}</ref><ref name="Firefox 57.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/57.0/releasenotes/ |title=Firefox Release Notes (57.0) |website=Mozilla |date=November 14, 2017 |access-date=November 14, 2017 |archive-date=November 14, 2017 |archive-url=https://web.archive.org/web/20171114194520/https://www.mozilla.org/en-US/firefox/57.0/releasenotes/ |url-status=live }}</ref> That same day, Mozilla announced that ] would be the default search engine in the US and Canada, a departure from ], which had been the default search engine in the US and Canada since 2014.<ref>{{cite news |url=https://techcrunch.com/2017/11/14/mozilla-terminates-its-deal-with-yahoo-and-makes-google-the-default-in-firefox-again/ |title=Mozilla terminates its deal with Yahoo and makes Google the default in Firefox again |last=Lardinois |first=Frederic |website=TechCrunch |access-date=2017-11-15 |language=en |archive-date=November 14, 2017 |archive-url=https://web.archive.org/web/20171114211602/https://techcrunch.com/2017/11/14/mozilla-terminates-its-deal-with-yahoo-and-makes-google-the-default-in-firefox-again/ |url-status=live }}</ref>
| style="background:pink;" | 3.6b5
| ''Firefox 3.6 Beta 5''
| December 17, 2009
| ''Fifth Firefox 3.6 beta release.''<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2009/12/17/firefox-3-6-beta-revision-5-now-available-for-download/ |title=Mozilla Firefox 3.6 Beta 5 Release Announcement |publisher=Mozilla Developer News |date=2009-12-17 |accessdate=2011-07-10}}</ref>
|-


Firefox 58 was released on January 23, 2018. Among the additions were: support for credit card autofill, the drop of support for user profiles in previous versions of Firefox, a warning to alert users and site owners of planned security changes to sites affected by the gradual distrust plan for the Symantec certificate authority, full screen bookmark management with folder support, support for FLAC (Free Lossless Audio Codec) playback, and the ability to change the status bar color in themes.<ref name="Firefox 58.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/58.0/releasenotes/ |title=Firefox Release Notes (58.0) |website=Mozilla |date=January 23, 2018 |access-date=January 23, 2018 |archive-date=January 23, 2018 |archive-url=https://web.archive.org/web/20180123152615/https://www.mozilla.org/en-US/firefox/58.0/releasenotes/ |url-status=live }}</ref>
| style="white-space:nowrap; background:pink;" | 3.6 RC1
| ''Firefox 3.6 <br /> Release Candidate 1''
| January 8, 2010
| ''First Firefox 3.6 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6rc1/releasenotes/ |title=Mozilla Firefox 3.6 Release Candidate 1 Release Notes |publisher=Mozilla |date=2009-01-08 |accessdate=2011-07-10}}</ref>
|-


Firefox 59 was released on March 13, 2018. Among the additions were: faster load times and improved graphics, improved Real-Time Communications (RTC) capabilities, additional features for Firefox Screenshots, support for W3C specs for pointer events, Private Browsing Mode's removal of path information from referrers to prevent cross-site tracking, and the addition of Firefox as an Assist app, and support for HLS (HTTP Live Streaming) playback for improved compatibility with video sites.<ref name="Firefox 59.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/59.0/releasenotes/ |title=Firefox Release Notes (59.0) |website=Mozilla |date=March 13, 2018 |access-date=March 13, 2018 |archive-date=September 9, 2019 |archive-url=https://web.archive.org/web/20190909035148/https://www.mozilla.org/en-US/firefox/59.0/releasenotes/ |url-status=live }}</ref>
| style="white-space:nowrap; background:pink;" | 3.6 RC2
| ''Firefox 3.6 <br /> Release Candidate 2''
| January 17, 2010
| ''Second Firefox 3.6 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6rc2/releasenotes/ |title=Mozilla Firefox 3.6 Release Candidate 2 Release Notes |publisher=Mozilla |date=2010-01-17 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 60 through 67 ===
| style="background:salmon;" | 3.6
<!-- these 'id' anchors are mainly for the convenience of editors who regularly add new information -- please move to table for 70+ when necessary -->
| ''Firefox 3.6 <br /><small>"]"</small>''
| January 21, 2010
| Official Firefox 3.6 release. <ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6/releasenotes/ |title=Mozilla Firefox 3.6 Release Notes |publisher=Mozilla |date=January 21, 2010 |accessdate=April 22, 2012}}</ref>
* Support for Persona themes
* Protection from out-of-date plugins to keep users safer as they browse.
* Open, native video can now be displayed full screen and supports poster frames.
* Improved JavaScript performance, overall browser responsiveness, and startup time.
* The ability for web developers to indicate that scripts should run asynchronously to speed up page load times.
* Continued support for downloadable web fonts using the new WOFF font format.
* Support for new CSS attributes such as gradients, background sizing, and pointer events.
* Support for new DOM and HTML5 specifications including the Drag & Drop API and the File API, which allow for more interactive web pages.
* Changes to how third-party software can integrate with Firefox in order to prevent crashes.
|-


Firefox 60 and Firefox 60 ESR were released on May 9, 2018. It includes a policy engine that allows customized Firefox deployments in enterprise environments, using Windows Group Policy or a cross-platform JSON file, enhancements to New Tab / Firefox Home, a redesigned Cookies and Site Storage section in Preferences for greater clarity and control of first- and third-party cookies, the application of Quantum CSS to render browser UI, support for Web Authentication API, which allows USB tokens for website authentication, an option for Linux users to show or hide page titles in a bar at the top of the browser, improved WebRTC audio performance and playback for Linux users, and exclusive support for extensions built using the WebExtension API (ESR).<ref name="Firefox 60.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0/releasenotes/ |title=Firefox Release Notes (60.0) |website=Mozilla |date=May 9, 2018 |access-date=May 9, 2018 |archive-date=May 9, 2018 |archive-url=https://web.archive.org/web/20180509230339/https://www.mozilla.org/en-US/firefox/60.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 60.0esr">{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0esr/releasenotes/ |title=Firefox Release Notes (60.0esr) |website=Mozilla |date=May 9, 2018 |access-date=May 9, 2018 |archive-date=May 10, 2018 |archive-url=https://web.archive.org/web/20180510050446/https://www.mozilla.org/en-US/firefox/60.0esr/releasenotes/ |url-status=live }}</ref>
| style="white-space:nowrap;background:salmon;" | 3.6.2<ref group="t">There was no version 3.6.1.</ref>
|
| March 22, 2010
| Security and stability update.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.2/releasenotes/ |title=Mozilla Firefox 3.6.2 Release Notes |publisher=Mozilla |date=2010-03-22 |accessdate=2011-07-10}}</ref>
|-


Firefox 61 was released on June 26, 2018. Among the many additions were: Improvements for dark theme support across the entire Firefox user interface, added support to allow WebExtensions to hide tabs, improved bookmark syncing, convenient access to more search engines, improved security and enhanced performance.<ref name="Firefox 61.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/61.0/releasenotes/ |title=Firefox Release Notes (61.0) |website=Mozilla |date=June 26, 2018 |access-date=June 26, 2018 |archive-date=July 3, 2018 |archive-url=https://web.archive.org/web/20180703101804/https://www.mozilla.org/en-US/firefox/61.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.3
|
| April 1, 2010
| Quick turn-around security update.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.3/releasenotes/ |title=Mozilla Firefox 3.6.3 Release Notes |publisher=Mozilla |date=2010-04-01 |accessdate=2011-07-10}}</ref>
|-


Firefox 62 was released on September 5, 2018. Among the many additions were: FreeBSD support for WebAuthn, a preference that allows users to distrust certificates issued by Symantec in advance of removing all trust for Symantec-issued certificates in Firefox 63, improved graphics rendering for Windows users without accelerated hardware using Parallel-Off-Main-Thread Painting, CSS Variable Fonts (OpenType Font Variations) support, support for CSS Shapes, allowing for richer web page layouts, improved scrolling performance, and faster page load times over Wi-Fi connections by loading from the network cache if disk cache is slow.<ref name="Firefox 62.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/62.0/releasenotes/ |title=Firefox 62.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 5, 2018 |access-date=September 5, 2018 |archive-date=September 5, 2018 |archive-url=https://web.archive.org/web/20180905131900/https://www.mozilla.org/en-US/firefox/62.0/releasenotes/ |url-status=live }}</ref> The bookmarks' Description field was deprecated and will be removed completely in future releases.
| style="background:pink;" | 3.6.3plugin1
| ''Firefox 3.6.3plugin1 <br /><small>"Lorentz"</small>''
| April 8, 2010
| ''First Firefox "Lorentz" beta, followed by 7 more Firefox 3.6.4 pre-release builds, all codenamed "Lorentz".''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.3plugin1/releasenotes/ |title=Mozilla Firefox Lorentz Release Notes |publisher=Mozilla |date=2010-04-08 |accessdate=2011-07-10}}</ref>
|-


Firefox 63 was released on October 23, 2018. Among the many additions and changes were: Performance and visual improvements for Windows and macOS users, content blocking, WebExtensions running in their own process in Linux, recognition of the operating system accessibility setting for reducing animation, the addition of ] and ] as Top Sites tiles on the Firefox Home (New Tab) page, and the removal of the "Never Check for Updates" option from "about:preferences" and the "Open in Sidebars" feature from the Library.<ref name="Firefox 63.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/63.0/releasenotes/ |title=Firefox 63.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 23, 2018 |access-date=October 23, 2018 |archive-date=October 23, 2018 |archive-url=https://web.archive.org/web/20181023141209/https://www.mozilla.org/en-US/firefox/63.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.4
| ''Firefox 3.6.4 (OOPP) <br /><small>"]"</small>''
| June 22, 2010
| Regular security and stability update, including OOPP.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.4/releasenotes/ |title=Mozilla Firefox 3.6.4 Release Notes |publisher=Mozilla |date=2010-06-22 |accessdate=2011-07-10}}</ref>
|-


Firefox 64 version 64.0 was released on December 11, 2018. Firefox 64 for desktop provides better recommendations, enhanced tab management, easier performance management, improved performance for Mac and Linux users by enabling link time optimization (Clang LTO), more seamless sharing on Windows, the option to remove add-ons using the context menu on their toolbar buttons, TLS certificates issued by Symantec that are no longer trusted by Firefox, and the availability of WebVR on macOS.<ref name="Firefox 64.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/64.0/releasenotes/ |title=Firefox 64.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 11, 2018 |access-date=December 11, 2018 |archive-date=December 11, 2018 |archive-url=https://web.archive.org/web/20181211143259/https://www.mozilla.org/en-US/firefox/64.0/releasenotes/ |url-status=live }}</ref>
| style="white-space:nowrap;background:salmon;" | 3.6.6<ref group="t">There was no version 3.6.5.</ref>
|
| June 26, 2010
| ''Off-cycle stability update.'' Modified crash protection feature to increase amount of time plugins allowed to be non-responsive before being terminated.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.6/releasenotes/ |title=Mozilla Firefox 3.6.6 Release Notes |publisher=Mozilla |date=2010-06-26 |accessdate=2011-07-10}}</ref>
|-


Firefox 65 was released on January 29, 2019. Among the many additions and changes were: improved performance and web compatibility, with support for the ] image format, enhanced security for macOS, Linux, and Android users via stronger stack smashing protection which is now enabled by default for all platforms (both desktop and Android), enhanced tracking protection, updated language settings in Preferences, support for Handoff on macOS, a better video streaming experience for Windows users, easier performance management, an improved pop-up blocker, the availability of Firefox for Windows with 32- and 64-bit MSI installers for easier enterprise deployments, and additional support for Flexbox.<ref name="Firefox 65.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/65.0/releasenotes/ |title=Firefox 65.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 29, 2019 |access-date=January 29, 2019 |archive-date=January 30, 2019 |archive-url=https://web.archive.org/web/20190130174425/https://www.mozilla.org/en-US/firefox/65.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.7
|
| July 20, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.7/releasenotes/ |title=Mozilla Firefox 3.6.7 Release Notes |publisher=Mozilla |date=2010-07-20 |accessdate=2011-07-10}}</ref>
|-


Firefox 66 was released on March 19, 2019. Among the many additions and changes were: Prevention of websites from automatically playing sound, smoother scrolling (both), an improved search experience and performance and better user experience for extensions, the addition of basic support for macOS Touch Bar and of support for Windows Hello on Windows 10, along with the enabling of AV1 support on 32-bit Windows and macOS.<ref name="Firefox 66.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/66.0/releasenotes/ |title=Firefox 66.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 19, 2019 |access-date=March 21, 2019 |archive-date=March 19, 2019 |archive-url=https://web.archive.org/web/20190319134608/https://www.mozilla.org/en-US/firefox/66.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.8
|
| July 23, 2010
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.8/releasenotes/ |title=Mozilla Firefox 3.6.8 Release Notes |publisher=Mozilla |date=2010-07-23 |accessdate=2011-07-10}}</ref>
|-


Firefox 67 was released on May 21, 2019. Major changes included lowering priority of setTimeout during page load, suspending (unloading) unused tabs to clear ], the ability to block known ]s and ]ers in the Custom settings of the Content Blocking preferences, improvements to keyboard accessibility, usability and security improvements in Private Browsing, and protection against running older versions of the browser which can lead to data corruption and stability issues.<ref name="Firefox 67.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/67.0/releasenotes/ |title=Firefox 67.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 21, 2019 |access-date=May 21, 2019 |archive-date=May 22, 2019 |archive-url=https://web.archive.org/web/20190522004355/https://www.mozilla.org/en-US/firefox/67.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.9
|
| September 7, 2010
| ''Regular security and stability update.'' Also added support for <code>X-FRAME-OPTIONS</code> HTTP response header to help prevent ] and removed option to enable experimental HTML5 parser via user preference html5.enable in about:config.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.9/releasenotes/ |title=Mozilla Firefox 3.6.9 Release Notes |publisher=Mozilla |date=2010-09-07 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 68 through 77 ===
| style="background:salmon;" | 3.6.10
<!-- anchor is for convenience of editors who regularly add new information -- please move to table for 80+ when necessary -->
|
| September 15, 2010
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.10/releasenotes/ |title=Mozilla Firefox 3.6.10 Release Notes |publisher=Mozilla |date=2010-09-15 |accessdate=2011-07-10}}</ref>
|-


{{plain image with caption|Firefox logo, 2019.svg|Logo used from Firefox 70|150px}}
| style="background:salmon;" | 3.6.11
Firefox 68 and Firefox 68 ESR were released on July 9, 2019. Among the many additions were: Expansion of Dark Mode in Reader view, a new reporting feature in <nowiki>about:addons</nowiki>, cryptomining and fingerprinting protections, WebRender for Windows 10, Windows Background Intelligent Transfer Service (BITS) update download support, user and enterprise added certificates read from the OS by default (68 ESR), improved web page painting performance by avoiding redundant calculations during paint, and introduction of WebAuthn (the Web Authentication API, Android).<ref name="Firefox 68.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/68.0/releasenotes/ |title=Firefox 68.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 9, 2019 |access-date=July 9, 2019 |archive-date=July 11, 2019 |archive-url=https://web.archive.org/web/20190711051437/https://www.mozilla.org/en-US/firefox/68.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 68.0esr">{{cite web |url=https://www.mozilla.org/en-US/firefox/68.0esr/releasenotes/ |title=Firefox ESR 68.0esr, See All New Features, Updates and Fixes |website=Mozilla |date=July 9, 2019 |access-date=July 9, 2019 |archive-date=July 9, 2019 |archive-url=https://web.archive.org/web/20190709151259/https://www.mozilla.org/en-US/firefox/68.0esr/releasenotes/ |url-status=live }}</ref><ref name="Firefox 68.0 Mobile">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/68.0/releasenotes/ |title=Firefox for Android 68.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 9, 2019 |access-date=July 9, 2019 |archive-date=November 7, 2020 |archive-url=https://web.archive.org/web/20201107235345/https://www.mozilla.org/en-US/firefox/android/68.0/releasenotes/ |url-status=live }}</ref>
|
| October 19, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.11/releasenotes/ |title=Mozilla Firefox 3.6.11 Release Notes |publisher=Mozilla |date=2010-10-19 |accessdate=2011-07-10}}</ref>
|-


Firefox 69 was released on September 3, 2019. Among the additions were: Enhanced Tracking Protection, the Block Autoplay feature, support for the Web Authentication HmacSecret extension via Windows Hello for versions of Windows 10 May 2019 or newer, support for receiving multiple video codecs, JIT support for ARM64, and improvements for download UI, performance (Windows 10), and battery life (macOS).<ref name="Firefox 69.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/69.0/releasenotes/ |title=Firefox 69.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 3, 2019 |access-date=September 4, 2019 |archive-date=September 14, 2019 |archive-url=https://web.archive.org/web/20190914142545/https://www.mozilla.org/en-US/firefox/69.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.12
|
| October 27, 2010
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.12/releasenotes/ |title=Mozilla Firefox 3.6.12 Release Notes |publisher=Mozilla |date=2010-10-27 |accessdate=2011-07-10}}</ref>
|-


], displaying the main page of ]]]
| style="background:salmon" | 3.6.13
|
| December 9, 2010
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.13/releasenotes/ |title=Mozilla Firefox 3.6.13 Release Notes |publisher=Mozilla |date=2010-12-09 |accessdate=2011-07-10}}</ref>
|-


Firefox 70 was released on October 22, 2019. Among the additions were: more privacy protection from Enhanced Tracking Protection, more security protection from Firefox Lockwise, improvements to core engine components for better browsing on more sites, a stand-alone Firefox account menu for easy access to Firefox services like Monitor and Send, the dark mode preference for built-in Firefox pages, and inactive CSS.<ref name="Firefox 70.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/70.0/releasenotes/ |title=Firefox 70.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 22, 2019 |access-date=October 22, 2019 |archive-date=October 21, 2019 |archive-url=https://web.archive.org/web/20191021225352/https://www.mozilla.org/en-US/firefox/70.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon" | 3.6.14
|
| March 1, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.14/releasenotes/ |title=Mozilla Firefox 3.6.14 Release Notes |publisher=Mozilla |date=2011-03-01 |accessdate=2011-07-10}}</ref>
|-


Firefox 71 was released on December 3, 2019. Among the additions were: improvements to the integrated password manager Lockwise, more information about Enhanced Tracking Protection in action, picture-in-picture for Windows, and native MP3 decoding on Windows, Linux, and macOS.<ref name="Firefox 71.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/71.0/releasenotes/ |title=Firefox 71.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 3, 2019 |access-date=December 3, 2019 |archive-date=December 3, 2019 |archive-url=https://web.archive.org/web/20191203141353/https://www.mozilla.org/en-US/firefox/71.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.15
|
| March 4, 2011
| ''Off-cycle stability update.'' Fixed issue where some Java applets failed to load in Firefox 3.6.14.<ref>{{cite web|url=http://www.mozilla.com/en-US/firefox/3.6.15/releasenotes|archiveurl=https://web.archive.org/web/20110714122932/https://www.mozilla.com/en-US/firefox/3.6.15/releasenotes/ |archivedate=July 14, 2011 |title=Mozilla Firefox 3.6.15 Release Notes |publisher=Mozilla |date=2011-03-04|accessdate=2011-07-10}}</ref>
|-


Firefox 72 was released on January 7, 2020. Among the additions were: the replacement of notification request pop-ups, the ETP blocking fingerprinting scripts by default, the availability of picture-in-picture video for macOS and Linux, and the removal of support for blocking images from individual domains because of low usage and poor user experience.<ref name="Firefox 72.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/72.0/releasenotes/ |title=Firefox 72.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 7, 2020 |access-date=January 7, 2020 |archive-date=January 7, 2020 |archive-url=https://web.archive.org/web/20200107143038/https://www.mozilla.org/en-US/firefox/72.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.16
|
| March 22, 2011
| ''Off-cycle security update.'' Blacklisted several invalid HTTPS certificates.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.16/releasenotes/ |title=Mozilla Firefox 3.6.16 Release Notes |publisher=Mozilla |date=2011-03-22 |accessdate=2011-07-10}}</ref>
|-


Firefox 73 was released on February 11, 2020. Among the additions were: a new global default zoom level setting, a "readability backplate" solution which places a block of background color between the text and background image, improved audio quality when playing back audio at a faster or slower speed, a prompt to save logins if a field in a login form was modified, and rolling out WebRender to laptops with Nvidia graphics cards with drivers newer than 432.00, and screen sizes smaller than 1920x1200.<ref name="Firefox 73.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/73.0/releasenotes/ |title=Firefox 73.0, See All New Features, Updates and Fixes |website=Mozilla |date=February 11, 2020 |access-date=February 11, 2020 |archive-date=February 11, 2020 |archive-url=https://web.archive.org/web/20200211144957/https://www.mozilla.org/en-US/firefox/73.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.17
|
| April 28, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.17/releasenotes/ |title=Mozilla Firefox 3.6.17 Release Notes |publisher=Mozilla |date=2011-04-28 |accessdate=2011-07-10}}</ref>
|-


Firefox 74 was released on March 10, 2020. Additions included: improvement of login management with the ability to reverse alpha sort (Name Z-A) in Lockwise, simple importing of bookmarks and history from ] on Windows and Mac, use of Add-ons Manager to remove add-ons installed by external applications, ] Container, which prevents Facebook from tracking across the web, and support for mDNS ICE.<ref name="Firefox 74.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/74.0/releasenotes/ |title=Firefox 74.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 10, 2020 |access-date=March 10, 2020 |archive-date=March 10, 2020 |archive-url=https://web.archive.org/web/20200310130003/https://www.mozilla.org/en-US/firefox/74.0/releasenotes/ |url-status=live }}</ref> Initially, this release was also the first with ] disabled. However, out of concern for access to information during the ], this change was rolled back.<ref name="TLS 1.0 and TLS 1.1">{{cite web |last1=van der Merwe |first1=Thyla |title=It's the Boot for TLS 1.0 and TLS 1.1 |url=https://hacks.mozilla.org/2020/02/its-the-boot-for-tls-1-0-and-tls-1-1/ |website=Mozilla Hacks |access-date=31 March 2020 |date=23 March 2020 |archive-date=April 4, 2020 |archive-url=https://web.archive.org/web/20200404054814/https://hacks.mozilla.org/2020/02/its-the-boot-for-tls-1-0-and-tls-1-1/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.18
|
| June 21, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.18/releasenotes/ |title=Mozilla Firefox 3.6.18 Release Notes |publisher=Mozilla |date=2011-06-21 |accessdate=2011-07-10}}</ref>
|-


Firefox 75 was released on April 7, 2020. Additions included: a number of improvements with Firefox's revamped address bar, the local cache of all trusted Web PKI Certificate Authority certificates known to Mozilla, the availability of Firefox in Flatpak on Linux, and the integration of Direct Composition on Windows.<ref name="Firefox 75.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/75.0/releasenotes/ |title=Firefox 75.0, See All New Features, Updates and Fixes |website=Mozilla |date=April 7, 2020 |access-date=April 7, 2020 |archive-date=April 7, 2020 |archive-url=https://web.archive.org/web/20200407130224/https://www.mozilla.org/en-US/firefox/75.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.19
|
| July 11, 2011
| ''Off-cycle stability update.'' Turned off downloadable font support for users running Mac OS X 10.7 due to an underlying platform bug. No changes made on Windows side.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.19/releasenotes/ |title=Mozilla Firefox 3.6.19 Release Notes |publisher=Mozilla |date=2011-07-11 |accessdate=2011-07-12}}</ref>
|-


Firefox 76 was released on May 5, 2020. Additions included: strengthened protections for online account logins and passwords, with innovative approaches to managing accounts during this critical time, allowing multitasking in Picture-in-Picture, support for Audio Worklets that will allow more complex audio processing like VR and gaming on the web, and two updates to the address bar improving its usability and visibility.<ref name="Firefox 76.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/76.0/releasenotes/ |title=Firefox 76.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 5, 2020 |access-date=May 5, 2020 |archive-date=May 5, 2020 |archive-url=https://web.archive.org/web/20200505133200/https://www.mozilla.org/en-US/firefox/76.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.20
|
| August 16, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.20/releasenotes/ |title=Mozilla Firefox 3.6.20 Release Notes |publisher=Mozilla |date=2011-08-16 |accessdate=2011-08-16}}</ref>
|-


Firefox 77 was released on June 2, 2020. Additions included: pocket recommendations on Firefox' new tab for UK users, a new <nowiki>about:certificate</nowiki> page, and the removal of the <nowiki>browser.urlbar.oneOffSearches</nowiki> preference.<ref name="Firefox 77.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/77.0/releasenotes/ |title=Firefox 77.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 2, 2020 |access-date=June 2, 2020 |archive-date=June 2, 2020 |archive-url=https://web.archive.org/web/20200602120939/https://www.mozilla.org/en-US/firefox/77.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.21
|
| August 30, 2011
| ''Off-cycle security update.'' Blacklisted a compromised HTTPS certificate.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.21/releasenotes/ |title=Mozilla Firefox 3.6.21 Release Notes |publisher=Mozilla |date=2011-08-30 |accessdate=2011-08-31}}</ref>
|-


=== Firefox 78 through 90 ===
| style="background:salmon;" | 3.6.22
<!-- Section uses wikis to predict when new releases will come out-->
|
| September 6, 2011
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.22/releasenotes/ |title=Mozilla Firefox 3.6.22 Release Notes |publisher=Mozilla |date=2011-09-06 |accessdate=2011-09-06}}</ref>
|-


Firefox 78 and Firefox 78 ESR were released on June 30, 2020. Among the many additions were: the Protections Dashboard, the addition of the Refresh button to the Uninstaller, a new WebRender rolled out to Windows users with Intel GPUs, the addition of Pocket Recommendations to users in the UK, the requirement of GNU libc 2.17, libstdc++ 4.8.1 and GTK+ 3.14 or newer versions on ], the disabling of TLS 1.0 and 1.1 and other improvements, and the addition of Kiosk Mode, client certificates, Service Worker and Push APIs, the Block Autoplay feature, picture-in-picture support, and the management of web certificates in about:certificate in 78 ESR.<ref name="Firefox 78.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/78.0/releasenotes/ |title=Firefox 78.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 30, 2020 |access-date=June 30, 2020 |archive-date=June 30, 2020 |archive-url=https://web.archive.org/web/20200630133108/https://www.mozilla.org/en-US/firefox/78.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 78.0esr">{{cite web |url=https://www.mozilla.org/en-US/firefox/78.0esr/releasenotes/ |title=Firefox ESR 78.0esr, See All New Features, Updates and Fixes |website=Mozilla |date=June 30, 2020 |access-date=June 30, 2020 |archive-date=June 30, 2020 |archive-url=https://web.archive.org/web/20200630210339/https://www.mozilla.org/en-US/firefox/78.0esr/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.23
|
| September 27, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.23/releasenotes/ |title=Mozilla Firefox 3.6.23 Release Notes |publisher=Mozilla |date=2011-09-27 |accessdate=2011-09-27}}</ref>
|-


Firefox 79 was released on July 28, 2020. Among the many additions were: a new WebRender rolled out to Windows users with Intel and AMD GPUs, the addition of Pocket Recommendations to users in Germany, the fixes for several crashes while using a screen reader, and updates to the password policy, the enabling of Enhanced Tracking Protection by default, and the ability to switch to Dark Mode.<ref name="Firefox 79.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/79.0/releasenotes/ |title=Firefox 79.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 28, 2020 |access-date=July 28, 2020 |archive-date=July 28, 2020 |archive-url=https://web.archive.org/web/20200728125744/https://www.mozilla.org/en-US/firefox/79.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.24
|
| November 8, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.24/releasenotes/ |title=Mozilla Firefox 3.6.24 Release Notes |publisher=Mozilla |date=2011-11-08 |accessdate=2011-11-10}}</ref>
|-


Firefox 80 was released on August 25, 2020, for desktop. Among the many additions were: the setting as the default system PDF viewer, the new add-ons blocklist enabled to improve performance and scalability, support for RTX and Transport-cc for improved call quality in poor network conditions and better bandwidth estimation and better compatibility with many websites using WebRTC.<ref name="Firefox 80.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/80.0/releasenotes/ |title=Firefox 80.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 25, 2020 |access-date=August 25, 2020 |archive-date=August 25, 2020 |archive-url=https://web.archive.org/web/20200825065746/https://www.mozilla.org/en-US/firefox/80.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 80.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/80.0/releasenotes/ |title=Firefox for Android 80.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 31, 2020 |access-date=September 3, 2020 |archive-date=November 2, 2020 |archive-url=https://web.archive.org/web/20201102122616/https://www.mozilla.org/en-US/firefox/android/80.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.25
|
| December 20, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.25/releasenotes/ |title=Mozilla Firefox 3.6.25 Release Notes |publisher=Mozilla |date=2011-12-20 |accessdate=2011-12-22}}</ref>
|-


Firefox 81 was released on September 22, 2020. Among the many additions were: the ability to pause or play audio or video right from the keyboard or headset, the introduction of the Alpenglow theme, the ability to save, manage, and auto-fill credit card information for U.S. and Canada users, the support of Acroform, which allows users to fill in, print, and save supported PDF forms, the automatic revelation of the Bookmarks toolbar, the expansion of <nowiki>.xml, .svg, and .webp</nowiki>, and fixes for browser native HTML audio/video controls.<ref name="Firefox 81.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/81.0/releasenotes/ |title=Firefox 81.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 22, 2020 |access-date=September 22, 2020 |archive-date=September 22, 2020 |archive-url=https://web.archive.org/web/20200922134317/https://www.mozilla.org/en-US/firefox/81.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.26
|
| January 31, 2012
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.26/releasenotes/ |title=Mozilla Firefox 3.6.26 Release Notes |publisher=Mozilla |date=2012-01-31 |accessdate=2012-01-31}}</ref>
|-


Firefox 82 was released on October 20, 2020. Changes included various changes to improve the video watching experience, improved page load and start up performance, saving a webpage to Pocket from the Firefox toolbar, and the ability to automatically purge cookies from sites not visited in 30 days.<ref name="Firefox 82.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/82.0/releasenotes/ |title=Firefox 82.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 20, 2020 |access-date=October 20, 2020 |archive-date=November 19, 2020 |archive-url=https://web.archive.org/web/20201119024730/https://www.mozilla.org/en-US/firefox/82.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 82.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/82.0/releasenotes/ |title=Firefox for Android 82.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 20, 2020 |access-date=October 24, 2020 |archive-date=October 27, 2020 |archive-url=https://web.archive.org/web/20201027011622/https://www.mozilla.org/en-US/firefox/android/82.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.27
|
| February 17, 2012
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.27/releasenotes/ |title=Mozilla Firefox 3.6.27 Release Notes |publisher=Mozilla |date=2012-02-17 |accessdate=2012-02-18}}</ref>
|-


Firefox 83 was released on November 17, 2020. Among the many additions were: significant updates to SpiderMonkey and JavaScript engine and replacement of the part of the JavaScript engine that helps to compile and display websites for the user, the introduction of the HTTPS-Only Mode, the support of pinch zooming for users with Windows touchscreen devices and touchpads on Mac devices, support of keyboard shortcuts for fast forwarding and rewinding videos in Picture-in-Picture, improved user interface, improved functionality and design for a number of Firefox search features, support of Acroform, and newly supported add-ons: FoxyProxy, Bitwarden, AdGuard AdBlocker, Tomato Clock, LeechBlock NG, and Web Archives.<ref name="Firefox 83.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/83.0/releasenotes/ |title=Firefox 83.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 17, 2020 |access-date=November 17, 2020 |archive-date=November 29, 2020 |archive-url=https://web.archive.org/web/20201129202653/https://www.mozilla.org/en-US/firefox/83.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 83.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/83.0/releasenotes/ |title=Firefox for Android 83.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 17, 2020 |access-date=November 17, 2020 |archive-date=November 17, 2020 |archive-url=https://web.archive.org/web/20201117170945/https://www.mozilla.org/en-US/firefox/android/83.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 3.6.28
|
| March 13, 2012
| ''Regular security and stability update.''
* Last release for Mac&nbsp;OS&nbsp;X Tiger and PowerPC Macs
* Added Out-of-process plugins<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.4/releasenotes/ |title=Mozilla Firefox 3.6.4 Release Notes |publisher=Mozilla |date=June 22, 2010 |accessdate=April 22, 2012}}</ref>
* Fixed several security issues
* Fixed several stability issues<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/3.6.28/releasenotes/ |title=Mozilla Firefox 3.6.28 Release Notes |publisher=Mozilla |date=March 13, 2012 |accessdate=April 22, 2012}}</ref>
''on April 24, 2012.''
|-


Firefox 84 was released on December 15, 2020. Among the many additions were: native support for macOS devices built with Apple silicon CPUs, the rollout of WebRender to MacOS Big Sur, Windows devices with Intel Gen 6 GPUs, and Intel laptops running Windows 7 and 8, and an accelerated rendering pipeline for Linux/GNOME/X11 users for the first time, the use of more modern techniques for allocating shared memory on Linux, improving performance and increasing compatibility with Docker, the option to view open tabs side by side in a grid view, the ability to delete downloaded files within the app, the rollout of WebRender to more users on the Mali-G GPU series.<ref name="Firefox 84.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/84.0/releasenotes/ |title=Firefox 84.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 15, 2020 |access-date=December 15, 2020 |archive-date=January 26, 2021 |archive-url=https://web.archive.org/web/20210126071444/https://www.mozilla.org/en-US/firefox/84.0/releasenotes/ |url-status=live }}</ref>
| style="vertical-align:top;" rowspan="22" | ''']'''
| style="vertical-align:top;" rowspan="6" | 1.9.3
| style="background:pink;" | 3.7a1
| ''Mozilla Developer Preview 3.7 Alpha 1''
| February 10, 2010
| ''First Firefox 3.7 alpha release.'' Support for WebGL(Disabled by default, but can be enabled by changing a preference). Support for new CSS, DOM and HTML5 web technologies.<ref>{{cite web |url=https://www.mozilla.org/projects/firefox/3.7a1/releasenotes/ |title=Mozilla Developer Preview Alpha 1 Release Notes |publisher=Mozilla |date=2010-02-10 |accessdate=2011-07-10 |deadurl=yes |archiveurl=https://web.archive.org/web/20100213161240/http://www.mozilla.org/projects/firefox/3.7a1/releasenotes/ |archivedate=February 13, 2010 |df=mdy-all }}</ref>
|-


Firefox 85 was released on January 26, 2021. Among the many additions were: protection from supercookies, a type of tracker that can stay hidden in the browser and track users online, even after they have cleared cookies, the ability to save and access bookmarks more easily, the ability of the password manager to have users remove all their saved logins with one click, as opposed to having to delete each login individually, the removal of ] support, and added support for the <nowiki>:focus-visible</nowiki> pseudo class.<ref name="Firefox 85.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/85.0/releasenotes/ |title=Firefox 85.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 26, 2021 |access-date=January 26, 2021 |archive-date=January 31, 2021 |archive-url=https://web.archive.org/web/20210131135832/https://www.mozilla.org/en-US/firefox/85.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 85.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/85.0/releasenotes/ |title=Firefox for Android 85.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 26, 2021 |access-date=January 26, 2021 |archive-date=January 26, 2021 |archive-url=https://web.archive.org/web/20210126163401/https://www.mozilla.org/en-US/firefox/android/85.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.7a2
| ''Mozilla Developer Preview 3.7 Alpha 2''
| March 3, 2010
| ''Second Firefox 3.7 alpha release.'' On Windows and Linux, plugins (such as Flash and Silverlight) are now isolated from Firefox. Plugin crashes will not kill Firefox itself, and unresponsive plugins are automatically restarted. The SSL security system has been changed to fix a renegotiation flaw. Link history lookup is now performed asynchronously on a thread. Loading the HTML5 specification no longer causes very long browser pauses. Some JavaScript engine improvements. The stop and reload buttons have been merged when they are adjacent on the toolbar. More performance and stability improvements.<ref>{{cite web|url=https://www.mozilla.org/projects/firefox/3.7a2/releasenotes/|archiveurl=https://web.archive.org/web/20100307142913/http://www.mozilla.org/projects/firefox/3.7a2/releasenotes/|archivedate=2010-03-07 |title=Mozilla Developer Preview Alpha 2 Release Notes |publisher=Mozilla |date=2010-03-03 |accessdate=2011-07-10}}</ref>
|-


Firefox 86 was released on February 23, 2021. Among the many additions were: added support for simultaneously watching multiple videos in Picture-in-Picture, improved Print functionality with a cleaner design and better integration with the computer's printer settings, credit card management and auto-fill for users in Canada, notable performance and stability improvements achieved by moving canvas drawing and WebGL drawing to the GPU process, the removal of DTLS 1.0 support or establishing WebRTC's PeerConnections, and the introduction of Total Cookie Protection to Strict Mode (both).<ref name="Firefox 86.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/86.0/releasenotes/ |title=Firefox 86.0, See All New Features, Updates and Fixes |website=Mozilla |date=February 23, 2021 |access-date=February 23, 2021 |archive-date=February 22, 2021 |archive-url=https://web.archive.org/web/20210222150939/https://www.mozilla.org/en-US/firefox/86.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 86.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/86.0/releasenotes/ |title=Firefox for Android 86.0, See All New Features, Updates and Fixes |website=Mozilla |date=February 23, 2021 |access-date=February 24, 2021 |archive-date=February 24, 2021 |archive-url=https://web.archive.org/web/20210224165920/https://www.mozilla.org/en-US/firefox/android/86.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.7a3
| ''Mozilla Developer Preview 3.7 Alpha 3''
| March 17, 2010
| ''Third Firefox 3.7 alpha release.'' An experimental Direct2D rendering backend on Windows is available, turned off by default. Significant API improvements are available for JS-ctypes. Mozilla now uses an infallible allocator. Additional fixes for multi-process plugins.<ref>{{cite web|url=https://www.mozilla.org/projects/firefox/3.7a3/releasenotes/|archiveurl=https://web.archive.org/web/20100329162050/http://www.mozilla.org/projects/firefox/3.7a3/releasenotes/|archivedate=2010-03-29 |title=Mozilla Developer Preview Alpha 3 Release Notes |publisher=Mozilla |date=2010-03-17 |accessdate=2011-07-10}}</ref>
|-


Firefox 87 was released on March 23, 2021. Among the many additions and removals were: the addition of SmartBlock, which provides stand-in scripts so that websites load properly, the new default HTTP Referrer policy (both), the improved "Highlight All" feature on Find in Page, full support for macOS built-in screen reader, VoiceOver, the disabling of the Backspace key as a navigation shortcut for the back navigation button, and the removal of Synced tabs, Recent highlights, and Pocket list from the Library menu, and the rollout of WebRender to more devices, with the following mobile GPUs now supported: Adreno 505, Adreno 506, Mali-T (Android).<ref name="Firefox 87.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/87.0/releasenotes/ |title=Firefox 87.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 23, 2021 |access-date=March 23, 2021 |archive-date=March 22, 2021 |archive-url=https://web.archive.org/web/20210322151931/https://www.mozilla.org/en-US/firefox/87.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 87.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/87.0/releasenotes/ |title=Firefox for Android 87.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 23, 2021 |access-date=April 20, 2021 |archive-date=April 20, 2021 |archive-url=https://web.archive.org/web/20210420030030/https://www.mozilla.org/en-US/firefox/android/87.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.7a4
| ''Mozilla Developer Preview 3.7 Alpha 4''
| April 12, 2010
| ''Fourth Firefox 3.7 alpha release.'' CSS :visited selectors have been changed to block ways that websites can quickly check a user's browsing history. Currently loaded web pages are shown in the location bar autocomplete list, allowing switching to existing tabs. The beta version of Adobe Flash is now run in a separate process on Mac OS X Snow Leopard (10.6). Full-screen video on Windows is now rendered using hardware acceleration when available. Mozilla has implemented the Core Animation rendering model for plugins on Mac OS X. Linux builds are now built with -fomit-frame-pointer. Support for new SVG and HTML5 web technologies.<ref>{{cite web|url=https://www.mozilla.org/projects/firefox/3.7a4/releasenotes/|archiveurl=https://web.archive.org/web/20100418160438/http://www.mozilla.org/projects/firefox/3.7a4/releasenotes/|archivedate=2010-04-18 |title=Mozilla Developer Preview Alpha 4 Release Notes |publisher=Mozilla |date=2010-04-12 |accessdate=2011-07-10}}</ref>
|-


Firefox 88 was released on April 19, 2021. Among the many additions and removals were: PDF forms supporting JavaScript embedded in PDF files, localized margin units, smooth pinch-zooming using a touchpad on Linux, isolation of <nowiki>window.name</nowiki> data to the website that created it, the removal of the "Take a Screenshot" feature from the Page Actions menu in the url bar, the disabling of FTP support and a new toggle button in the Network panel for switching between JSON formatted HTTP response and raw data.<ref name="Firefox 88.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/88.0/releasenotes/ |title=Firefox 88.0, See All New Features, Updates and Fixes |website=Mozilla |date=April 19, 2021 |access-date=April 20, 2021 |archive-date=April 28, 2021 |archive-url=https://web.archive.org/web/20210428125824/https://www.mozilla.org/en-US/firefox/88.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.7a4webm
| ''Mozilla Developer Preview 3.7 Alpha 4 WebM''
| May 19, 2010
| Added WebM video playback.
|-


Firefox 89 was released on June 1, 2021. Among the many additions and removals were: core experience redesigned and modernized to be cleaner, more inviting, and easier to use, simplified browser chrome and toolbar, clear, streamlined menus, updated prompts, inspired tab design, reduced number of alerts and messages, lighter iconography, a refined color palette, and more consistent styling throughout, enhancement of privacy of Private Browsing Mode with Total Cookie Protection, the introduction of the elastic overscroll effect known from many other applications for macOS users, added support for smart zoom, native context menus on macOS, Synced Tabs in the Tabs tray, support for the Event Timing API, and support for the CSS forced-colors media query (both).<ref name="Firefox 89.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/89.0/releasenotes/ |title=Firefox 89.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 1, 2021 |access-date=June 1, 2021 |archive-date=June 7, 2021 |archive-url=https://web.archive.org/web/20210607050657/https://www.mozilla.org/en-US/firefox/89.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 89.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/89.0/releasenotes/ |title=Firefox for Android 89.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 1, 2021 |access-date=June 1, 2021 |archive-date=June 5, 2021 |archive-url=https://web.archive.org/web/20210605143507/https://www.mozilla.org/en-US/firefox/android/89.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 3.7a5
| ''Mozilla Developer Preview 3.7 Alpha 5''
| June 14, 2010
| ''Fifth Firefox 3.7 alpha release.'' First official release to include linux-x86_64 and mac-x86_64 builds and first regular release to include ] video playback. New Addons Manager (placeholder UI only). Tab on Top can now be implemented. Firefox now uses hardware acceleration for video playback. Cocoa NPAPI support. ChromeWorker with jsctypes support. Lazy frame construction for faster dynamic pages. JavaScript performance improvements. Loading the URL about:memory now shows how much memory is used by different parts of Firefox. More Performance improvement and support for new CSS and HTML5 web technology.<ref>{{cite web|url=https://www.mozilla.org/projects/firefox/3.7a5/releasenotes/ |title=Mozilla Developer Preview Alpha 5 Release Notes |publisher=Mozilla |date=2010-06-14 |accessdate=2011-07-10 |deadurl=yes |archiveurl=https://web.archive.org/web/20110629211729/http://www.mozilla.org/projects/firefox/3.7a5/releasenotes/ |archivedate=June 29, 2011 }}</ref>
|-


Firefox 90 was released on July 13, 2021. Among the many additions and removals were: the application of updates in the background when Firefox is not running on Windows, a new page called <nowiki>about:third-party</nowiki> to help identify compatibility issues caused by third-party applications in Windows, the management of exceptions to HTTPS-Only mode in <nowiki>about:preferences#privacy</nowiki>, working hyperlinks in "Print to PDF", Version 2 of Firefox's SmartBlock feature, the addition of software WebRender for most users without its hardware accelerated version, improved software WebRender performance, removal of FTP support, support for Private Fields in DevTools, support for Fetch Metadata Request Headers, the ability to use client authentication certificates stored in hardware tokens or in Operating System storage, the ability to save, manage, and auto-fill credit card information for users shopping on Firefox, and Back/Forward Cache (aka BFCache) for webpages that use unload event listeners (Android).<ref name="Firefox 90.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/90.0/releasenotes/ |title=Firefox 90.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 13, 2021 |access-date=July 13, 2021 |archive-date=July 23, 2021 |archive-url=https://web.archive.org/web/20210723120623/https://www.mozilla.org/en-US/firefox/90.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 90.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/90.0/releasenotes/ |title=Firefox for Android 90.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 13, 2021 |access-date=July 13, 2021 |archive-date=July 13, 2021 |archive-url=https://web.archive.org/web/20210713191946/https://www.mozilla.org/en-US/firefox/android/90.0/releasenotes/ |url-status=live }}</ref>
| style="vertical-align:top;" rowspan="16" | 2.0
| style="vertical-align:top; background:pink;" | 4.0b1
| ''Firefox 4.0 Beta 1''
| July 6, 2010
| ''First Firefox 4.0 beta release.'' Tabs are now on top by default on Windows. On Windows Vista and Windows 7 the menu bar has been replaced with the Firefox button. The Bookmarks Toolbar has been replaced with a Bookmarks Button by default (you can switch it back if you'd like). Support for more HTML5 technologies.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/07/06/firefox-4-beta-1-tell-us-what-you-think/ |title=Mozilla Firefox 4.0 Beta 1 Release Announcement |publisher=The Mozilla Blog |date=2010-07-06 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 91 through 101 ===
| style="background:pink;" | 4.0b2
<!-- Section uses wikis to predict when new releases will come out-->
| ''Firefox 4.0 Beta 2''
Firefox 91 and Firefox 91 ESR were released on August 10, 2021. Among the many additions and removals were: a build on Total Cookie Protection, support for logging into Microsoft, work, and school accounts using Windows single sign-on, the return of the Simplify page when printing feature, the addition of a new Scots locale, the address bar providing Switch to Tab results in Private Browsing windows, the automatic enable of High Contrast Mode when "Increase Contrast" is checked on MacOS, catch-up paints for almost all user interactions, the support of Javascript embedded in PDF files, the addition of SmartBlock, protection from supercookies, support of AcroForm, the removal of support for Adobe Flash (ESR), a "Set Firefox as your default browser" message on notification pane for new installs, the addition of eBay Search to help users with their shopping needs, and default autoplay setting updated to Blocking Audio Only (Android).<ref name="Firefox 91.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/91.0/releasenotes/ |title=Firefox 91.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 10, 2021 |access-date=August 10, 2021 |archive-date=April 24, 2022 |archive-url=https://web.archive.org/web/20220424233317/https://www.mozilla.org/en-US/firefox/91.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 91.0esr">{{cite web |url=https://www.mozilla.org/en-US/firefox/91.0esr/releasenotes/ |title=Firefox 91.0esr, See All New Features, Updates and Fixes |website=Mozilla |date=August 10, 2021 |access-date=August 10, 2021 |archive-date=August 10, 2021 |archive-url=https://web.archive.org/web/20210810025658/https://www.mozilla.org/en-US/firefox/91.0esr/releasenotes/ |url-status=live }}</ref><ref name="Firefox 91.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/91.0/releasenotes/ |title=Firefox for Android 91.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 10, 2021 |access-date=August 10, 2021 |archive-date=August 12, 2021 |archive-url=https://web.archive.org/web/20210812083847/https://www.mozilla.org/en-US/firefox/android/91.0/releasenotes/ |url-status=live }}</ref>
| July 27, 2010
| ''Second Firefox 4.0 beta release.'' Tabs are now on top by default on OSX. App Tabs can now be created. Content animation using CSS Transitions can now be implemented. Responsiveness and scrolling improvements from the new retained layers layout system. JavaScript speed improvements due to engine optimizations. Changes to how XPCOM components are registered in order to help startup time and process separation.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/07/27/new-update-to-firefox-4-beta-available-now-in-23-languages/ |title=Mozilla Firefox 4.0 Beta 2 Release Announcement |publisher=The Mozilla Blog |date=2010-07-27 |accessdate=2011-07-10}}</ref>
|-


Firefox 92 was released on September 7, 2021. Among the many additions and removals were: an automatic upgrade to HTTPS using HTTPS RR as Alt-Svc headers, support of full-range color levels for video playback on many systems, support for images containing ICC v4 profiles on macOS, access of macOS share options from the Firefox File menu, the redesign of certificate error pages for better user experience, and added support for Web Authentication API, which allows USB tokens (such as the use of USB or Bluetooth Security Key) for website authentication (Android).<ref name="Firefox 92.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/92.0/releasenotes/ |title=Firefox 92.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 7, 2021 |access-date=September 10, 2021 |archive-date=April 28, 2022 |archive-url=https://web.archive.org/web/20220428121052/https://www.mozilla.org/en-US/firefox/92.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 92.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/92.0/releasenotes/ |title=Firefox for Android 92.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 7, 2021 |access-date=September 10, 2021 |archive-date=September 7, 2021 |archive-url=https://web.archive.org/web/20210907134616/https://www.mozilla.org/en-US/firefox/android/92.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b3
| ''Firefox 4.0 Beta 3''
| August 11, 2010
| ''Third Firefox 4.0 beta release.'' Web authors can now get touch events from Firefox users on Windows 7 machines. A new way of representing values in JavaScript that allows Firefox to execute heavy, numeric code (used for things like graphics and animations) more efficiently.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/08/11/newest-update-to-firefox-4-beta/ |title=Mozilla Firefox 4.0 Beta 3 Release Announcement |publisher=The Mozilla Blog |date=2010-08-11 |accessdate=2011-07-10}}</ref>
|-


Firefox 93 was released on October 5, 2021. Among the many additions and removals were: support for the new AVIF image format, which is based on the modern and royalty free AV1 video codec, support for filling more forms for PDF viewer, automatic unload of tabs based on their last access time, memory usage, and other attributes for Windows when available system memory is critically low, blocking downloads that rely on insecure connections, protecting against potentially malicious or unsafe downloads, improved web compatibility for privacy protections with SmartBlock 3.0, a new referrer tracking protection in Strict Tracking Protection and Private Browsing, disabling of TLS ciphersuites that use 3DES, the addition of forward, back, and reload buttons in the toolbar on tablets, the auto-fill of logins and passwords by default, and the merging of site security and privacy info into one icon (Android).<ref name="Firefox 93.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/93.0/releasenotes/ |title=Firefox 93.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 5, 2021 |access-date=October 5, 2021 |archive-date=October 4, 2021 |archive-url=https://web.archive.org/web/20211004153122/https://www.mozilla.org/en-US/firefox/93.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 93.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/93.0/releasenotes/ |title=Firefox for Android 93.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 5, 2021 |access-date=October 5, 2021 |archive-date=October 5, 2021 |archive-url=https://web.archive.org/web/20211005162934/https://www.mozilla.org/en-US/firefox/android/93.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b4
| ''Firefox 4.0 Beta 4''
| August 24, 2010
| ''Fourth Firefox 4.0 beta release.'' Firefox Sync is now included. Panorama, a new feature that gives users a visual overview of all open tabs, allowing them to be sorted and grouped, is now included. An experimental API is included to provide more efficient Javascript animations. Firefox now supports the HTML5 video "buffered" property.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/08/24/firefox-4-beta-updated-with-sync-and-panorama/ |title=Mozilla Firefox 4.0 Beta 4 Release Announcement |publisher=The Mozilla Blog |date=2010-08-24 |accessdate=2011-07-10}}</ref>
|-


Firefox 94 was released on November 2, 2021. Among the many additions and removals were: a selection of six fun seasonal Colorways (available for a limited time only), the usage of Apple's low power mode for fullscreen video on sites such as ] and ], the addition of <nowiki>about:unloads</nowiki>, fewer interruptions on Windows because of a background agent that will download and install updates even if Firefox is closed, improved WebGL performance and reduced power consumption for Linux users, the introduction of ] to better protect all users against side-channel attacks, support for the new Snap Layouts menus when running on ], reduced CPU usage during socket polling for HTTPS connections, faster storage initialization, improved cold startup by reducing main thread I/O, and the new Inactive Tabs feature (Android).<ref name="Firefox 94.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/94.0/releasenotes/ |title=Firefox 94.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 2, 2021 |access-date=November 2, 2021 |archive-date=May 5, 2022 |archive-url=https://web.archive.org/web/20220505171242/https://www.mozilla.org/en-US/firefox/94.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 94.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/94.0/releasenotes/ |title=Firefox for Android 94.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 2, 2021 |access-date=November 2, 2021 |archive-date=November 3, 2021 |archive-url=https://web.archive.org/web/20211103034851/https://www.mozilla.org/en-US/firefox/android/94.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b5
| ''Firefox 4.0 Beta 5''
| September 7, 2010
| ''Fifth Firefox 4.0 beta release.'' Support for the new proposed Audio Data API. Direct2D Hardware Acceleration is now on by default for Windows 7 users. Firefox button has a new look for Windows Vista and Windows 7 users. Support for HSTS security protocol allowing sites to insist that they only be loaded over SSL.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/09/07/firefox-4-beta-with-faster-graphics-and-new-audio-capabilities-for-the-web/ |title=Mozilla Firefox 4.0 Beta 5 Release Announcement |publisher=The Mozilla Blog |date=2010-09-07 |accessdate=2011-07-10}}</ref>
|-


Firefox 95 was released on December 7, 2021. Among the many additions and removals were: RLBox, a new technology that hardens Firefox against potential security vulnerabilities in third-party libraries, the addition of Firefox download from the Microsoft Store on Windows 10 and 11, reduced CPU usage on macOS in Firefox and WindowServer during event processing, reduced power usage of software decoded video on macOS, especially in fullscreen, the ability to move the Picture-in-Picture toggle button to the opposite side of the video, the enabling of Site Isolation, a User Agent override for Slack.com, which allows Firefox users to use more Call features and have access to Huddles, the new "Homepage" section in the Settings Menu, Hero Images in the "Jump Back In" section, confirmation of snack bar "Auto-close enabled" when a user enables auto-close from the tab tray, and support of Pocket (Thought Provoking Stories section) in Canada.<ref name="Firefox 95.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/95.0/releasenotes/ |title=Firefox 95.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 7, 2021 |access-date=December 7, 2021 |archive-date=May 12, 2022 |archive-url=https://web.archive.org/web/20220512000844/https://www.mozilla.org/en-US/firefox/95.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 95.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/95.0/releasenotes/ |title=Firefox for Android 95.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 7, 2021 |access-date=December 7, 2021 |archive-date=December 7, 2021 |archive-url=https://web.archive.org/web/20211207144954/https://www.mozilla.org/en-US/firefox/android/95.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b6
| ''Firefox 4.0 Beta 6''
| September 14, 2010
| ''Sixth Firefox 4.0 beta release.'' Fixed a stability issue affecting Windows users. Fixed an issue causing rendering errors with plugins affecting Mac OS X users.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/09/14/firefox-4-beta-gets-a-couple-of-quick-fixes/ |title=Mozilla Firefox 4.0 Beta 6 Release Announcement |publisher=The Mozilla Blog |date=2010-09-14 |accessdate=2011-07-10}}</ref>
|-


Firefox 96 was released on January 11, 2022. Among the many additions and removals were: significant improvements in noise-suppression and auto-gain-control as well as slight improvements in echo-cancellation, reduced main-thread load, the default of all cookies to having a SameSite=lax attribute which helps defend against Cross-Site Request Forgery (CSRF) attacks, the selection of printing odd/even pages, history highlights to recently visited sites, the display of better images for recent bookmarks on the home page, and improved "fill link from clipboard for Android 12 (Android).<ref name="Firefox 96.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/96.0/releasenotes/ |title=Firefox 96.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 11, 2022 |access-date=January 18, 2022 |archive-date=April 19, 2022 |archive-url=https://web.archive.org/web/20220419063529/https://www.mozilla.org/en-US/firefox/96.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 96.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/96.0/releasenotes/ |title=Firefox for Android 96.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 11, 2022 |access-date=January 18, 2022 |archive-date=January 15, 2022 |archive-url=https://web.archive.org/web/20220115200451/https://www.mozilla.org/en-US/firefox/android/96.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b7
| ''Firefox 4.0 Beta 7''
| November 10, 2010
| ''Seventh Firefox 4.0 beta release.'' Uses JägerMonkey, a new, faster JavaScript engine. WebGL is enabled by default on Windows and Mac OS X. Certain rendering operations are now hardware-accelerated using Direct3D 9 on Windows XP, Direct3D 10 on Windows Vista and 7, and OpenGL on Mac OS X. Improved web typography using OpenType with support for ligatures, kerning and font variants. HTML5 Forms API makes web based forms easier to implement and validate.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/11/10/fasten-your-seatbelts-latest-firefox-4-beta-boosts-speed-in-the-browser/ |title=Mozilla Firefox 4.0 Beta 7 Release Announcement |publisher=The Mozilla Blog |date=2010-11-10 |accessdate=2011-07-10}}</ref>
|-


Firefox 97 was released on February 8, 2022. Among the many additions and removals were: support and display for the new style of scrollbars on Windows 11, improvements to system font loading which makes opening and switching to new tabs faster in certain situations for macOS, removal of the 18 colorway themes of Firefox 94, removal of support for directly generating PostScript for printing on Linux, with the exception of printing to Postscript printers, and the addition of a new prompt when users attempt to leave private browsing with active downloads (Android).<ref name="Firefox 97.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/97.0/releasenotes/ |title=Firefox 97.0, See All New Features, Updates and Fixes |website=Mozilla |date=February 8, 2022 |access-date=February 8, 2022 |archive-date=April 19, 2022 |archive-url=https://web.archive.org/web/20220419063534/https://www.mozilla.org/en-US/firefox/97.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 97.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/97.0/releasenotes/ |title=Firefox for Android 97.0, See All New Features, Updates and Fixes |website=Mozilla |date=February 8, 2022 |access-date=February 8, 2022 |archive-date=February 8, 2022 |archive-url=https://web.archive.org/web/20220208224657/https://www.mozilla.org/en-US/firefox/android/97.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b8
| ''Firefox 4.0 Beta 8''
| style="white-space: nowrap;" | December 21, 2010
| ''Eighth Firefox 4.0 beta release.'' The Firefox Sync setup experience has been greatly improved across desktop and mobile devices. Speed, functionality, and compatibility improvements to WebGL. Additional polish for the Firefox Add-ons Manager.<ref>{{cite web|url=http://blog.mozilla.com/blog/2010/12/22/firefox-4-beta-gives-you-an-easier-firefox-sync-seup-and-3d-graphics-for-the-holidays/ |title=Mozilla Firefox 4.0 Beta 8 Release Announcement |publisher=The Mozilla Blog |date=2010-12-22 |accessdate=2011-07-10}}</ref>
|-


Firefox 98 was released on March 8, 2022. Among the many additions were: a new optimized download flow, in which, instead of prompting every time, files will download automatically, allowing users to choose from a number of built-in search engines to set as their default, the ability to change Wallpapers on Homepage, and the ability to clear cookies and website data for a single domain (Android).<ref name="Firefox 98.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/98.0/releasenotes/ |title=Firefox 98.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 8, 2022 |access-date=March 8, 2022 |archive-date=April 19, 2022 |archive-url=https://web.archive.org/web/20220419063529/https://www.mozilla.org/en-US/firefox/98.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 98.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/98.0/releasenotes/ |title=Firefox for Android 98.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 8, 2022 |access-date=March 8, 2022 |archive-date=March 8, 2022 |archive-url=https://web.archive.org/web/20220308164040/https://www.mozilla.org/en-US/firefox/android/98.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b9
| ''Firefox 4.0 Beta 9''
| January 14, 2011
| ''Ninth Firefox 4.0 beta release.'' Overhaul of the bookmarks and history code, enabling faster bookmarking and startup performance. Per-compartment garbage collection is now enabled, reducing work done during complex animations.<ref>{{cite web|url=http://blog.mozilla.com/blog/2011/01/14/the-next-major-version-of-firefox-is-ready-to-test/ |title=Mozilla Firefox 4.0 Beta 9 Release Announcement |publisher=The Mozilla Blog |date=2011-01-14 |accessdate=2011-07-10}}</ref>
|-


Firefox 99 was released on April 5, 2022. Among the many additions were: the ability to toggle Narrate in ReaderMode with the keyboard shortcut "n", added support for search—with or without diacritics—in the PDF viewer, support for credit card autofill and capture in Germany and France, the ability to clear cookies and data for a single domain, and improved performance of Pocket articles on the homescreen (Android).<ref name="Firefox 99.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/99.0/releasenotes/ |title=Firefox 99.0, See All New Features, Updates and Fixes |website=Mozilla |date=April 5, 2022 |access-date=April 5, 2022 |archive-date=April 28, 2022 |archive-url=https://web.archive.org/web/20220428084513/https://www.mozilla.org/en-US/firefox/99.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 99.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/99.0/releasenotes/ |title=Firefox for Android 99.0, See All New Features, Updates and Fixes |website=Mozilla |date=April 5, 2022 |access-date=April 5, 2022 |archive-date=April 5, 2022 |archive-url=https://web.archive.org/web/20220405145745/https://www.mozilla.org/en-US/firefox/android/99.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b10
| ''Firefox 4.0 Beta 10''
| January 25, 2011
| ''Tenth Firefox 4.0 beta release.'' Compatibility and stability improvements when using Adobe Flash on Mac OS X. Improvements in memory usage. Support for a graphics driver blacklist to improve stability.<ref>{{cite web|url=http://blog.mozilla.com/blog/2011/01/25/test-firefox-4-beta-help-us-make-it-better/ |title=Mozilla Firefox 4.0 Beta 10 Release Announcement |publisher=The Mozilla Blog |date=2011-01-25 |accessdate=2011-07-10}}</ref>
|-


Firefox 100 was released on May 3, 2022. Among the many additions were: support for captions/subtitles display on ], Amazon ], and ] videos watched in Picture-in-Picture, which now supports video captions on websites that use WebVTT (Web Video Text Track) format,<ref>{{Cite web |last=Holt |first=Kris |title=Firefox 100 includes subtitle support for picture-in-picture video |date=2022-05-03 |url=https://www.engadget.com/firefox-100-subtitle-picture-in-picture-desktop-android-https-130026413.html |access-date=2023-05-05 |website=] |language=en-US |archive-date=May 5, 2023 |archive-url=https://web.archive.org/web/20230505160536/https://www.engadget.com/firefox-100-subtitle-picture-in-picture-desktop-android-https-130026413.html |url-status=live }}</ref> support for HDR video on macOS, hardware accelerated AV1 video decoding on Windows with supported GPUs, video overlay on Windows for Intel GPUs, reducing power usage during video playback, improved fairness between painting and handling other events, support for credit card autofill and capture in the UK, support for profiling multiple java threads, updated History, and bookmark search (Android).<ref name="Firefox 100.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/100.0/releasenotes/ |title=Firefox 100.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 3, 2022 |access-date=May 3, 2022 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/100.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 100.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/100.0/releasenotes/ |title=Firefox for Android 100.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 3, 2022 |access-date=May 3, 2022 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503162211/https://www.mozilla.org/en-US/firefox/android/100.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b11
| ''Firefox 4.0 Beta 11''
| February 8, 2011
| ''Eleventh Firefox 4.0 beta release.'' Support for the proposed Do Not Track ("DNT") header. Connection status messages are now shown in a small overlay. WebGL has been re-enabled on Linux. The default homepage design has been refreshed. Firefox no longer switches into offline mode automatically.<ref>{{cite web|url=http://blog.mozilla.com/blog/2011/02/08/mozilla-firefox-4-beta-now-including-do-not-track-capabilities/ |title=Mozilla Firefox 4.0 Beta 11 Release Announcement |publisher=The Mozilla Blog |date=2011-02-08 |accessdate=2011-07-10}}</ref>
|-


Firefox 101 was released on May 31, 2022. Among the many additions were: the prefers-contrast media query, which allows sites to detect if the user has requested that web content is presented with a higher (or lower) contrast, all non-configured MIME types that can now be assigned a custom action upon download completion, the use of as many microphones at the same time, during video conferencing, added support for large, small, dynamic viewport units and logical ones (*vi and *vb), added web conferencing support for enumerating and selecting multiple audio input devices through <nowiki>navigator.mediaDevices.enumerateDevices()</nowiki>, and added support for using the magnifier on Android 9+ for positioning the cursor in forms on web pages (Android).<ref name="Firefox 101.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/100.0/releasenotes/ |title=Firefox 101.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 31, 2022 |access-date=May 31, 2022 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/100.0/releasenotes/ |url-status=live }}</ref><ref name="Firefox 101.0 Android">{{cite web |url=https://www.mozilla.org/en-US/firefox/android/101.0/releasenotes/ |title=Firefox for Android 101.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 31, 2022 |access-date=May 31, 2022 |archive-date=May 31, 2022 |archive-url=https://web.archive.org/web/20220531132600/https://www.mozilla.org/en-US/firefox/android/101.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 4.0b12
| ''Firefox 4.0 Beta 12''
| February 25, 2011
| ''Twelfth Firefox 4.0 beta release.'' Increased performance while viewing Flash content. Improved plugin compatibility with hardware acceleration enabled. Hovering over links now displays the URL at the bottom of the window rather than in the location bar. General stability, performance, and compatibility improvements.<ref>{{cite web|url=http://blog.mozilla.com/blog/2011/02/25/get-the-latest-mozilla-firefox-4-beta-test-your-favorite-websites-and-add-ons/ |title=Mozilla Firefox 4.0 Beta 12 Release Announcement |publisher=The Mozilla Blog |date=2011-02-25 |accessdate=2011-07-10}}</ref>
|-


=== Firefox 102 through 114 ===
| style="white-space:nowrap; background:pink;" | 4.0 RC1
Firefox 102 and Firefox 102 ESR, released on June 28, 2022, gained the ability to turn off the automatic opening of the download pane, protections against tracking through ] when Enhanced Tracking Protection is set to "strict", subtitles in Picture-in-Picture (PiP) for sites including ] and ],<ref>{{cite web |last=Friedrich |first=Greta |title=Firefox 102: Mehrere Sicherheitslücken geschlossen |url=https://www.heise.de/news/Firefox-102-Mehrere-Sicherheitsluecken-geschlossen-7156179.html |website=] |date=June 28, 2022 |access-date=3 May 2023 |language=de |archive-date=May 3, 2023 |archive-url=https://web.archive.org/web/20230503002528/https://www.heise.de/news/Firefox-102-Mehrere-Sicherheitsluecken-geschlossen-7156179.html |url-status=live }}</ref> and improved security by ] audio decoding into its own ] process.<ref>{{cite web |last1=Arghire |first1=Ionut |title=Firefox 102 Patches 19 Vulnerabilities, Improves Privacy |url=https://www.securityweek.com/firefox-102-patches-19-vulnerabilities-improves-privacy/ |website=SecurityWeek |access-date=3 May 2023 |date=29 June 2022 |archive-date=May 3, 2023 |archive-url=https://web.archive.org/web/20230503002530/https://www.securityweek.com/firefox-102-patches-19-vulnerabilities-improves-privacy/ |url-status=live }}</ref>
| ''Firefox 4.0 <br /> Release Candidate 1''
| March 9, 2011
| ''First Firefox 4.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/4.0rc1/releasenotes/ |title=Mozilla Firefox 4.0 Release Candidate 1 Release Notes |publisher=Mozilla |date=2011-03-09 |accessdate=2011-07-10}}</ref>
* General stability, performance, and compatibility improvements.
|-


Firefox 103, released on July 26, 2022, improved responsiveness on macOS during periods of high CPU load by switching to a modern lock API, required fields highlighted in PDF forms, improved performance on high-refresh rate monitors (120&nbsp;Hz+), improved Picture-in-Picture subtitles, which are now available at Funimation, Dailymotion, Tubi, Hotstar, and SonyLIV, buttons in the Tabs toolbar reachable with Tab, Shift+Tab, and Arrow keys, Windows' "Make text bigger" accessibility setting now affecting all the UI and content pages, rather than only applying to system font sizes, the browser getting pinned to the Windows taskbar during installation on Windows 10 and 11, and the removal of a configuration option to allow SHA-1 signatures in certificates, which are not supported.<ref>{{Cite web |last=Brinkmann |first=Martin |date=July 26, 2022 |title=Firefox 103: improved toolbar access, performance and more |url=https://www.ghacks.net/2022/07/26/firefox-103-improved-toolbar-access-performance-and-more/ |access-date=May 4, 2023 |website=Ghacks |archive-date=May 4, 2023 |archive-url=https://web.archive.org/web/20230504160849/https://www.ghacks.net/2022/07/26/firefox-103-improved-toolbar-access-performance-and-more/ |url-status=live }}</ref>
| style="white-space:nowrap; background:pink;" | 4.0 RC2
| ''Firefox 4.0 <br /> Release Candidate 2''
| March 18, 2011
| ''Second Firefox 4.0 release candidate.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/4.0rc2/releasenotes/ |title=Mozilla Firefox 4.0 Release Candidate 2 Release Notes |publisher=Mozilla |date=2011-03-18 |accessdate=10 July 2011}}</ref>
* Blacklisted a few invalid HTTPS certificates.
* Updated localizations for 29 locales.
* Added Vietnamese localization, bringing the total languages available in Firefox 4 to 83.
|-


Firefox 104 was released on August 23, 2022. Among the many additions and removals were: the availability of subtitles for Disney+ in Picture-in-Picture, support for both the scroll-snap-stop property as well as re-snapping, and the ability of the Firefox profiler to analyze power usage of a website for ] and Windows 11 only, while the Firefox UI itself will now be throttled for performance and battery usage when minimized or occluded, in the same way background tabs are.<ref name="Firefox 104.0">{{Cite web |title=Firefox 104 Now Available With Minor Improvements |url=https://www.phoronix.com/news/Firefox-104-Released |date=August 23, 2022 |access-date=May 4, 2023 |website=www.phoronix.com |language=en |archive-date=May 4, 2023 |archive-url=https://web.archive.org/web/20230504160917/https://www.phoronix.com/news/Firefox-104-Released |url-status=live }}</ref>
| style="background:salmon;" | 4.0
| ''Firefox 4.0 <br /><small>"]"</small>''
| March 22, 2011
| ''Official Firefox 4.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/4.0/releasenotes/ |title=Mozilla Firefox 4.0 Release Notes |publisher=Mozilla |date=2011-03-22 |accessdate=April 22, 2012}}</ref>
* Firefox 4 is available in over 80 languages
* Uses JägerMonkey, a faster JavaScript engine
* Support for Do Not Track ("DNT") header that allows users to opt out of behavioral advertising
* ] is included by default
* Graphic rendering is now hardware-accelerated using Direct3D 9 (Windows XP), Direct3D 10 (Windows Vista & 7), and OpenGL on Mac OS
* Direct2D Hardware Acceleration is now on by default for Windows 7 users
* WebGL is enabled on all platforms that have a capable graphics card with updated drivers
* Native support for the HD HTML5 WebM video format, hardware accelerated where available
* Firefox button has a new look for Windows Vista and Windows 7 users
* Tabs are now on top by default on Windows, Mac&nbsp;OS&nbsp;X, and Linux
* You can search for and switch to already open tabs in the Smart Location Bar
* The stop and reload buttons have been merged into a single button on Windows, Mac&nbsp;OS&nbsp;X, and Linux
* The Bookmarks Toolbar has been replaced with a Bookmarks Button by default (you can switch it back if you'd like)
* Crash protection when there is a crash in ], ] or ] plugins
* You can turn any tab into an "App Tab"
* The default homepage design has been refreshed
* Overhaul of the bookmarks and history code, enabling faster bookmarking and startup performance
* Per-compartment garbage collection is now enabled, reducing work done during complex animations
* Additional polish for the ] Manager
* Improved web typography using ] with support for ligatures, kerning and font variants
* Web developers can animate content using CSS Transitions
* Responsiveness and scrolling improvements from the new retained layers layout system
* HTML5 Forms API makes web based forms easier to implement and validate
* Support for the new proposed Audio Data API
* Support for HSTS security protocol allowing sites to insist that they only be loaded over SSL
* A new feature called Panorama gives users a visual overview of all open tabs, allowing them to be sorted and grouped
* An experimental API is included to provide more efficient JavaScript animations
* Firefox now supports the HTML5 video "buffered" property
* Changes to how XPCOM components are registered in order to help startup time and process separation
* New Addons Manager and extension management API
* Significant API improvements are available for JS-ctypes, a ] for extensions
* CSS Transitions are partially supported
* Core Animation rendering model for plugins on Mac&nbsp;OS&nbsp;X
* Web developers can update the URL field without reloading the page using HTML History APIs
* More responsive page rendering using lazy frame construction
* Link history lookup is done asynchronously to provide better responsiveness during pageload
* CSS :visited selectors have been changed to block websites from being able to check a user's browsing history
* New HTML5 parser
* Support for more HTML5 form controls
* Web authors can now get touch events from Firefox users on Windows 7 machines
* A new way of representing values in JavaScript that allows Firefox to execute heavy, numeric code more efficiently.
|-


Firefox 105 was released on September 20, 2022. Among the many additions and removals were: an option to print only the current page from the print preview dialog, support for partitioned service workers in third-party contexts, a swipe to navigate (two fingers on a touchpad swiped left or right to perform history back or forward) on Windows, compliance with the User Timing L3 specification, which adds additional optional arguments to the performance.mark and performance.measure methods to provide custom start times, end times, duration, and attached details, faster searching in large lists for individual items, which replaces array.includes and array.indexOf with an optimized SIMD version, support for the Offscreen Canvas DOM API with full context and font support.<ref name="Firefox 105.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/105.0/releasenotes/ |title=Firefox 105.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 20, 2022 |access-date=September 20, 2022 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/105.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 4.0.1
| ''Firefox 4.0.1 <br /><small>"]"</small>''
| April 28, 2011
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/4.0.1/releasenotes/ |title=Mozilla Firefox 4.0.1 Release Notes |publisher=Mozilla |date=2011-04-28 |accessdate=April 22, 2012}}</ref>
* Fixed several security issues
* Fixed several stability issues
on June 21, 2011.
|}


Firefox 106 was released on October 18, 2022. Among the many additions and removals were: the possibility to edit PDFs: including writing text, drawing, and adding signatures, the ability to become the default PDF application on Windows systems on setting Firefox as the default browser, the ability to pin the Windows taskbar on Windows 10 and 11 for simpler access, the redesign of private windows to increase the feeling of privacy, swipe-to-navigate (two fingers on a touchpad swiped left or right to perform history back or forward) for Linux users on Wayland, Text Recognition in images for users of macOS 10.15 and higher, the addition of "Firefox View", the introduction of 18 new Colorways with the launch of "Independent Voices" collection, major upgrade to WebRTC capabilities, and wallpapers for the "Independent Voices" collection.<ref name="Firefox 106.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/106.0/releasenotes/ |title=Firefox 106.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 18, 2022 |access-date=October 18, 2022 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/106.0/releasenotes/ |url-status=live }}</ref>
=== Rapid releases ===
==== Versions 5 through 9 ====
From now on, Gecko version numbering is same as Firefox build version number, starting 5.0 on Firefox 5.
{{#section:Firefox release history|color table}}
{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-


Firefox 107 was released on November 15, 2022. Among the many additions and removals were: improved performance of the instance when Microsoft's IME and Defender retrieve the URL of a focused document in Windows 11 version 22H2, support of power profiling (visualizing performance data recorded from web browsers) on Linux and Mac with Intel CPUs, in addition to Windows 11 and Apple Silicon, a couple of helpful improvements in DevTools making it easier to debug WebExtensions, with a new argument allowing users to automatically open DevTools just in case, and a Reload button in the DevTools toolbox to see the changes, the availability of Total Cookie Protection, and enabled text selection magnifier for website text.<ref name="Firefox 107.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/107.0/releasenotes/ |title=Firefox 107.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 15, 2022 |access-date=November 16, 2022 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/107.0/releasenotes/ |url-status=live }}</ref>
| style="vertical-align:top;" rowspan="9" | ''']'''
| style="background:pink;" | 5.0a2
| ''Firefox 5.0 Aurora''
| April 13, 2011
| ''First Firefox 5.0 Aurora build.''<ref name="newdevchannels">{{cite web|url=https://developer.mozilla.org/devnews/index.php/2011/04/07/new-development-channels-and-repositories-for-rapid-releases/ |title=New dev channels and repositories |publisher=Mozilla Developer News |date=2011-04-17 |accessdate=2011-07-06}}</ref><ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/04/2011-04-13-03-mozilla-aurora-debug/ |title=Mozilla Firefox 5.0 – First Aurora build |publisher=Mozilla |date=2011-05-13 |accessdate=2011-07-06}}</ref>
|-


Firefox 108 was released on December 13, 2022. Among the many additions and removals were: enabling by default of import maps, which allow web pages to control the behavior of JavaScript imports, processes used for background tabs getting the use of efficiency mode on ] to limit resource use, the ability to open the Process manager via the Shift+Esc keyboard shortcut, improved frame scheduling when under load, support for properly color correcting images tagged with ICCv4 profiles, support for the WebMIDI API and a new experimental mechanism for controlling access to dangerous capabilities, the ability to save web pages as PDF files to conveniently access them later from the Downloads folder, and the ability to organize tabs in the tabs tray by long-pressing on a tab.<ref name="Firefox 108.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/108.0/releasenotes/ |title=Firefox 108.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 13, 2022 |access-date=December 13, 2022 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/108.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 5.0b1
| ''Firefox 5.0 Beta 1''
| May 4, 2011
| No official Firefox 5.0 beta release. <br /> Renamed "Aurora 5.0 Alpha 2" build to test release channel switching for users on the Aurora-Channel.<ref>{{cite web|url=https://developer.mozilla.org/devnews/index.php/2011/05/04/aurora-channel-switcher-testing/ |title=Aurora channel-switcher-testing |publisher=Mozilla Developer News |date=2011-05-04 |accessdate=2011-07-06}}</ref>
|-


Firefox 109 was released on January 17, 2023. Among the many additions and removals were: the enabling of Manifest Version 3 (MV3) extension support by default, the enabling of the Arbitrary Code Guard exploit protection in the media playback utility processes, the native HTML date picker for date and datetime inputs being used with a keyboard alone, a built-in dictionary for the Firefox spellchecker for builds in the Spanish and Argentine Spanish locales, and the removal of Colorways.<ref name="Firefox 109.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/109.0/releasenotes/ |title=Firefox 109.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 17, 2023 |access-date=January 17, 2023 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/109.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 5.0b2
| ''Firefox 5.0 Beta 2''
| May 20, 2011
| ''First Firefox 5.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/5.0beta/releasenotes/ |title=Mozilla Firefox 5.0 Beta Release Notes |publisher=Mozilla |date=2011-05-20 |accessdate=2011-07-06}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/05/20/firefoxbeta/ |title=Mozilla Firefox 5.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2011-05-20 |accessdate=2011-07-06}}</ref>
|-


Firefox 110 was released on February 14, 2023. Major changes included support for importing bookmarks, history, and password data from the ] and ] web browsers, support for Canvas2D ]-acceleration, support for GPU "sandboxing" on Windows, and various security fixes along with various improvements made to WebGL to improve performance. There were also various features added for ]s such as support for ] size container queries.<ref>{{Cite web |last=Larabel |first=Michael |date=February 14, 2023 |title=Firefox 110 Released With Better WebGL Performance, GPU-Accelerated 2D Canvas |url=https://www.phoronix.com/news/Firefox-110-Released |access-date=2023-05-04 |website=Phoronix |language=en |archive-date=May 4, 2023 |archive-url=https://web.archive.org/web/20230504163308/https://www.phoronix.com/news/Firefox-110-Released |url-status=live }}</ref>
| style="background:pink;" | 5.0b3
| ''Firefox 5.0 Beta 3''
| June 1, 2011
| ''Second Firefox 5.0 Beta release.''
|-


Firefox 111 was released on March 14, 2023.<ref>{{Cite web |last=Sneddon |first=Joey |date=2023-03-14 |title=Firefox 111 Released with Minor Improvements, Updated PDF.js |url=https://www.omgubuntu.co.uk/2023/03/firefox-111-released |access-date=2023-05-02 |website=OMG! Ubuntu |language=en-GB}}</ref> Among the many additions and removals were: the enabling of Windows native notifications, the ability for Firefox Relay users to opt-in to create Relay email masks directly from the credential manager, the Silhe Friulian (fur) and Sardinian (sc) locales, support of the use of the rel attribute on form elements, allowing the specification of the relationship between the current document and the form target in a simpler, cross-browser way, the enabling of Origin private file system access, a new storage API that enables web applications to store and retrieve data from and to the filesystem in a sandbox, the ability for users to view PDF documents as they browse, and the addition of Total Cookie Protection to Enhanced Tracking Protection's Strict Mode.<ref name="Firefox 111.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/111.0/releasenotes/ |title=Firefox 111.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 14, 2023 |access-date=March 14, 2023 |archive-date=May 3, 2022 |archive-url=https://web.archive.org/web/20220503214108/https://www.mozilla.org/en-US/firefox/111.0/releasenotes/ |url-status=live }}</ref>
| style="white-space:nowrap; background:pink;" | 5.0b5<ref group="t">Builds of version 5.0b4 were created, but not released.</ref>
| ''Firefox 5.0 Beta 5''
| June 9, 2011
| ''Third Firefox 5.0 Beta release.''
|-


Firefox 112 was released on April 11, 2023. Major changes included the ability to reveal passwords in password fields, the ability to use the middle click button on a ] to close tabs in the tab list, along with the ability to use the <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>T</kbd> ] to restore a previous browser session, among other changes and bug fixes.<ref>{{Cite web |last=Nestor |first=Marius |date=2023-04-10 |title=Mozilla Firefox 112 Web Browser Is Now Available for Download, This Is What's New |url=https://9to5linux.com/mozilla-firefox-112-web-browser-is-now-available-for-download-this-is-whats-new |access-date=2023-05-02 |website=9to5Linux |language=en-US |archive-date=May 2, 2023 |archive-url=https://web.archive.org/web/20230502051311/https://9to5linux.com/mozilla-firefox-112-web-browser-is-now-available-for-download-this-is-whats-new |url-status=live }}</ref><ref>{{Cite web |last=Sneddon |first=Joey |date=2023-04-11 |title=Mozilla Firefox 112 Released with Low-Key Iterative Improvements |url=https://www.omgubuntu.co.uk/2023/04/mozilla-firefox-112-released |access-date=2023-05-04 |website=OMG! Ubuntu |language=en-GB |archive-date=May 4, 2023 |archive-url=https://web.archive.org/web/20230504064542/https://www.omgubuntu.co.uk/2023/04/mozilla-firefox-112-released |url-status=live }}</ref>
| style="background:pink;" | 5.0b6
| ''Firefox 5.0 Beta 6''
| June 14, 2011
| ''Fourth Firefox 5.0 Beta release.''
|-


Firefox 113 was released on May 9, 2023. Major changes included enhanced Picture-in-Picture; private windows protecting users even better by blocking third-party cookies and storage of content trackers; the inclusion of special characters in passwords generated by the browser; support for AV1 Image Format files containing animations (AVIS), improving support for AVIF images across the web; a tighter Windows GPU sandbox; and the availability of the browser in the Tajik (tg) language.<ref>{{Cite web |last=Davenport |first=Corbin |title=Firefox 113 Is Faster and Has a New Picture-in-Picture Mode |url=https://www.howtogeek.com/890329/firefox-113-is-faster-and-has-a-new-picture-in-picture-mode/ |access-date=2023-05-12 |website=How-To Geek |date=May 9, 2023 |language=en-US |archive-date=May 12, 2023 |archive-url=https://web.archive.org/web/20230512003839/https://www.howtogeek.com/890329/firefox-113-is-faster-and-has-a-new-picture-in-picture-mode/ |url-status=live }}</ref><ref>{{Cite web |title=Firefox 113 Available With Animated AV1 Image Support (AVIS) |url=https://www.phoronix.com/news/Mozilla-Firefox-113 |access-date=2023-05-12 |website=Phoronix |language=en |archive-date=May 12, 2023 |archive-url=https://web.archive.org/web/20230512003839/https://www.phoronix.com/news/Mozilla-Firefox-113 |url-status=live }}</ref>
| style="background:pink;" | 5.0b7
| ''Firefox 5.0 Beta 7''
| June 15, 2011
| ''Fifth Firefox 5.0 Beta release.''
|-


Firefox 114 was released on June 6, 2023. Major changes included an added UI to manage the DNS over HTTPS exception list; the accessibility of the Bookmarks menu by adding the ''Bookmarks menu'' button to the toolbar, the ability for the user to restrict searches to their local browsing history by selecting ''Search history'' from the History, Library or Application menu buttons; the ability for macOS users to capture video from their cameras in all supported native resolutions, enabling resolutions higher than 1280x720; the possibility for users to reorder the extensions listed in the extensions panel; the preference of FIDO2 / WebAuthn authenticators over USB; the availability of Pocket Recommended content in France, Italy, and Spain (desktop); and the ''Open in app'' button in PDF viewer opening PDFs in an external app (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/114.0/releasenotes/ |title=Firefox 114.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 6, 2023 |access-date=June 6, 2023 |archive-date=August 29, 2023 |archive-url=https://web.archive.org/web/20230829005400/https://www.mozilla.org/en-US/firefox/114.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/114.0/releasenotes/ |title=Firefox for Android 114.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 6, 2023 |access-date=June 6, 2023 |archive-date=June 6, 2023 |archive-url=https://web.archive.org/web/20230606143343/https://www.mozilla.org/en-US/firefox/android/114.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 5.0
| ''Firefox 5.0''
| June 21, 2011
| ''Official Firefox 5.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/5.0/releasenotes/ |title=Mozilla Firefox 5.0 Release Notes |publisher=Mozilla |date=2011-06-21 |accessdate=2011-07-10}}</ref>
* Better ] support for ], ], ], ] and ]
* Better visibility for the ] preference<ref name="Mashable" />
* Stability and ] improvements<ref name="].net">{{cite web |url=http://hexus.net/tech/news/software/30901-firefox-5-heading-way/ |title=News: Firefox 5 heading your way |publisher=Hexus.net |date=20 June 2011 |accessdate=June 20, 2011}}</ref><ref name="firefox-dev">{{cite web |title=Firefox 5 for developers |work=MDC Docs Firefox 5 for developers |publisher=] |url=https://developer.mozilla.org/en/firefox_5_for_developers |accessdate=2011-06-17}}</ref><ref>{{cite web |title=Firefox Beta release notes |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/5.0beta/releasenotes/ |publisher=] |accessdate=17 June 2011}}</ref>
* Better tuned ] idle connection logic<ref name="Mashable">{{cite web | url=http://mashable.com/2011/06/21/firefox-5/ |title=Firefox 5 Available for Download |publisher=Mashable |date=June 21, 2011 |accessdate=June 22, 2011}}</ref>
* Improved ], ], ], and ] performance
* Improved ] for some ]
* Improved desktop environment integration for Linux users
* Better ] security (WebGL content can no longer load cross-domain textures).<ref name="ftu">{{cite news |last=Marshall |first=Gary |title=Hands on: Firefox 5 review |url= http://www.techradar.com/news/software/applications/hands-on-firefox-5-review-969338 |accessdate=June 23, 2011 |date=June 22, 2011 |work=Application News |publisher=TechRadar UK}}</ref>
* Background tabs have setTimeout and setInterval clamped to 1000 ] to improve performance<ref name="moz-n">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/5.0/releasenotes/ |title=Mozilla Firefox Release Notes |publisher=Mozilla.org |date=June 21, 2011 |accessdate=February 7, 2012}}</ref>
* Gecko version number bumped to 5.0 to match (and from then on stay synced to) Firefox's major version number<ref>{{cite web |title = Gecko versions and application versions |url = https://developer.mozilla.org/en-US/docs/Mozilla/Gecko/Versions |work = ] |accessdate = 2013-11-18 }}</ref>
* Added support for CSS animations.
* The Do-Not-Track header preference has been moved to increase discoverability.
* Tuned HTTP idle connection logic for increased performance.
* Improved canvas, JavaScript, memory, and networking performance.
* Improved standards support for HTML5, XHR, MathML, SMIL, and canvas.
* Improved spell checking for some locales.
* Improved desktop environment integration for Linux users.
* WebGL content can no longer load cross-domain textures.
* Background tabs have <code>setTimeout</code> and <code>setInterval</code> clamped to 1000 ms to improve performance.
|-


=== Firefox 115 through 127 ===
| style="background:salmon;" | 5.0.1
Firefox 115 and Firefox 115 ESR were released on July 4, 2023. Major changes included the ability to bring over payment methods saved in Chrome-based browsers to the browser; the enabling of hardware video decoding for Intel GPUs on Linux; the close buttons on the Tab Manager dropdown; a refreshed and streamlined user interface for importing data in from other browsers; the ability for users without platform support for H264 video decoding to fallback to Cisco's OpenH264 plugin for playback; the ability for middle clicks on the new tab button to open the xclipboard contents in the new tab on Linux (desktop); and the address button's new search bar that allows users to easily switch between search engines and search their bookmarks and browsing history (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/115.0/releasenotes/ |title=Firefox 115.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 4, 2023 |access-date=July 4, 2023 |archive-date=September 29, 2023 |archive-url=https://web.archive.org/web/20230929163649/https://www.mozilla.org/en-US/firefox/115.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/115.0esr/releasenotes/ |title=Firefox ESR 115.0esr, See All New Features, Updates and Fixes |website=Mozilla |date=July 4, 2023 |access-date=July 4, 2023 |archive-date=July 4, 2023 |archive-url=https://web.archive.org/web/20230704134827/https://www.mozilla.org/en-US/firefox/115.0esr/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/115.0/releasenotes/ |title=Firefox for Android 115.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 4, 2023 |access-date=July 4, 2023 |archive-date=July 4, 2023 |archive-url=https://web.archive.org/web/20230704151543/https://www.mozilla.org/en-US/firefox/android/115.0/releasenotes/ |url-status=live }}</ref>
| ''Firefox 5.0.1''
| July 11, 2011
| ''Off-cycle stability update'' for Mac OS X only.
* Fixed an issue in Mac&nbsp;OS&nbsp;X 10.7 that could cause Firefox to crash<ref>{{cite web |url=https://blog.mozilla.org/products/2011/07/08/firefox-5-minor-update-for-mac-coming-soon/ |title=Firefox 5 minor update for Mac coming soon |publisher=blizzard |date=July 8, 2011 |accessdate=April 22, 2012 |archiveurl=https://web.archive.org/web/20121221075954/http://blog.mozilla.org/products/2011/07/08/firefox-5-minor-update-for-mac-coming-soon/ |archivedate=December 21, 2012 |deadurl=yes}}</ref>
* Fixed an issue caused by Apple's "Java for Mac&nbsp;OS&nbsp;X 10.6 Update 5" where the Java plugin would not be loaded<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/5.0.1/releasenotes/ |title=Mozilla Firefox 5.0.1 Release Notes |publisher=Mozilla |date=July 11, 2011 |accessdate=April 22, 2012}}</ref>
''on August 16, 2011.''
|-


Firefox 116 was released on August 1, 2023. Starting with Firefox 116, Microsoft Windows support is exclusively for Windows 10 and above. Major changes included the sidebar switcher allowing users to access Bookmarks, History and Synced Tabs panels easily, quickly switch between them, move the sidebar to another side of the browser window, or close the sidebar; available access to the release notes in the update notification prompt in the form of a "Learn More" link whenever an update is available in English locales; the ability for users to copy any file from their operating system and paste it into the browser; the volume slider in Picture-in-Picture; the possibility to edit existing text annotations; the improvement of the upload performance of HTTP/2 on those with a higher bandwidth delay product; added support for the dirname attribute to pass text directionality information about input and textarea elements to the server; added support for CSP3 external hashes; the Audio Output Devices API that now enables sites to redirect audio from media elements to permitted output devices (speakers) other than the system default for the user-agent; added upport for proper BYOB readers on Fetch and WebTransport, which allows developers to prepare their ArrayBuffer so that it can be reused for read requests and thus saves memory allocation (desktop); and fixes to pull-to-refresh issues and desktop mode's zoom issues on some sites and "Open links in apps" issue when Firefox is not the default browser (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/116.0/releasenotes/ |title=Firefox 116.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 1, 2023 |access-date=August 1, 2023 |archive-date=September 1, 2023 |archive-url=https://web.archive.org/web/20230901083254/https://www.mozilla.org/en-US/firefox/116.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/116.0/releasenotes/ |title=Firefox for Android 116.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 1, 2023 |access-date=August 1, 2023 |archive-date=August 1, 2023 |archive-url=https://web.archive.org/web/20230801133055/https://www.mozilla.org/en-US/firefox/android/116.0/releasenotes/ |url-status=live }}</ref>
| style="vertical-align:top;" rowspan="10" | ''']'''
| style="background:pink;" | 6.0a1
| ''Firefox 6.0 Nightly''
| April 13, 2011
| First Firefox 6.0 Nightly build.<ref name="newdevchannels" /><ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/04/2011-04-13-03-mozilla-central-debug/ |title=Mozilla Firefox 6.0 – First Nightly build |publisher=Mozilla |date=2011-05-13 |accessdate=2011-07-11}}</ref>
|-


Firefox 117 was released on August 29, 2023. Major changes included the extension of support for credit card autofill to users running the browser in the IT, ES, AT, BE, and PL locales; the ability for macOS users to control the tabability of controls and links via about:preferences; the addition of a dom.event.contextmenu.shift_suppresses_event preference to prevent the context menu from appearing; the browser no longer showing its own screen sharing indicator on Wayland desktop environments; the enhancement of web compatibility inspection with the new CSS compatibility tooltip in the Developer Tools Inspector; added support for improved CSS nesting by default; support for <code>RTCRtpScriptTransform</code>, <code>ReadableStream.from</code> (allowing creation of a ReadableStream from an (async) iterable), and the <code>math-style</code> and <code>math-depth</code> CSS properties and the <code>font-size: math</code> value (desktop); and support for pasting images into contenteditable & designMode elements (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/117.0/releasenotes/ |title=Firefox 117.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 29, 2023 |access-date=August 29, 2023 |archive-date=September 23, 2023 |archive-url=https://web.archive.org/web/20230923161153/https://www.mozilla.org/en-US/firefox/117.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/117.0/releasenotes/ |title=Firefox for Android 117.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 29, 2023 |access-date=August 29, 2023 |archive-date=August 29, 2023 |archive-url=https://web.archive.org/web/20230829150956/https://www.mozilla.org/en-US/firefox/android/117.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 6.0a2
| ''Firefox 6.0 Aurora''
| May 25, 2011
| ''First Firefox 6.0 Aurora build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/05/2011-05-25-03-mozilla-aurora-debug/ |title=Mozilla Firefox 6.0 – First Aurora build |publisher=Mozilla |date=2011-05-25 |accessdate=2011-07-11}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/05/27/firefoxaurora/ |title=Mozilla Firefox 6.0 Aurora Release Announcement |publisher=The Mozilla Blog |date=2011-05-27 |accessdate=2011-07-10}}</ref>
|-


Firefox 118 was released on September 26, 2023. Major changes included the introduction of ] of web content, courtesy of the ]-funded Project Bergamot; the use of the FDLIBM math library on all systems to improve anonymity with Fingerprint Protection via web audio in the browser; the restriction of visibility of website fonts to system fonts and language pack fonts to mitigate font fingerprinting in Private Browsing windows; the availability of Video Effects and background blur on Google Meet; the ability for U.S. Firefox Suggest users to see browser add-on suggestions right in the address bar based on their keywords; support for CSS math functions round, mod, rem, pow, sqrt, hypot, log, exp, abs, and sign; OpaqueResponseBlocking enabled by default (desktop); the availability of printing page content from the browser or share menu; the opening of pinned user shortcuts in an existing tab if it already has the same URL; and the clearing of site data being moved from "Browsing history and site data" to the "Cookies and site data" menu item (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/118.0/releasenotes/ |title=Firefox 118.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 26, 2023 |access-date=September 26, 2023 |archive-date=November 8, 2023 |archive-url=https://web.archive.org/web/20231108034009/https://www.mozilla.org/en-US/firefox/118.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/118.0/releasenotes/ |title=Firefox for Android 118.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 26, 2023 |access-date=September 26, 2023}}</ref>
| style="background:pink;" | 6.0b1
| ''Firefox 6.0 Beta 1''
| July 8, 2011
| ''First Firefox 6.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/6.0beta/releasenotes/ |title=Mozilla Firefox 6.0 Beta Release Notes |publisher=Mozilla |date=2011-07-08 |accessdate=2011-07-11}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/07/08/firefoxbeta6-0-2/ |title=Mozilla Firefox 6.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2011-07-08 |accessdate=2011-07-11}}</ref>
|-


Firefox 119 was released on October 24, 2023. Major changes included the addition of Firefox view and the PDF editor; recently closed tabs now persisting between sessions that don't have automatic session restore enabled; the ability to import extensions from Google Chrome; support for the partitioning of Blob URLs, which mitigates a potential tracking vector that third-party agents could use to track an individual; the restriction of the visibility of website fonts to system fonts and language pack fonts in Enhanced Tracking Protection strict mode to mitigate font fingerprinting; an update to the Storage Access API to improve security while mitigating website breakages and further enabling the phase out of third-party cookies in the browser; the addition of Encrypted Client Hello (ECH), which extends the encryption used in TLS connections to cover more of the handshake and better protect sensitive fields; media sniffing no longer being applied to files served as type <code>application/octet-stream</code>; the ability for the mouse pointer to disappear while typing if the relevant Windows mouse properties system setting is enabled; the inclusion of the Santali (sat) language; a fix for an issue causing unexpected jumps in scroll position on Facebook; several enhancements to the Inactive CSS styles feature, which assists in identifying CSS properties that have no effect on an element; the automatic switch to a raw data view if the JSON is invalid or broken; added support for ARIA reflection for simple attributes and default Accessibility Semantics for Custom Elements; added support for <code>credentialless</code> in Cross-Origin-Embedder-Policy; added CSS attr() function for a fallback parameter; easier grouping of items by using the methods <code>Object.groupBy</code> or <code>Map.groupBy</code> (desktop); added support for the <code>prefers-contrast</code> and <code>prefers-reduced-transparency media query</code> on ]; and a fix for a crash encountered by some users in fullscreen video (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/119.0/releasenotes/ |title=Firefox 119.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 24, 2023 |access-date=October 24, 2023 |archive-date=November 9, 2023 |archive-url=https://web.archive.org/web/20231109150300/https://www.mozilla.org/en-US/firefox/119.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/119.0/releasenotes/ |title=Firefox for Android 119.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 24, 2023 |access-date=October 24, 2023 |archive-date=October 25, 2023 |archive-url=https://web.archive.org/web/20231025082945/https://www.mozilla.org/en-US/firefox/android/119.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 6.0b2
| ''Firefox 6.0 Beta 2''
| July 16, 2011
| ''Second Firefox 6.0 Beta release.''
|-


Firefox 120 was released on November 21, 2023. Major changes included added support for a new "Copy Link Without Site Tracking" feature in the context menu which ensures that copied links no longer contain tracking information; added support for a setting (in Preferences → Privacy & Security) to enable Global Privacy Control and inform websites that the user doesn't want their data to be shared or sold; the enhancement of the Canvas APIs with Fingerprinting Protection for the browser's private windows and ETP-Strict privacy configuration for the protection of users' online privacy; the enabling of Cookie Banner Blocker and URL Tracking Protection by default in private windows for all users in Germany; the import of TLS trust anchors (e.g., certificates) from the operating system root store; the addition of keyboard shortcuts for editing and deleting a selected credential on <code>about:logins</code>; the ability for Ubuntu Linux to import from Chromium when both are installed as Snap packages; added support for corner snapping on Windows and Linux for Picture-in-Picture; the addition of the User Activation API, which allows servers to send resource Link headers before the final HTTP response and improves performance on servers using this feature; the ability for users to use an added devtools feature to simulate browser tabs to be offline; the Style Editor panel's feature of a new "Pretty Print" button located in the footer of the panel, similar to the pretty print button found in the Debugger panel, used to format stylesheets (e.g., those that are minified); the Rules panel within the inspector panel no longer displaying colors in the new CSS Color 4 formats (e.g., OKLCH) as hexadecimal/named colors, ensuring that it matches the original values used; the ability for <code>lh</code> and <code>rlh</code> units to be parsed and computed correctly as lengths; the enabling of WebAssembly GC by default, which allows new languages, such as Dart or Kotlin, to run on the browser (desktop); dozens of new mobile extensions surfacing during the release cycle; and a fix for a tabs tray bug where selecting tabs could accidentally close them instead (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/120.0/releasenotes/ |title=Firefox 120.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 21, 2023 |access-date=November 21, 2023 |archive-date=November 21, 2023 |archive-url=https://web.archive.org/web/20231121174741/https://www.mozilla.org/en-US/firefox/120.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/120.0/releasenotes/ |title=Firefox for Android 120.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 21, 2023 |access-date=November 21, 2023 |archive-date=November 21, 2023 |archive-url=https://web.archive.org/web/20231121165730/https://www.mozilla.org/en-US/firefox/android/120.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 6.0b3
| ''Firefox 6.0 Beta 3''
| July 26, 2011
| ''Third Firefox 6.0 Beta release.''
|-


Firefox 121 was released on December 19, 2023. Major changes included a prompt for Windows users to install the Microsoft AV1 Video Extension to enable hardware decoding support for the AV1 video codec from <code>about:support</code> if not already installed; support for Voice Control commands on macOS systems; a default to the Wayland compositor when available instead of XWayland for Linux users; the ability to force links to always be underlined, which can be enabled in the Browsing section of the Settings menu; the floating button in the PDF viewer to simplify deleting drawings, text, and images added in PDFs; the Firefox Debugger including a new feature: an option to disable the <code>debugger;</code> keyword on the current page; the unification of the focus indicator across the toolbox, which is now larger with improved contrast, featuring a white box-shadow for enhanced visibility on blue backgrounds; added support for the <code>:has()</code> selector, which authors to match an element that has, or "anchors", at least one element matching its relative selector; added support for the <code>hanging</code> and <code>each-line</code> keywords for the text-indent CSS property, offering more convenient paragraph layout options for styles such as bibliographies, poetry, etc.; added support for the <code>balance</code> keyword for the text-wrap CSS property, which can improve the appearance of short multi-line text blocks such as long headings or captions by harmonizing the line lengths; added support for the lazy loading iframes, which are only loaded when visible, so non-critical iframes can load later when needed to speed up initial page loads, reduce initial network usage, etc.; added support for tail call elimination in WebAssembly language to improve support for functional languages (desktop); expanded extension capabilities by popular demand, adding new support for over 400 more extensions; the ability for private windows to protect users even better by blocking third-party cookies and storage of content trackers; Enhanced Tracking Protection custom mode including blocking of social trackers by default; a fix for a crash when copying to the clipboard; a fix for a crash when the fullscreen notification was encountered; a fix for rendering issues and crashes on Google Pixel 8 and Samsung Galaxy S22 devices (Android); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/121.0/releasenotes/ |title=Firefox 121.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 19, 2023 |access-date=December 19, 2023 |archive-date=March 17, 2024 |archive-url=https://web.archive.org/web/20240317075819/https://www.mozilla.org/en-US/firefox/123.0.1/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/121.0/releasenotes/ |title=Firefox for Android 121.0, See All New Features, Updates and Fixes |website=Mozilla |date=December 19, 2023 |access-date=December 19, 2023 |archive-date=December 19, 2023 |archive-url=https://web.archive.org/web/20231219141942/https://www.mozilla.org/en-US/firefox/android/121.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 6.0b4
| ''Firefox 6.0 Beta 4''
| August 1, 2011
| ''Fourth Firefox 6.0 Beta release.''
|-


Firefox 122 was released on January 23, 2024. Major changes included new displays of images and descriptions for search suggestions when provided by the search engine; improvement in the quality of translated webpages in the translations feature; added support for creating and using passkeys stored in the iCloud Keychain on macOS; the availability of MDN Web Docs article suggestions from Firefox Suggest in the address bar for users searching for web development-related information; the line breaking rules of Web content matching the Unicode Standard, improving Web Browser compatibility for line breaking; a new <nowiki>.deb</nowiki> package for Linux users on Ubuntu, Debian, and Linux Mint; a fix for keyboard navigation in Inspector Rules view; enabled offset-position property which is useful for most of the offset-path values; added support for ray(), basic-shape and coord-box to the offset-path CSS property; added support for rect() and xywh() basic shapes on clip-path and offset-path CSS properties; added support for animating the SVG viewBox attribute using SMIL <code>by animations</code>; LargestContentfulPaint API, which provides timing information about the largest image or text paint before users interact with a web page; added support for hr in select, allowing websites to easily use separators inside a <code>select</code> element; added support for the showpicker method on <code><select></code> elements; the fallback URL parser for unknown schemes changed to <code>DefaultURI</code>, improving specification adherence and web compatibility; the ArrayBuffer.prototype.transfer proposal methods, which enables transferring ownership of ArrayBuffer data; added support for the Screen Wake Lock API; recognition of the "webauthn" autocomplete token; the ability for scripts to store <code>cacheAPI</code> data in Private Browsing mode; the tainting of filters that use currentColor as an input to further protect user privacy; Uneven Level Protection Forward Error Correction (ULPFEC) turned on by default (desktop); added default PDF reader; added support for enabling Global Privacy Control; the OS version being reported as "Android 10" for Android's User-Agent string to reduce user fingerprinting information and the risk of some website compatibility issues (Adnroid); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/122.0/releasenotes/ |title=Firefox 122.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 23, 2024 |access-date=January 23, 2024 |archive-date=January 27, 2024 |archive-url=https://web.archive.org/web/20240127213010/https://www.mozilla.org/en-US/firefox/122.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/122.0/releasenotes/ |title=Firefox for Android 122.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 23, 2024 |access-date=January 23, 2024 |archive-date=January 23, 2024 |archive-url=https://web.archive.org/web/20240123141538/https://www.mozilla.org/en-US/firefox/android/122.0/releasenotes/ |url-status=live }}</ref>
| style="background:pink;" | 6.0b5
| ''Firefox 6.0 Beta 5''
| August 5, 2011
| ''Fifth Firefox 6.0 Beta release.''
|-


Firefox 123 was released on February 20, 2024. Major changes included the integration of search into Firefox View, allowing the user to search through all of the tabs on each of the section subpages - Recent Browsing, Open Tabs, Recently Closed Tabs, Tabs from other devices, or History; the Web Compatibility Reporting Tool; the ability to translate text in tooltips (i.e. titles) and text displayed in form controls (i.e. placeholder) when translating web pages; the implementation of the address bar settings in the Firefox Settings' Search section; the support for the Network Monitor for saving a response body to disk through the ''Save Response As'' context menu item; the implementation of linearRGB interpolation for SVG gradients, as well as the existing sRGB interpolation; the SVG content falling back to use the default replaced element values of 300px width and 150px height and the feImage no longer failing to render; added support for Early Hints by enabling Preload and Modulepreload support; the application of audio echo cancellation to microphone inputs when the audio output is redirected to another device with <code>setSinkId()</code>; added support for declarative ShadowDOM, providing developers greater flexibility and improved ergonomics when working with ShadowDOMs directly within HTML (desktop); the report of ARM64 Linux's CPU architecture as "x86_64" and ARM and x86 Android's as "armv81" in the User-Agent string and the <code>navigator.platform</code> and <code>navigator.oscpu</code> Web APIs (Android); improved PGO optimizations for macOS ARM64 and Android; the off-main-thread canvas on macOS, Linux and Android; and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/123.0/releasenotes/ |title=Firefox 123.0, See All New Features, Updates and Fixes |website=Mozilla |date=February 20, 2024 |access-date=February 20, 2024 |archive-date=February 20, 2024 |archive-url=https://web.archive.org/web/20240220144700/https://www.mozilla.org/en-US/firefox/123.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/123.0/releasenotes/ |title=Firefox for Android 123.0, See All New Features, Updates and Fixes |website=Mozilla |date=February 20, 2024 |access-date=February 20, 2024 |archive-date=February 20, 2024 |archive-url=https://web.archive.org/web/20240220191318/https://www.mozilla.org/en-US/firefox/android/123.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 6.0
| ''Firefox 6.0''
| August 16, 2011
| ''Official Firefox 6.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/6.0/releasenotes/ |title=Mozilla Firefox 6.0 Release Notes |publisher=Mozilla |date=2011-08-16 |accessdate=February 7, 2012}}</ref>
* about:permissions, a permissions manager. The user can choose what information can be shared with sites, e.g. location.
* The address bar now highlights the domain of the website you're visiting.
* Streamlined the look of the site identity block.
* Added support for the latest draft version of ]s with a prefixed API.
* Added support for EventSource / server-sent events.
* Added support for <code>window.matchMedia</code>.
* Added Scratchpad, an interactive JavaScript prototyping environment.
* Added a new Web Developer menu item and moved development-related items into it.
* Improved usability of the Web Console.
* Improved the discoverability of Firefox Sync.
* Reduced browser startup time when using Panorama.
* Fixed several stability and security issues.
|-


Firefox 124 was released on March 19, 2024. Major changes included the caret browsing mode now working in the PDF viewer; open tabs now being sorted by either recent activity (which is set by default) or tab order in Firefox View; the population of the Windows taskbar jump list more efficiently, which should allow for a smoother overall browsing experience; the use of the macOS fullscreen API for all types of fullscreen windows; the expansion of Qwant's availability to all languages in the France region along with Belgium, Italy, the Netherlands, Spain, and Switzerland; various security fixes; added support for <nowiki>AbortSignal.any</nowiki>; the ability to use HTTP(S) and relative URLs when creating WebSockets (desktop); the enabling of Pull to Refresh by default; and added support for HTML drag and drop API (which accepts plain text or HTML text by drop operation from external applications) when using a mouse (Android).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/124.0/releasenotes/ |title=Firefox 124.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 19, 2024 |access-date=March 19, 2024 |archive-date=March 19, 2024 |archive-url=https://web.archive.org/web/20240319123904/https://www.mozilla.org/en-US/firefox/124.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/124.0/releasenotes/ |title=Firefox for Android 124.0, See All New Features, Updates and Fixes |website=Mozilla |date=March 19, 2024 |access-date=March 19, 2024 |archive-date=March 19, 2024 |archive-url=https://web.archive.org/web/20240319120646/https://www.mozilla.org/en-US/firefox/android/124.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 6.0.1
| ''Firefox 6.0.1''
| August 30, 2011
| ''Off-cycle security update.''
* Revoked the root certificate for DigiNotar due to fraudulent SSL certificate issuance.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/6.0.1/releasenotes/ |title=Mozilla Firefox 6.0.1 Release Notes |publisher=Mozilla |date=2011-08-30 |accessdate=April 22, 2012}}</ref>
|-


Firefox 125 was released for Android, while Firefox 125.0.1 was released for desktop, both on April 16, 2024. Major changes included added support for the AV1 codec for Encrypted Media Extensions (EME), enabling higher-quality playback from video streaming providers; added support for text highlighting for the PDF viewer; the display of pinned tabs in the Open tabs section for Firefox View; the prompt for U.S. and Canadian users to save their addresses upon submitting an address form, allowing the browser to autofill stored address information in the future; the ability to more proactively block downloads from URLs that are considered to be potentially untrustworthy; the URL Paste Suggestion feature providing a convenient way for users to quickly visit URLs copied to the clipboard in the browser address bar; the ability for users of tab-specific Container add-ons to search in the Address Bar for tabs that are open in different containers; an option to enable Web Proxy Auto-Discovery (WPAD) while configured to use system proxy settings; the tab key now only reaching the first option rather than cycling through all available options in a group of radio buttons where no option is selected, and the ability for the arrow keys to navigate between options as they do when there is a selected option, making keyboard navigation more efficient and consistent; the option to disable the Pause Debugger Overlay that appears over the page content when the debugger pauses JavaScript execution; a new drop-down menu button at the bottom of the source view in the Debugger panel, specifically designed for Source Map related actions; added support for the <code>popover</code> global attribute used for designating an element as a popover element; the enabling of WebAssembly multi-memory by default; added support for Unicode Text Segmentation to JavaScript; added support for <code>contextlost</code> and <code>contextrestored</code> events on HTMLCanvasElement and OffscreenCanvas to allow user code to recover from context loss with hardware accelerated 2D canvas; added support for the <code><nowiki>navigator.clipboard.readText()</nowiki></code> web API; added support for the <code>content-box</code> and <code>stroke-box</code> keywords of the <code>transform-box</code> CSS property; the <code>align-content</code> property working in block layout, allowing block direction alignment without needing a flex or grid container; removal of support for <code><nowiki>SVGAElement.text</nowiki></code> in favor of the more widely-implemented <code><nowiki>SVGAElement.textContent</nowiki></code> method (desktop); recognition of the theme selection (Dark, Light, Follow Device) setting on Custom Tabs; various improvements to the "Logins and Passwords" settings menu; removal of "Open in App" button when the browser is set as the default PDF Viewer; removal of the variant and extension of BCP47 in the Accept-Language header of HTTP requests for better interoperability with other browsers (Android); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/125.0.1/releasenotes/ |title=Firefox 125.0.1, See All New Features, Updates and Fixes |website=Mozilla |date=April 16, 2024 |access-date=April 16, 2024 |archive-date=April 16, 2024 |archive-url=https://web.archive.org/web/20240416154930/https://www.mozilla.org/en-US/firefox/125.0.1/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/125.0/releasenotes/ |title=Firefox for Android 125.0, See All New Features, Updates and Fixes |website=Mozilla |date=April 16, 2024 |access-date=April 16, 2024 |archive-date=April 16, 2024 |archive-url=https://web.archive.org/web/20240416172533/https://www.mozilla.org/en-US/firefox/android/125.0/releasenotes/ |url-status=live }}</ref>
| style="background:salmon;" | 6.0.2
| ''Firefox 6.0.2''
| September 6, 2011
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/6.0.2/releasenotes/ |title=Mozilla Firefox 6.0.2 Release Notes |publisher=Mozilla |date=2011-09-06 |accessdate=April 22, 2012}}</ref>
* Removed trust exceptions for certificates issued by Staat der Nederlanden
* Resolved an issue with gov.uk websites.
* Last release for Android 2.0
''on September 27, 2011''.
|-


Firefox 126 was released on May 14, 2024. Major changes included the Copy Without Site Tracking option that can now remove parameters from nested URLs, and includes expanded support for blocking over 300 tracking parameters from copied links, including those from major shopping websites; support for Content-encoding: zstd (zstandard compression), which is an alternative to broti and gzip compression for web content, and can provide higher compression levels for the same CPU used, or conversely lower server CPU use to get the same compression; the addition of the Catalan language; enabled AV1 hardware decode acceleration on macOS for M3 Macs; added telemetry to create an aggregate count of searches by category to broadly inform search feature development; the temporary disabling of the URL Paste Suggestion feature while a potential performance issue was being investigated; an option to disable/enable the Developer Tools' split console feature; the implementation of <nowiki>URL.parse()</nowiki>; the enabling of the CSS zoom property by default following a lot of web compatibility and standardization work in the CSSWG; added support for CSS Custom <code>:state()</code> and <code>CustomStateSet</code> pseudo-classes; added support for Screen Wake Lock API; added support for <nowiki>IDBFactory.databases</nowiki> for enumeration of IndexedDB databases (desktop); a fix for issues with the address toolbar on devices with foldable screens; the renaming of "Add-ons" settings to "Extensions" (Android); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/126.0/releasenotes/ |title=Firefox 126.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 14, 2024 |access-date=May 14, 2024 |archive-date=May 13, 2024 |archive-url=https://web.archive.org/web/20240513202356/https://www.mozilla.org/en-US/firefox/126.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/126.0/releasenotes/ |title=Firefox for Android 126.0, See All New Features, Updates and Fixes |website=Mozilla |date=May 14, 2024 |access-date=May 14, 2024 |archive-date=May 14, 2024 |archive-url=https://web.archive.org/web/20240514154734/https://www.mozilla.org/en-US/firefox/android/126.0/releasenotes/ |url-status=live }}</ref>
| style="vertical-align:top;" rowspan="9" | ''']'''
| style="background:pink;" | 7.0a1
| ''Firefox 7.0 Nightly''
| May 25, 2011
| ''First Firefox 7.0 Nightly build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/05/2011-05-25-03-mozilla-central-debug/ |title=Mozilla Firefox 7.0 – First Nightly build |publisher=Mozilla |date=2011-05-25 |accessdate=2011-07-11}}</ref>
|-


Firefox 127 was released on June 11, 2024. Major changes included setting the browser to auto-launch, which optimizes efficiency in our browser-centric digital routines, eliminating manual startup delays and facilitating immediate web access; the enabling of DNS prefetching for HTTPS documents via the <code>rel="dns-prefetch"</code> link hint; the ''Close duplicate tabs'' command available from the ''List all tabs'' widget in the tab bar or a tab context menu; the ability to autimatically upgrade <img>, <audio>, and <video> elements from HTTP to HTTPS if they are embedded within an HTTPS page; the requirement of a device sign-in when accessing and filling stored passwords in the Password Manager about:logins page in macOS and Windows; the report of the CPU architecture for 32-bit x86 Linux as x86_64 in the User-Agent string and <code>navigator.platform</code> and <code>navigator.oscpu</code> Web APIs; links and other focusable elements now tab-navigable by default on macOS, instead of following macOS' "Keyboard navigation" setting; support of the Screenshots feature for taking screenshots of file types like SVG, XML, and more as well as various about: pages within the browser; the screenshot tool being more accessible to everyone by implementing new keyboard shortcuts and adding theme compatibility and High Contrast Mode (HCM) support; improvement of performance for capturing large screenshots; the enabling of <code>navigator.clipboard.read()/write()</code> (desktop); a new ''Passwords'' item added to the three-dot menu; numpad on a physical keyboard being used to commit URLs entered in the toolbar; Web content translation; improvement of compiler optimization settings, improving responsiveness, reducing page load times, and extending battery life; the Recently Saved section home page changed into the Bookmarks section (Android); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/127.0/releasenotes/ |title=Firefox 127.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 11, 2024 |access-date=June 11, 2024 |archive-date=June 10, 2024 |archive-url=https://web.archive.org/web/20240610234119/https://www.mozilla.org/en-US/firefox/127.0/releasenotes/ |url-status=live }}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/127.0/releasenotes/ |title=Firefox for Android 127.0, See All New Features, Updates and Fixes |website=Mozilla |date=June 11, 2024 |access-date=June 11, 2024}}</ref>
| style="background:pink;" | 7.0a2
| ''Firefox 7.0 Aurora''
| July 6, 2011
| ''First Firefox 7.0 Aurora build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/07/2011-07-06-04-20-05-mozilla-aurora/ |title=Mozilla Firefox 7.0 – First Aurora build |publisher=Mozilla |date=2011-07-06 |accessdate=2011-07-11}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/07/07/firefoxaurora7/ |title=Mozilla Firefox 7.0 Aurora Release Announcement |publisher=The Mozilla Blog |date=2011-07-07 |accessdate=2011-07-11}}</ref>
|-


=== Firefox 128 through 139 ===
| style="background:pink;" | 7.0b1
Firefox 128 and Firefox 128 ESR were released on July 9, 2024. Major changes included the ability to translate selections of text and hyperlinked text to other languages from the context menu; the ability to show recent searches or currently trending searches when U.S. and Canadian users open the Address Bar to get them back to their previous search session or inspire the next one; a simpler and more unified dialog for clearing user data, which provides insights into the site data size corresponding to the selected time range in addition to streamlining data categories; added support for playback of protected content from streaming sites like ] while in Private Browsing mode; added support for the experimental Privacy Preserving Attribution API, which provides an alternative to user tracking for ad attribution; microphone capture through getUserMedia now using system-provided voice processing when applicable, improving audio quality on macOS; the Saraiki (skr) language; the proxy of DNS by default when using SOCKS v5, avoiding leaking DNS queries to the network when using SOCKS v5 proxies; added support for rendering more <code>text/*</code> file types inline, rather than requiring them to be downloaded to be viewed; the renewal of the root certificate used to verify add-ons and signed content to avoid upcoming expiration; the display of CSS rules specificity in a tooltip when hovering a CSS rule selector in the Inspector Rules view; the ability for the Inspector panel to flag a custom property declaration as invalid when the value does not match the registered custom property definition; improvements to Inactive CSS displaying a warning when <code>column-span</code> is used on elements outside of multi-column containers and when properties only applying to replaced elements are used on non-replaced elements; added support for Resizeable ArrayBuffers and Growable SharedArrayBuffers in SpiderMonkey; the ability of the setCodecPreferences method to allow applications to disable the negotiation of specific codecs (including RTX/RED/FEC), and an application to cause a remote peer to prefer the codec that appears first in the list for sending; the change of the Accept header for images and documents to better align with the Fetch standard and other browsers; added support for <code>@property</code> and the CSS properties-and-values API; the provision of a new <code>bytes()</code> method on many objects like Request/Response and Blob that provides a convenient way of getting an Uint8Array typed array (desktop); the ability for users of Android 14 and up to create and use Passkeys in third-party Passkey management applications; the "confirm password" field filled in when suggesting a password; selecting "approximate location" now working when prompted or geolocation permission; the browser no longer forcing the display into landscape mode when entering full-screen mode with an audio element playing, or forcing the page to open back in the app if "ask before opening" is set when sharing a link from an app (Android); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/128.0/releasenotes/ |title=Firefox 128.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 9, 2024 |access-date=July 9, 2024 |archive-url=https://web.archive.org/web/20240730015532/https://www.mozilla.org/en-US/firefox/128.0/releasenotes/ |archive-date=July 30, 2024 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/128.0esr/releasenotes/ |title=Firefox ESR 128.0esr, See All New Features, Updates and Fixes |website=Mozilla |date=July 9, 2024 |access-date=July 9, 2024 |archive-url=https://web.archive.org/web/20240709155037/https://www.mozilla.org/en-US/firefox/128.0esr/releasenotes/ |archive-date=July 9, 2024 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/128.0/releasenotes/ |title=Firefox for Android 128.0, See All New Features, Updates and Fixes |website=Mozilla |date=July 9, 2024 |access-date=July 9, 2024 |archive-url=https://web.archive.org/web/20240709130423/https://www.mozilla.org/en-US/firefox/android/128.0/releasenotes/ |archive-date=July 9, 2024 |url-status=live}}</ref>
| ''Firefox 7.0 Beta 1''
| August 18, 2011
| ''First Firefox 7.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/7.0beta/releasenotes/ |title=Mozilla Firefox 7.0 Beta Release Notes |publisher=Mozilla |date=2011-08-18 |accessdate=2011-08-20}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/08/18/firefoxbeta7/ |title=Mozilla Firefox 7.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2011-08-18 |accessdate=2011-08-20}}</ref>
|-


Firefox 129 was released on August 6, 2024. Major changes included the addition of an enhanced Text and Layout menu in Reader View with new options for character spacing, word spacing, and text alignment; a Theme menu with additional Contrast and Gray options, with the ability for the user to select custom colors for text, background, and links from the Custom tab; the display of a Tab preview when hovering the mouse over background tabs, making it easier to locate the desired tab without needing to switch tabs; the replacement of HTTP with HTTPS as the default protocol in the address bar on non-local sites; added support for multiple languages in the same document spoken in macOS VoiceOver; Address Autofill for users in France and Germany; added support for more inactive CSS warnings, including cases where the <code>resize</code> and <code>float</code> properties used incorrectly, <code>box-sizing</code> is used on elements that ignore width/height, and table-related CSS properties are not on table-related elements; the ability for the Network Blocking feature in the Network panel to block HTTP requests in addition to blocking responses; the Rules side panel in the Inspector panel displaying <code>@starting-style</code> rules, as well as a tooltip for the var() function, indicating the <code>@starting-style</code> CSS custom properties value; the Rules side panel showing the impact of invalid at computed-value time custom property declarations in the computed panel; added support for querying the encryption key system config in mediaCapabilities.decodingInfo() API; added support for Float16Array typed arrays along with new DataView methods for reading and setting Float16 values, and a <code>Math.f16round()</code> static method that can be used to round numbers to 16 bits; added support for <code>@starting-style</code>, which allows to define styles that are applied to an element when it is first rendered, enabling transitions on elements that are added to the DOM or that have their display type changed from none to another value; added support for the transition-behavior CSS property; added support for the <code>textInput</code> event; added support for DNS lookup of HTTPS Resource Records (RR) with the native DNS resolver, increasing HTTPS coverage and facilitating the use of Encrypted Client Hello (ECH) if present in HTTPS RR (desktop); the availability of downloading languages to facilitate offline Translations (Android); the resolution of HTTPS DNS records with the operating system's DNS resolver on specific platforms; and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/129.0/releasenotes/ |title=Firefox 129.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 6, 2024 |access-date=August 6, 2024 |archive-url=https://web.archive.org/web/20240806160537/https://www.mozilla.org/en-US/firefox/129.0/releasenotes/ |archive-date=August 6, 2024 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/129.0/releasenotes/ |title=Firefox for Android 129.0, See All New Features, Updates and Fixes |website=Mozilla |date=August 6, 2024 |access-date=August 6, 2024 |archive-url=https://web.archive.org/web/20240806161902/https://www.mozilla.org/en-US/firefox/android/129.0/releasenotes/ |archive-date=August 6, 2024 |url-status=live}}</ref>
| style="background:pink;" | 7.0b2
| ''Firefox 7.0 Beta 2''
| August 26, 2011
| ''Second Firefox 7.0 Beta release.''
|-


Firefox 130 was released on September 3, 2024. Major changes included translating selected text portions to different languages after a full-page translation; an easy way to try experimental features with a new Firefox Labs page in Settings, such as the AI Chatbot feature letting users add the chatbot of their choice to the sidebar for quick access as they browse, and the Picture-in-Picture auto-open experiment enabling PiP on active videos when switching tabs; the enabling of overscroll animations as the default behavior for scrollable areas on Linux; a fix for an issue where <code>Copy</code> and <code>Paste</code> context menu items intermittently were not enabled when expected; WebCryptoAPI now supporting Curve25519 primitives (Ed25519 signatures and X25519 key generation); the Web Codecs API being enabled on desktop platforms, allowing low-level access to audio and video encoders and decoders (desktop); improved page load performance by allowing more resources to be downloaded simultaneously; the availability of the password generator feature, which gives users the opportunity to use a strong, random, automatically generated password whenever they are creating new accounts (Android); various security fixes; and added support for the Catalan, Croatian, Czech, Danish, Indonesian, Latvian, Lithuanian, Romanian, Serbian, Slovak, and Vietnamese languages (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/130.0/releasenotes/ |title=Firefox 130.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 3, 2024 |access-date=September 3, 2024 |archive-url=https://web.archive.org/web/20240903181214/https://www.mozilla.org/en-US/firefox/130.0/releasenotes/ |archive-date=September 3, 2024 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/130.0/releasenotes/ |title=Firefox for Android 130.0, See All New Features, Updates and Fixes |website=Mozilla |date=September 3, 2024 |access-date=September 3, 2024 |archive-url=https://web.archive.org/web/20240903161705/https://www.mozilla.org/en-US/firefox/android/130.0/releasenotes/ |archive-date=September 3, 2024 |url-status=live}}</ref>
| style="white-space:nowrap; background:pink;" |7.0b4 <ref group="t">Builds of version 7.0b3 were created, but not released.</ref>
| ''Firefox 7.0 Beta 4''
| September 6, 2011
| ''Third Firefox 7.0 Beta release.''
|-


Firefox 131 was released on October 1, 2024. Major changes included an offer to temporarily remember when users grant permissions to sites (e.g. geolocation), to be removed either after one hour or when the tab is closed; the display of a tab preview when hovering the mouse over background tabs, making it easier to locate the desired tab without needing to switch tabs; the ability to take into consideration languages previously used for translations when suggesting a default translation language; the re-introduction of the ability to navigate to the search engine home page when the search bar is empty by using <code>shift-enter/shift-click</code>; the Tab overview (List all tabs) menu's new, refreshed icon; the removal of <code>SVGGraphicsElement.nearestViewportElement</code> and <code>SVGGraphicsElement.farthestViewportElement</code> as part of the ongoing updates to SVG 2; added support for text fragments, which allows users to link directly to a specific portion of text in a web document via a special URL fragment; the rejection of <code>SameSite=None</code> cookies when there is no <code>Secure</code> attribute included; added support for Cookies Having Independent Partitioned State (CHIPS), allowing developers to opt a cookie into storage partitioned per top-level site (desktop); the ability for users to enable protection against suspected fingerprinters using custom and strict enhanced tracking protection options; the ability to save bookmarks in the folder where users last added a bookmark, instead of defaulting to the top-level bookmarks folder (Android); various security fixes; and support for the Swedish language by translation.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/131.0/releasenotes/ |title=Firefox 131.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 1, 2024 |access-date=October 1, 2024 |archive-url=https://web.archive.org/web/20241001171356/https://www.mozilla.org/en-US/firefox/131.0/releasenotes/ |archive-date=October 1, 2024 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/131.0/releasenotes/ |title=Firefox for Android 131.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 1, 2024 |access-date=October 1, 2024 |archive-url=https://web.archive.org/web/20241001183121/https://www.mozilla.org/en-US/firefox/android/131.0/releasenotes/ |archive-date=October 1, 2024 |url-status=live}}</ref>
| style="background:pink;" | 7.0b5
| ''Firefox 7.0 Beta 5''
| September 9, 2011
| ''Fourth Firefox 7.0 Beta release.''
|-


Firefox 132 was released on October 29, 2024. Major changes included Microsoft PlayReady encrypted media playback being rolled out to select sites on Windows; Wide Color Gamut WebGL for Windows and macOS; WebRender hardware accelerated rendering enabled for most SVG filter primitives, improving performance for certain graphics-heavy content; added support for macOS' new screen and window sharing selection features on macOS 15 and later; enhanced macOS session resume feature and an automatic relaunch of the browser if it was open before a system restart, like after an OS update; the ability to block third-party cookie access when Enhanced Tracking Protection's Strict mode is enabled; the blocking of HTTP-favicons if they can not be received over HTTPS instead; the Copy Without Site Tracking grayed out when no known tracking parameters are found within the link; the addition of more tracking parameter support for websites such as LinkedIn and Shopee; the removal of support for HTTP/2 Push due to compatibility issues with various sites; console logging in service workers being functional again; restored support for debugging remote devices via USB; added support for a post-quantum key exchange mechanism for TLS 1.3 (mlkem768x25519) which secures communications against advanced / long-term threats; added support for Certificate Compression which reduces the size and increases the speed of a TLS handshake; text directionality computation updated to follow the latest model defined in the HTML specification, improving interoperability with other web browsers; the availability of the <code>requestVideoFrameCallback()</code> method on the <code>HTMLVideoElement</code> interface, which enables developers to perform efficient operations on each video frame; the <code>getCapabilities</code> method allowing applications to gather the media capabilities supported for the live MediaStreamTrack; the <code>fetchpriority</code> attribute enabling web developers to optimize resource loading by specifying the relative priority of resources to be fetched by the browser; the disabling of the heuristic granting storage access for some window openings (desktop); the address bar's default position moved to the top of the screen for new users; the use of <code>resizes-visual</code> as the default value of the <code>interactive-widget</code> property of the viewport <code><meta></code> element (Android); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/132.0/releasenotes/ |title=Firefox 132.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 29, 2024 |access-date=November 4, 2024 |archive-url=https://web.archive.org/web/20241104043658/https://www.mozilla.org/en-US/firefox/132.0/releasenotes/ |archive-date=November 4, 2024 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/132.0/releasenotes/ |title=Firefox for Android 132.0, See All New Features, Updates and Fixes |website=Mozilla |date=October 29, 2024 |access-date=November 4, 2024 |archive-url=https://web.archive.org/web/20241104211121/https://www.mozilla.org/en-US/firefox/android/132.0/releasenotes/ |archive-date=November 4, 2024 |url-status=live}}</ref>
| style="background:pink;" | 7.0b6
| ''Firefox 7.0 Beta 6''
| September 19, 2011
| ''Fifth Firefox 7.0 Beta release.''
|-


Firefox 133 was released on November 26, 2024. Major changes included a new anti-tracking feature, Bounce Tracking Protection, which is now available in Enhanced Tracking Protection's "Strict" mode; the sidebar to view tabs from other devices that can now open via the Tab overview menu; the enabling of GPU-accelerated Canvas2D by default on Windows providing a performance improvement; the "Picture-in-Picture: auto-open on tab switch" feature from Firefox Labs behaving more reliably across a wider range of sites, automatically opening relevant videos while ignoring others; the adjustment of the "expire" attribute value by adding the difference between the server and local times when server time is available; added support for the <code>keepalive</code> option in the Fetch API, which allows developers to make HTTP requests that can continue to run even after the page is unloaded, such as during page navigation or closing; added support for the Permissions API in <code>Worker</code> Context; the dispatch of beforetoggle events just before a dialog opens and toggle events after the dialog closes, matching the behavior of popovers; the availability of methods on UInt8Array to convert to and from Base64 and hexadecimal encodings, which is an implementation of a Stage 3 TC39 proposal; added support for image decoding as part of the WebCodecs API (desktop); the enabling of desktop mode browsing by default for large devices; the treatment of text copied to the clipboard in Private Browsing mode as sensitive content and the masking of clipboard notifications for added privacy on Android 13 and later (Android); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/133.0/releasenotes/ |title=Firefox 133.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 26, 2024 |access-date=November 26, 2024 |archive-url=https://archive.today/20241126192620/https://www.mozilla.org/en-US/firefox/133.0/releasenotes/ |archive-date=November 26, 2024 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/133.0/releasenotes/ |title=Firefox for Android 133.0, See All New Features, Updates and Fixes |website=Mozilla |date=November 26, 2024 |access-date=November 26, 2024 |archive-url=https://web.archive.org/web/20241126185017/https://www.mozilla.org/en-US/firefox/android/133.0/releasenotes/ |archive-date=November 26, 2024 |url-status=live}}</ref>
| style="background:salmon;" | 7.0
| ''Firefox 7.0''
| September 27, 2011
| ''Official Firefox 7.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/7.0/releasenotes/ |title=Mozilla Firefox 7.0 Release Notes |publisher=Mozilla |date=2011-09-27 |accessdate=2012-02-07}}</ref>
* Drastically improved memory handling for certain use cases.
* Added a new rendering backend to speed up Canvas operations on Windows systems.
* Bookmark and password changes now sync almost instantly when using Firefox Sync.
* The <code>http://</code> URL prefix is now hidden by default.
* Added support for text-overflow: ellipsis.
* Added support for the Web Timing specification.
* Enhanced support for MathML.
* The WebSocket protocol has been updated from version 7 to version 8.
* Added an opt-in system for users to send performance data back to Mozilla to improve future versions of Firefox.
* Fixed several security and stability issues.
* Last release for Maemo
|-


Firefox 134 was released on January 7, 2025. Major changes included added support for touchpad hold gestures on Linux; added support for hardware-accelerated playback of HEVC video content on Windows; the expansion of Ecosia's availability to all languages in the German region along with Austria, Belgium, Italy, Netherlands, Spain, Sweden and Switzerland; the ability to follow the model HTML specification for transient user activation more closely, which makes popup blocking less strict in cases where previous versions were overly aggressive, reducing erroneous blocking prompts; a refreshed New Tab layout being rolled out to users in the US and Canada, featuring a repositioned logo and weather widget to prioritize Web Search, Shortcuts, and Recommended Stories at the top; improved support for debugging web extensions, such as automatically reloading the web extension's source code in the Debugger when the extension is reloaded; Debugger log-point values automatically converted into profiler markers, making it easy to add information to the marker timeline directly from the Debugger; the Network panel displaying information about Early Hints, including a dedicated indicator for the 103 HTTP status code in the user interface (desktop); and various security fixes (both).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/134.0/releasenotes/ |title=Firefox 134.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 7, 2025 |access-date=January 7, 2025 |archive-url=https://web.archive.org/web/20250107173517/https://www.mozilla.org/en-US/firefox/134.0/releasenotes/ |archive-date=January 7, 2025 |url-status=live}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/134.0/releasenotes/ |title=Firefox for Android 134.0, See All New Features, Updates and Fixes |website=Mozilla |date=January 7, 2025 |access-date=January 7, 2025 |archive-url=https://web.archive.org/web/20250107232322/https://www.mozilla.org/en-US/firefox/android/134.0/releasenotes/ |archive-date=January 7, 2025 |url-status=live}}</ref>
| style="background:salmon;" | 7.0.1
| ''Firefox 7.0.1''
| September 29, 2011
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/7.0.1/releasenotes/ |title=Mozilla Firefox 7.0.1 Release Notes |publisher=Mozilla |date=2011-09-29 |accessdate=April 22, 2012}}</ref>
* Fixed a rare issue where some users could find one or more of their add-ons hidden after a Firefox update.
''on November 8, 2011''.
|-

| style="vertical-align:top;" rowspan="10" | ''']'''
| style="background:pink;" | 8.0a1
| ''Firefox 8.0 Nightly''
| July 6, 2011
| First Firefox 8.0 Nightly build.<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/07/2011-07-06-03-08-33-mozilla-central/ |title=Mozilla Firefox 8.0 – First Nightly build |publisher=Mozilla |date=2011-07-06 |accessdate=2011-07-11}}</ref>
|-

| style="background:pink;" | 8.0a2
| ''Firefox 8.0 Aurora''
| August 19, 2011
| ''First Firefox 8.0 Aurora build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/08/2011-08-17-04-20-04-mozilla-aurora/ |title=Mozilla Firefox 8.0 – First Aurora build |publisher=Mozilla |date=2011-08-17 |accessdate=2011-08-20}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/08/19/firefoxaurora8/ |title=Mozilla Firefox 8.0 Aurora Release Announcement |publisher=The Mozilla Blog |date=2011-08-19 |accessdate=2011-08-20}}</ref>
|-

| style="background:pink;" | 8.0b1
| ''Firefox 8.0 Beta 1''
| September 29, 2011
| ''First Firefox 8.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/8.0beta/releasenotes/ |title=Mozilla Firefox 8.0 Beta Release Notes |publisher=Mozilla |date=2011-09-29 |accessdate=2011-09-30}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/09/30/firefoxbeta8/ |title=Mozilla Firefox 8.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2011-09-30 |accessdate=2011-09-30}}</ref>
|-

| style="background:pink;" | 8.0b2
| ''Firefox 8.0 Beta 2''
| October 10, 2011
| ''Second Firefox 8.0 Beta release.''
|-

| style="background:pink;" | 8.0b3
| ''Firefox 8.0 Beta 3''
| October 13, 2011
| ''Third Firefox 8.0 Beta release.''
|-

| style="background:pink;" | 8.0b4
| ''Firefox 8.0 Beta 4''
| October 19, 2011
| ''Fourth Firefox 8.0 Beta release.''
|-

| style="background:pink;" | 8.0b5
| ''Firefox 8.0 Beta 5''
| October 27, 2011
| ''Fifth Firefox 8.0 Beta release.''
* Removed support for new tab animation due to incompatibilities with some extensions.
|-

| style="background:pink;" | 8.0b6
| ''Firefox 8.0 Beta 6''
| November 1, 2011
| ''Sixth Firefox 8.0 Beta release.''
|-

| style="background:salmon;" | 8.0
| ''Firefox 8.0''
| November 8, 2011
| ''Official Firefox 8.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/8.0/releasenotes/ |title=Mozilla Firefox 8.0 Release Notes |publisher=Mozilla |date=2011-11-08 |accessdate=10 November 2011}}</ref>
* Add-ons installed by third-party programs are now disabled by default.
* Added a one-time add-on selection dialog to manage previously installed add-ons.
* Added ] to the search bar.
* Added a preference to load tabs on demand, improving startup time when windows are restored.
* Improved performance and memory handling when using <audio> and <video> elements.
* Added ] (CORS) support for cross-domain textures in WebGL.
* Added support for HTML5 context menus.
* Added support for <code>insertAdjacentHTML()</code>.
* Improved CSS hyphen support for many languages.
* Improved WebSocket support.
|-

| style="background:salmon;" | 8.0.1
| ''Firefox 8.0.1''
| November 21, 2011
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/8.0.1/releasenotes/ |title=Mozilla Firefox 8.0.1 Release Notes |publisher=Mozilla |date=2011-11-21 |accessdate=2011-11-25}}</ref>
* Fixed Mac&nbsp;OS&nbsp;X crash that occurred in certain instances when a Java Applet is loaded with Java SE 6 version 1.6.0_29 installed.
* Fixed Windows startup crash caused by RoboForm versions older than 7.6.2.
''on December 20, 2011''.
|-

| style="vertical-align:top;" rowspan="10" | ''']'''
| style="background:pink;" | 9.0a1
| ''Firefox 9.0 Nightly''
| August 17, 2011
| First Firefox 9.0 Nightly build.<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/08/2011-08-17-06-11-21-mozilla-central/ |title=Mozilla Firefox 9.0 – First Nightly build |publisher=Mozilla |date=2011-08-17 |accessdate=2011-08-20}}</ref>
|-

| style="background:pink;" | 9.0a2
| ''Firefox 9.0 Aurora''
| September 28, 2011
| ''First Firefox 9.0 Aurora build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/09/2011-09-28-04-20-14-mozilla-aurora/ |title=Mozilla Firefox 9.0 – First Aurora build |publisher=Mozilla |date=2011-09-28 |accessdate=2011-09-28}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/09/30/firefoxaurora9/ |title=Mozilla Firefox 9.0 Aurora Release Announcement |publisher=The Mozilla Blog |date=2011-09-30 |accessdate=2011-11-03}}</ref>
|-

| style="background:pink;" | 9.0b1
| ''Firefox 9.0 Beta 1''
| November 11, 2011
| ''First Firefox 9.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/9.0beta/releasenotes/ |title=Mozilla Firefox 9.0 Beta Release Notes |publisher=Mozilla |date=2011-11-11 |accessdate=2011-12-14}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/11/10/firefoxbeta9/ |title=Mozilla Firefox 9.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2011-11-10 |accessdate=2011-12-14}}</ref>
|-

| style="background:pink;" | 9.0b2
| ''Firefox 9.0 Beta 2''
| November 17, 2011
| ''Second Firefox 9.0 Beta release.''
|-

| style="background:pink;" | 9.0b3
| ''Firefox 9.0 Beta 3''
| November 24, 2011
| ''Third Firefox 9.0 Beta release.''
|-

| style="background:pink;" | 9.0b4
| ''Firefox 9.0 Beta 4''
| December 1, 2011
| ''Fourth Firefox 9.0 Beta release.''
|-

| style="background:pink;" | 9.0b5
| ''Firefox 9.0 Beta 5''
| December 8, 2011
| ''Fifth Firefox 9.0 Beta release.''
|-

| style="background:pink;" | 9.0b6
| ''Firefox 9.0 Beta 6''
| December 15, 2011
| ''Sixth Firefox 9.0 Beta release.''
|-

| style="background:salmon;" | 9.0
|''Firefox 9.0''
|December 20, 2011
|Official Firefox 9.0 release.<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/9.0/releasenotes/ |title=Mozilla Firefox 9.0 Release Notes |publisher=Mozilla |date=2011-12-20 |accessdate=22 December 2011}}</ref>
* Added ], significantly improving JavaScript performance.
* Improved theme integration for Mac&nbsp;OS&nbsp;X Lion.
* Added two finger swipe navigation for Mac&nbsp;OS&nbsp;X Lion.
* Added support for querying ] status via JavaScript.
* Added support for the <code>font-stretch</code> CSS property.
* Improved support for the <code>text-overflow</code> CSS property.
* Improved standards support for HTML5, MathML, and CSS.
|-

| style="background:salmon;" | 9.0.1
|''Firefox 9.0.1''
|December 21, 2011
|''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/9.0.1/releasenotes/ |title=Mozilla Firefox 9.0.1 Release Notes |publisher=Mozilla |date=2011-12-21 |accessdate=2011-12-22}}</ref>
* Fixed crash on Windows, Mac and Linux
''on January 31, 2012''.
|}

==== Versions 10 through 19 ====

{{#section:Firefox release history|color table}}

{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-

| style="vertical-align:top;" rowspan="24" | ''']'''
| style="background:pink;" | 10.0a1
| ''Firefox 10.0 Nightly''
| September 28, 2011
| First Firefox 10.0 Nightly build.<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/09/2011-09-28-03-08-55-mozilla-central/ |title=Mozilla Firefox 10.0 – First Nightly build |publisher=Mozilla |date=2011-09-28 |accessdate=2011-09-28}}</ref>
|-

| style="background:pink;" | 10.0a2
| ''Firefox 10.0 Aurora''
| November 9, 2011
| ''First Firefox 10.0 Aurora build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/11/2011-11-09-04-20-32-mozilla-aurora/ |title=Mozilla Firefox 10.0 – First Aurora build |publisher=Mozilla |date=2011-11-09 |accessdate=2011-11-10}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/11/11/firefoxaurora10/ |title=Mozilla Firefox 10.0 Aurora Release Announcement |publisher=The Mozilla Blog |date=2011-11-11 |accessdate=2011-11-12}}</ref>
|-

| style="background:pink;" | 10.0b1
| ''Firefox 10.0 Beta 1''
| December 22, 2011
| ''First Firefox 10.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0beta/releasenotes/ |title=Mozilla Firefox 10.0 Beta Release Notes |publisher=Mozilla |date=2011-12-22 |accessdate=2011-12-31}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/12/23/firefox-beta-with-new-developer-tools-and-enhanced-sync-is-ready-for-testing/ |title=Mozilla Firefox 10.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2011-12-23 |accessdate=2011-12-31}}</ref>
|-

| style="background:pink;" | 10.0b2
| ''Firefox 10.0 Beta 2''
| December 28, 2011
| ''Second Firefox 10.0 Beta release.''
|-

| style="background:pink;" | 10.0b3
| ''Firefox 10.0 Beta 3''
| January 4, 2012
| ''Third Firefox 10.0 Beta release.''
|-

| style="background:pink;" | 10.0b4
| ''Firefox 10.0 Beta 4''
| January 13, 2012
| ''Fourth Firefox 10.0 Beta release.''
|-

| style="background:pink;" | 10.0b5
| ''Firefox 10.0 Beta 5''
| January 20, 2012
| ''Fifth Firefox 10.0 Beta release.''
|-

| style="background:pink;" | 10.0b6
| ''Firefox 10.0 Beta 6''
| January 26, 2012
| ''Sixth Firefox 10.0 Beta release.''
|-

| style="background:salmon;" | 10.0
| ''Firefox 10.0''
| rowspan="2" | January 31, 2012
| rowspan="2" | ''Official Firefox 10.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0/releasenotes/ |title=Mozilla Firefox 10.0 Release Notes |publisher=Mozilla |date=2012-01-31 |accessdate=2012-01-31}}</ref> First Extended Support Release (ESR).<ref>{{cite web|url=https://wiki.mozilla.org/Enterprise/Firefox/ExtendedSupport:Proposal |title=Mozilla Firefox Extended Support Release Proposal |publisher=Mozilla |date=2012-01-18 |accessdate=2012-01-25}}</ref>
* Most add-ons are now compatible with new versions of Firefox by default.
* Anti-Aliasing for WebGL is now implemented.
* CSS3 3D-Transforms are now supported.
* New <nowiki><bdi></nowiki> element for bi-directional text isolation, along with supporting CSS properties.
* Full Screen APIs allow you to build a web application that runs full screen.
| rowspan="2" |<ref group="Note" name="10.0"/>
|-

| style="background:salmon;" | 10.0esr
| ''Firefox 10.0esr''
|-

| style="background:salmon;" | 10.0.1
| ''Firefox 10.0.1''
| rowspan="2" | February 10, 2012
| rowspan="2" | ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.1/releasenotes/ |title=Mozilla Firefox 10.0.1 Release Notes |publisher=Mozilla |date=2012-02-10 |accessdate=2012-02-10}}</ref>
| rowspan="2" |<ref group="Note" name="10.0.1"/>
|-

| style="background:salmon;" | 10.0.1esr
| ''Firefox 10.0.1esr''
|-

| style="background:salmon;" | 10.0.2
| ''Firefox 10.0.2''
| rowspan="2" | February 16, 2012
| rowspan="2" | ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.2/releasenotes/ |title=Mozilla Firefox 10.0.2 Release Notes |publisher=Mozilla |date=2012-02-16 |accessdate=2012-02-16}}</ref>
* Fixed Java applets that sometimes caused text input to become unresponsive.
''on March 13, 2012''.
| rowspan="2" |<ref group="Note" name="10.0.2"/>
|-

| style="background:salmon;" | 10.0.2esr
| ''Firefox 10.0.2esr''
|-

| style="background:salmon;" | 10.0.3esr
| ''Firefox 10.0.3esr''
| March 13, 2012
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.3/releasenotes/ |title=Mozilla Firefox 10.0.3 Release Notes |publisher=Mozilla |date=2012-03-13 |accessdate=2012-03-17}}</ref>
* Security fixes<ref>{{cite web |url=https://www.mozilla.org/security/known-vulnerabilities/firefoxESR.html |title=Security Advisories for Firefox |publisher=Mozilla |date=March 13, 2012 |accessdate=April 22, 2012}}</ref>
* Fixed web workers running out of memory, affecting some add-ons used by organizations.
|-

| style="background:salmon;" | 10.0.4esr
| ''Firefox 10.0.4esr''
| April 24, 2012
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.4/releasenotes/ |title=Mozilla Firefox 10.0.4 Release Notes |publisher=Mozilla |date=2012-04-24 |accessdate=2012-04-24}}</ref>
* Fixed an issue in Firefox ESR 10.0.3 that caused the "Whats New" page to open after an update.
* Fixed extensions.checkCompatibility.* prefs not working in ESR releases.
|-

| style="background:salmon;" | 10.0.5esr
| ''Firefox 10.0.5esr''
| June 5, 2012
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.5/releasenotes/ |title=Mozilla Firefox 10.0.5 Release Notes |publisher=Mozilla |date=2012-06-05 |accessdate=2012-05-06}}</ref>
* Fixed the 10.0.5 Firefox top crash with signature .
|-

| style="background:salmon;" | 10.0.6esr
| ''Firefox 10.0.6esr''
| July 17, 2012
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.6/releasenotes/ |title=Mozilla Firefox 10.0.6 Release Notes |publisher=Mozilla |date=2012-07-17 |accessdate=2012-07-17}}</ref>
* Fixed some text editing inconsistencies.
|-

| style="background:salmon;" | 10.0.7esr
| ''Firefox 10.0.7esr''
| August 28, 2012
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.7/releasenotes/ |title=Mozilla Firefox 10.0.7 Release Notes |publisher=Mozilla |date=2012-08-28 |accessdate=2012-07-17}}</ref>
* Fixed contenteditable breaks in 10.0.7 that middle-click to open links.
* Addressed a fix that allows specifying wildcard that matches all simple netbiosnames in network.automatic-ntlm-auth.trusted-uris.
|-

| style="background:salmon;" | 10.0.8esr
| ''Firefox 10.0.8esr''
| October 9, 2012
| ''Regular security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.8/releasenotes/ |title=Mozilla Firefox 10.0.8 Release Notes |publisher=Mozilla |date=2012-10-09 |accessdate=2012-10-10}}</ref>
|-

| style="background:Salmon;" | 10.0.9esr
| ''Firefox 10.0.9esr''
| October 12, 2012
| ''Off-cycle security update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.9/releasenotes/ |title=Mozilla Firefox 10.0.9 Release Notes |publisher=Mozilla |date=2012-10-12 |accessdate=2012-10-15}}</ref>
|-

| style="background:salmon;" | 10.0.10esr
| ''Firefox 10.0.10esr''
| October 26, 2012
| ''Off-cycle security update.''<ref name="MA RN">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.10/releasenotes/ |title=Mozilla Firefox 10.0.10 Release Notes |publisher=] |accessdate=October 26, 2012}}</ref>
|-

| style="background:salmon;" | 10.0.11esr
| ''Firefox 10.0.11esr''
| November 20, 2012
| ''Off-cycle security update.''<ref name="MOZILLA RN">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.11/releasenotes/ |title=Mozilla Firefox 10.0.11 Release Notes |publisher=] |accessdate=November 20, 2012}}</ref>
|-

| style="background:salmon;" | 10.0.12esr
| ''Firefox 10.0.12esr''
| January 8, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 10.0.12esr Release notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/10.0.12/releasenotes/ |title=Mozilla Firefox 10.0.12 Release Notes |publisher=] |date=January 8, 2013 |accessdate=January 8, 2013}}</ref> ''on February 19, 2013''.
|-

| style="vertical-align:top;" rowspan="11" | ''']'''
| style="background:pink;" | 11.0a1
| ''Firefox 11.0 Nightly''
| November 9, 2011
| ''First Firefox 11.0 Nightly build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/11/2011-11-09-03-11-11-mozilla-central/ |title=Mozilla Firefox 11.0 – First Nightly build |publisher=Mozilla |date=2011-11-09 |accessdate=2011-11-10}}</ref>
|-

| style="background:pink;" | 11.0a2
| ''Firefox 11.0 Aurora''
| December 21, 2011
| ''First Firefox 11.0 Aurora build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/12/2011-12-21-17-28-48-mozilla-aurora/ |title=Mozilla Firefox 11.0 – First Aurora build |publisher=Mozilla |date=2011-12-21 |accessdate=2011-12-31}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2011/12/23/firefoxaurora11/ |title=Mozilla Firefox 11.0 Aurora Release Announcement |publisher=The Mozilla Blog |date=2011-12-23 |accessdate=2011-12-31}}</ref>
|-

| style="background:pink;" | 11.0b1
| ''Firefox 11.0 Beta 1''
| February 3, 2012
| ''First Firefox 11.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/11.0beta/releasenotes/ |title=Mozilla Firefox 11.0 Beta Release Notes |publisher=Mozilla |date=2012-02-03 |accessdate=2012-03-17}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2012/02/03/firefoxbeta11/ |title=Mozilla Firefox 11.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2012-02-03 |accessdate=2012-03-17}}</ref>
|-

| style="background:pink;" | 11.0b2
| ''Firefox 11.0 Beta 2''
| February 10, 2012
| ''Second Firefox 11.0 Beta release.''
|-

| style="background:pink;" | 11.0b3
| ''Firefox 11.0 Beta 3''
| February 17, 2012
| ''Third Firefox 11.0 Beta release.''
|-

| style="background:pink;" | 11.0b4
| ''Firefox 11.0 Beta 4''
| February 24, 2012
| ''Fourth Firefox 11.0 Beta release.''
|-

| style="background:pink;" | 11.0b5
| ''Firefox 11.0 Beta 5''
| March 2, 2012
| ''Fifth Firefox 11.0 Beta release.''
|-

| style="background:pink;" | 11.0b6
| ''Firefox 11.0 Beta 6''
| March 9, 2012
| ''Sixth Firefox 11.0 Beta release.''
|-

| style="background:pink;" | 11.0b7
| ''Firefox 11.0 Beta 7''
| March 9, 2012
| ''Seventh Firefox 11.0 Beta release.''
|-

| style="background:pink;" | 11.0b8
| ''Firefox 11.0 Beta 8''
| March 11, 2012
| ''Eighth Firefox 11.0 Beta release.''
|-

| style="background:salmon;" | 11.0
| ''Firefox 11.0''
| March 13, 2012
| ''Official Firefox 11.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/11.0/releasenotes/ |title=Mozilla Firefox 11.0 Release Notes |publisher=Mozilla |date=2012-03-13 |accessdate=2012-03-17}}</ref>
* Migration of settings from ].
* ] protocol support (disabled by default).
* RFC 6455 ] protocol support with an unprefixed API.
* Page Inspector Tilt (3D View).
* Sync Add-ons.
* Redesigned HTML5 video controls.
* Style Editor (CSS).
''on April 24, 2012''.
|-

| style="vertical-align:top;" rowspan="9" | ''']'''
| style="background:pink;" | 12.0a1
| ''Firefox 12.0 Nightly''
| December 20, 2011
| ''First Firefox 12.0 Nightly build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2011/12/2011-12-20-11-28-24-mozilla-central/ |title=Mozilla Firefox 12.0 – First Nightly build |publisher=Mozilla |date=2011-12-20 |accessdate=2011-12-31}}</ref>
|-

| style="background:pink;" | 12.0a2
| ''Firefox 12.0 Aurora''
| February 2, 2012
| ''First Firefox 12.0 Aurora build.''<ref>{{cite web|url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2012/02/2012-02-02-04-20-10-mozilla-aurora/ |title=Mozilla Firefox 12.0 – First Aurora build |publisher=Mozilla |date=2012-02-02 |accessdate=2012-03-17}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2012/02/03/firefoxaurora12/ |title=Mozilla Firefox 12.0 Aurora Release Announcement |publisher=The Mozilla Blog |date=2012-02-03 |accessdate=2012-03-17}}</ref>
|-

| style="background:pink;" | 12.0b1
| ''Firefox 12.0 Beta 1''
| March 16, 2012
| ''First Firefox 12.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/12.0beta/releasenotes/ |title=Mozilla Firefox 12.0 Beta Release Notes |publisher=Mozilla |date=2012-03-16 |accessdate=2012-03-17}}</ref><ref>{{cite web|url=http://blog.mozilla.com/futurereleases/2012/03/16/firefox-beta-improves-developer-tools-and-update-process/ |title=Mozilla Firefox 12.0 Beta Release Announcement |publisher=The Mozilla Blog |date=2012-03-16 |accessdate=2012-03-17}}</ref>
|-

| style="background:pink;" | 12.0b2
| ''Firefox 12.0 Beta 2''
| March 22, 2012
| ''Second Firefox 12.0 Beta release.''
|-

| style="background:pink;" | 12.0b3
| ''Firefox 12.0 Beta 3''
| March 30, 2012
| ''Third Firefox 12.0 Beta release.''
|-

| style="background:pink;" | 12.0b4
| ''Firefox 12.0 Beta 4''
| April 5, 2012
| ''Fourth Firefox 12.0 Beta release.''
|-

| style="background:pink;" | 12.0b5
| ''Firefox 12.0 Beta 5''
| April 16, 2012
| ''Fifth Firefox 12.0 Beta release.''
|-

| style="background:pink;" | 12.0b6
| ''Firefox 12.0 Beta 6''
| April 18, 2012
| ''Sixth Firefox 12.0 Beta release.''
|-

| style="background:salmon;" | 12.0
| ''Firefox 12.0''
| April 24, 2012
| ''Official Firefox 12.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/12.0/releasenotes/ |title=Mozilla Firefox 12 Release Notes |publisher=Mozilla.org |date=April 24, 2012 |accessdate=April 24, 2012}}</ref>
* Windows: Firefox is now easier to update with one less prompt (User Account Control).
* Last release for Windows 2000.<ref>https://blog.mozilla.org/futurereleases/2012/03/23/upcoming-firefox-support-changes/</ref>
* Reintroduced on-demand loading of pinned tabs after restoring a session.
* Page Source now has line numbers.
* Line breaks are now supported in the title attribute.
* Improvements to "Find in Page" to center search result.
* URLs pasted into the download manager window are now automatically downloaded.
* Support for the text-align-last CSS property has been added.
* Experimental support for ECMAScript 6 Map and Set objects has been implemented.
* Some TinyMCE-based editors failed to load.
* OS X: WebGL performance may be degraded on some hardware.
''on June 5, 2012''.
|-

| style="vertical-align:top;" rowspan="11" | ''']'''
| style="background:pink;" | 13.0a1
| ''Firefox 13.0 Nightly''
| February 1, 2012
| ''First Firefox 13.0 Nightly build.''
|-

| style="background:pink;" | 13.0a2
| ''Firefox 13.0 Aurora''
| March 19, 2012
| ''First Firefox 13.0 Aurora build.''
|-

| style="background:pink;" | 13.0b1
| ''Firefox 13.0 Beta 1''
| April 26, 2012
| ''First Firefox 13.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/13.0beta/releasenotes/ |title=Mozilla Firefox 13.0 Beta Release Notes |publisher=Mozilla |date=2012-04-26 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/13.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:pink;" | 13.0b2
| ''Firefox 13.0 Beta 2''
| May 3, 2012
| ''Second Firefox 13.0 Beta release.''
|-

| style="background:pink;" | 13.0b3
| ''Firefox 13.0 Beta 3''
| May 15, 2012
| ''Third Firefox 13.0 Beta release.''
|-

| style="background:pink;" | 13.0b4
| ''Firefox 13.0 Beta 4''
| May 17, 2012
| ''Fourth Firefox 13.0 Beta release.''
|-

| style="background:pink;" | 13.0b5
| ''Firefox 13.0 Beta 5''
| May 25, 2012
| ''Fifth Firefox 13.0 Beta release.''
|-

| style="background:pink;" | 13.0b6
| ''Firefox 13.0 Beta 6''
| May 30, 2012
| ''Sixth Firefox 13.0 Beta release.''
|-

| style="background:pink;" | 13.0b7
| ''Firefox 13.0 Beta 7''
| June 1, 2012
| ''Seventh Firefox 13.0 Beta release.''
|-

| style="background:salmon;" | 13.0
| ''Firefox 13.0''
| June 5, 2012
| ''Official Firefox 13.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/13.0/releasenotes/ |title=Mozilla Firefox 13 Release Notes |publisher=Mozilla.org |date=2012-06-05 |accessdate=2012-06-06}}</ref>
* When opening a new tab, users are now presented with their most visited pages.
* The default home page now has quicker access to bookmarks, history, settings, and more.
* SPDY protocol now enabled by default for faster browsing on supported sites.
* Restored background tabs are not loaded by default for faster startup.
* Smooth scrolling is now enabled by default.
* 72 total improvements to Page Inspector, HTML panel, Style Inspector, Scratchpad and Style Editor.
* The column-fill CSS property has been implemented.
* Experimental support for ECMAScript 6 Map and Set objects has been implemented.
* Support for the CSS3 background-position property extended syntax has been added.
* The :invalid pseudo-class can now be applied to the element.
* The CSS turn angle unit is now supported.
|-

| style="background:salmon;" | 13.0.1
| ''Firefox 13.0.1''
| June 15, 2012
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/13.0.1/releasenotes/ |title=Mozilla Firefox 13.0.1 Release Notes |publisher=Mozilla |date=2012-06-15 |accessdate=2012-06-16}}</ref>
* Fixed an issue when Windows Messenger did not load in Hotmail, and the Hotmail inbox did not auto-update.
* Fixed the Hebrew text that was sometimes rendered incorrectly.
* Fixed an issue in ] that sometimes caused a crash on quit.
''on July 17, 2012''.
|-

| style="vertical-align:top;" rowspan="11" | ''']'''
| style="background:pink;" | 14.0a1
| ''Firefox 14.0 Nightly''
| March 14, 2012
| ''First Firefox 14.0 Nightly build.''
|-

| style="background:pink;" | 14.0a2
| ''Firefox 14.0 Aurora''
| April 27, 2012
| ''First Firefox 14.0 Aurora build.''
|-

| style="background:pink;" | 14.0b6
| ''Firefox 14.0 Beta 6''
| June 7, 2012
| ''First Firefox 14.0 Beta release.''<ref>{{cite web |url=http://www.camp-firefox.de/node/516 |title=Beta 6 to be first beta version of Firefox |publisher=Camp-Firefox (German) |accessdate=2012-06-08 }}</ref><ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/14.0beta/releasenotes/ |title=Mozilla Firefox 14.0 Beta Release Notes |publisher=Mozilla |date=2012-06-07 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/14.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:pink;" | 14.0b7
| ''Firefox 14.0 Beta 7''
| June 14, 2012
| ''Second Firefox 14.0 Beta release.''
|-

| style="background:pink;" | 14.0b8
| ''Firefox 14.0 Beta 8''
| June 22, 2012
| ''Third Firefox 14.0 Beta release.''
|-

| style="background:pink;" | 14.0b9
| ''Firefox 14.0 Beta 9''
| June 25, 2012
| ''Fourth Firefox 14.0 Beta release.''
|-

| style="background:pink;" | 14.0b10
| ''Firefox 14.0 Beta 10''
| July 2, 2012
| ''Fifth Firefox 14.0 Beta release.''
|-

| style="background:pink;" | 14.0b11
| ''Firefox 14.0 Beta 11''
| July 6, 2012
| ''Sixth Firefox 14.0 Beta release.''
|-

| style="background:pink;" | 14.0b12
| ''Firefox 14.0 Beta 12''
| July 11, 2012
| ''Seventh Firefox 14.0 Beta release.''
|-

| style="background:salmon;" | 14.0
| ''Firefox 14.0''
| June 26, 2012
| '''Android'''
''Official Firefox Mobile 14.0 release.''
<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/14.0a2/auroranotes/ |title=Mozilla Firefox 14 Aurora Release Notes |publisher=Mozilla.org |accessdate=April 27, 2012}}</ref><ref>{{cite web|url=http://www.ghacks.net/2012/07/17/firefox-14-0-1-available-why-there-wont-be-a-firefox-14-0-release/|title=Firefox 14.0.1 available, Why there won't be a Firefox 14.0 release|last=Brinkmann|first=Martin|publisher=ghacks.net|date=2012-07-17|accessdate=2012-07-17}}</ref>
* Google searches now utilize ].
* Full screen support for Mac&nbsp;OS&nbsp;X Lion implemented.
* Plugins can now be configured to only load on click (about:config).
* The Awesome Bar now auto-completes typed URLs.
* Improved site identity manager, to prevent spoofing of an ] connection with ]s.
* Pointer Lock API implemented.
* New ] to prevent your display from sleeping.
* New text-transform and font-variant ] improvements for Turkic languages and Greek.
* Long URLs now extend the status bar almost to the whole width of the viewport.
* ] backend for HTML5 video to allow ] playback (needs to be enabled at compile time).
|-

| style="background:salmon;" | 14.0.1
| ''Firefox 14.0.1''
| July 17, 2012
| '''Desktop'''
''Official Firefox Desktop 14.0 release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/14.0.1/releasenotes/ |title=Mozilla Firefox 14.0.1 Release Notes |publisher=Mozilla |date=2012-07-17 |accessdate=2012-07-17}}</ref>
* Fixed the GIF animation that can get stuck when src and image size are changed.
* Mac OS X: Fixed the nsCocoaWindow::ConstrainPosition that uses wrong screen in multi-display setup.
* Fixed the CSS :hover regression when an element's class name is set by JavaScript.
''on August 28, 2012''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:pink;" | 15.0a1
| ''Firefox 15.0 Nightly''
| April 25, 2012
| ''First Firefox 15.0 Nightly build.''
|-

| style="background:pink;" | 15.0a2
| ''Firefox 15.0 Aurora''
| June 5, 2012
| ''First Firefox 15.0 Aurora build.''
|-

| style="background:pink;" | 15.0b1
| ''Firefox 15.0 Beta 1''
| July 19, 2012
| ''First Firefox 15.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/15.0beta/releasenotes/ |title=Mozilla Firefox 15.0 Beta Release Notes |publisher=Mozilla |date=2012-07-19 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/15.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:salmon;" | 15.0
| ''Firefox 15.0''
| August 28, 2012
| ''Official Firefox 15.0 release.''<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/15.0/releasenotes// |title=Mozilla Firefox 15.0 Release Notes |publisher=Mozilla.org |date=2012-08-28 |accessdate=2012-08-28}}</ref>
* Silent update: Background updates.
* Support for ] networking protocol v3.
* WebGL enhancements, including compressed textures for better performance.
* Localization in ].
* Optimized memory usage for add-ons.
* JavaScript debugger integrated into developer tools.
* New layout view added to Inspector.
* High precision event timer implemented.
* The CSS word-break property has been implemented.
* New responsive design tool allows web developers to switch between desktop and mobile views of sites.
* Native support for the ] added.
* The <audio> and <video> elements now support the played attribute.
* The source element now supports the media attribute.
* Fixed the focus rings that keep growing when repeatedly tabbing through elements.
|-

| style="background:salmon;" | 15.0.1
| ''Firefox 15.0.1''
| September 6, 2012
| ''Off-cycle stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/15.0.1/releasenotes/ |title=Mozilla Firefox 15.0.1 Release Notes |publisher=Mozilla |date=2012-09-06 |accessdate=2012-09-10}}</ref>
* Addressed a fix where sites visited while in Private Browsing mode could be found through manual browser cache inspection.
''on October 9, 2012''.
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:pink;" | 16.0a1
| ''Firefox 16.0 Nightly''
| June 5, 2012
| ''First Firefox 16.0 Nightly build.''
|-

| style="background:pink;" | 16.0a2
| ''Firefox 16.0 Aurora''
| July 17, 2012
| ''First Firefox 16.0 Aurora build.''
|-

| style="background:pink;" | 16.0b1
| ''Firefox 16.0 Beta 1''
| August 30, 2012
| ''First Firefox 16.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/16.0beta/releasenotes/ |title=Mozilla Firefox 16.0 Beta Release Notes |publisher=Mozilla |date=2012-08-30 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/16.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:salmon;" | 16.0
| ''Firefox 16.0''
| October 9, 2012
| ''Official Firefox 16.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/16.0/releasenotes/ |title=Mozilla Firefox 16.0 Release Notes |publisher=Mozilla.org |date=2012-10-09 |accessdate=2012-10-10}}</ref>
* Firefox on Mac&nbsp;OS&nbsp;X now has preliminary VoiceOver support turned on by default.
* Initial web app support (Windows/Mac/Linux).
* Acholi and Kazakh localizations added.
* Improvements around JavaScript responsiveness through incremental garbage collection.
* New Developer Toolbar with buttons for quick access to tools, error count for the Web Console, and a new command line for quick keyboard access.
* CSS3 Animations, Transitions, Transforms and Gradients unprefixed.
* Recently opened files list in Scratchpad implemented.
* Fixed an issue where debugger breakpoints do not catch on page reload.
* No longer supporting MD5 as a hash algorithm in digital signatures.
* ] support by default.
* Reverse animation direction has been implemented.
* Per tab reporting in about:memory.
* User Agent strings for pre-release Firefox versions now show only major version.
|-

| style="background:salmon;" | 16.0.1
| ''Firefox 16.0.1''
| October 11, 2012
| ''Off-cycle security and stability update.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/16.0.1/releasenotes/ |title=Mozilla Firefox 16.0.1 Release Notes |publisher=Mozilla |date=2012-10-11 |accessdate=2012-10-11}}</ref>
|-

| style="background:salmon;" | 16.0.2
| ''Firefox 16.0.2''
| October 26, 2012
| ''Off-cycle security and stability update.''<ref name="Mozilla">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/16.0.2/releasenotes/ |title=Mozilla Firefox 16.0.2 Release Notes |publisher=] |accessdate=October 26, 2012}}</ref>
*Last release for Mac&nbsp;OS&nbsp;X Leopard (Intel)
''on November 20, 2012''.
|-

| style="vertical-align:top;" rowspan="18" | ''']'''
| style="background:pink;" | 17.0a1
| ''Firefox 17.0 Nightly''
| July 17, 2012
| ''First Firefox 17.0 Nightly build.''
|-

| style="background:pink;" | 17.0a2
| ''Firefox 17.0 Aurora''
| August 28, 2012
| ''First Firefox 17.0 Aurora build.''
|-

| style="background:pink;" | 17.0b1
| ''Firefox 17.0 Beta 1''
| October 9, 2012
| ''First Firefox 17.0 Beta release.''
|-

| style="background:pink;" | 17.0b6
| ''Firefox 17.0 Beta 6''
| October 11, 2012
| ''Second Firefox 17.0 Beta release.''<ref name="Mozilla Release Notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/17.0beta/releasenotes/ |title=Mozilla Firefox 17.0 Beta 6 Release Notes |publisher=] |accessdate=October 11, 2012}}</ref>
|-

| style="background:salmon;" | 17.0
| ''Firefox 17.0''
| November 20, 2012
| ''Official Firefox 17.0 release.''<ref name="MZ RD">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/17.0/releasenotes/ |title=Mozilla Firefox 17.0 Release notes |publisher=] |date=November 20, 2012 |accessdate=November 20, 2012}}</ref>
* First revision of the Social API and support for Facebook Messenger.
* Click-to-play blocklisting implemented to prevent vulnerable plugin versions from running without the user's permission.
* Updated Awesome Bar experience with larger icons.
* Mac OS X 10.5 is no longer supported.
* JavaScript Maps and Sets are now iterable.
* SVG FillPaint and StrokePaint implemented.
* Improvements that make the Web Console, Debugger and Developer Toolbar faster and easier to use.
* New Markup panel in the Page Inspector allows easy editing of the DOM.
* Sandbox attribute for iframes implemented, enabling increased security.
* Over twenty performance improvements, including fixes around the New Tab page.
* Fixed pointer lock that doesn't work in web apps.
* Fixed page scrolling on sites with fixed headers.
|-

| style="background:salmon;" | 17.0esr
| ''Firefox 17.0esr''
| November 20, 2012
| ''Official Firefox 17.0 Extended Support Release (ESR).''
|-

| style="background:salmon;" | 17.0.1
| ''Firefox 17.0.1''
| November 30, 2012
| ''Off-cycle stability update.''<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/17.0.1/releasenotes/ |title=Mozilla Firefox 17.0.1 Release notes |publisher=] |accessdate=December 2, 2012}}</ref>
* Reverted user agent change causing some website incompatibilities.
* Fixed font rendering issue.
''on January 8, 2013''.
|-

| style="background:salmon;" | 17.0.1esr
| ''Firefox 17.0.1esr''
| November 30, 2012
| ''Off-cycle stability update.''
|-

| style="background:salmon;" | 17.0.2esr
| ''Firefox 17.0.2esr''
| January 8, 2013
| ''Regular security and stability updates.''
* Fixed improvements to the Click-to-Play vulnerable plugin blocklisting feature.<ref name="Mozilla Firefox 17.0.2 ESR Release notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/17.0.2/releasenotes/ |title=Mozilla Firefox 17.0.2 Release Notes |publisher=] |date=January 8, 2013 |accessdate=January 8, 2013}}</ref>
|-

| style="background:salmon;" | 17.0.3esr
| ''Firefox 17.0.3esr''
| February 19, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.3 ESR Release notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/17.0.3/releasenotes/ |title=Mozilla Firefox 17.0.3 Release Notes |publisher=] |date=February 19, 2013 |accessdate=February 19, 2013}}</ref>
|-

| style="background:salmon;" | 17.0.4esr
| ''Firefox 17.0.4esr''
| March 7, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.4 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.4/releasenotes/ |title=Mozilla Firefox 17.0.4 Release Notes |publisher=] |date=March 7, 2013 |accessdate=March 11, 2013}}</ref>
|-

| style="background:salmon;" | 17.0.5esr
| ''Firefox 17.0.5esr''
| April 2, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.5 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.5/releasenotes/ |title=Mozilla Firefox 17.0.5 Release Notes |publisher=] |date=April 2, 2013 |accessdate=April 3, 2013}}</ref>
|-

| style="background:salmon;" | 17.0.6esr
| ''Firefox 17.0.6esr''
| May 10, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.6 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.6/releasenotes/ |title=Mozilla Firefox 17.0.6 Release Notes |publisher=] |date=May 10, 2013 |accessdate=May 14, 2013}}</ref>
|-

| style="background:salmon;" | 17.0.7esr
| ''Firefox 17.0.7esr''
| June 25, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.7 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.7/releasenotes/ |title=Mozilla Firefox 17.0.7 Release Notes |publisher=] |date=June 25, 2013 |accessdate=June 26, 2013}}</ref>
|-

| style="background:Salmon;" | 17.0.8esr
| ''Firefox 17.0.8esr''
| August 6, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.8 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.8/releasenotes/ |title=Mozilla Firefox 17.0.8 Release Notes |publisher=] |date=August 6, 2013 |accessdate=August 5, 2013}}</ref>
|-

| style="background:Salmon;" | 17.0.9esr
| ''Firefox 17.0.9esr''
| September 17, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.9 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.9/releasenotes/ |title=Mozilla Firefox 17.0.9 Release Notes |publisher=] |date=September 17, 2013 |accessdate=September 17, 2013}}</ref>
|-

| style="background:Salmon;" | 17.0.10esr
| ''Firefox 17.0.10esr''
| October 29, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 17.0.10 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.10/releasenotes/ |title=Mozilla Firefox 17.0.10 Release Notes |publisher=] |date=October 29, 2013 |accessdate=October 29, 2013}}</ref>
|-

| style="background:Salmon;" | 17.0.11esr
| ''Firefox 17.0.11esr''
| November 15, 2013
| ''Off-cycle stability update.''<ref name="Mozilla Firefox 17.0.11 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/17.0.10/releasenotes/ |title=Mozilla Firefox 17.0.11 Release Notes |publisher=] |date=November 15, 2013 |accessdate=November 18, 2013}}</ref>
* Updated ESR17 to NSS 3.14.5 RTM.
''on December 10, 2013''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:pink;" | 18.0a1
| ''Firefox 18.0 Nightly''
| August 28, 2012
| ''First Firefox 18.0 Nightly build.''
* Adds a Metro user interface on Windows 8.
|-

| style="background:pink;" | 18.0a2
| ''Firefox 18.0 Aurora''
| October 9, 2012
| ''First Firefox 18.0 Aurora build.''
|-

| style="background:pink;" | 18.0b1
| ''Firefox 18.0 Beta 1''
| November 20, 2012
| ''First Firefox 18.0 Beta release.''
|-

| style="background:pink;" | 18.0b7
| ''Firefox 18.0 Beta 7''
| November 26, 2012
| ''Seventh Firefox 18.0 Beta release.''<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/18.0beta/releasenotes/ |title=Mozilla Firefox 18.0 Beta 7 Release Notes |publisher=mozilla.org |date=November 26, 2012 |accessdate=January 8, 2013}}</ref>
|-

| style="background:Salmon;" | 18.0
| ''Firefox 18.0''
| January 8, 2013
| ''Official Firefox 18.0 release.''<ref name="Mozilla Firefox 18.0 Release notes">{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/18.0/releasenotes/ |title=Mozilla Firefox 18.0 Release Notes |publisher=] |date=January 8, 2013 |accessdate=January 8, 2013}}</ref>
* Faster JavaScript performance via ] compiler.
* Support for ]s on OS&nbsp;X 10.7 and up.
* Preliminary support for ].
* Better image quality with Mozilla's new HTML scaling algorithm.
* Performance improvements around tab switching.
* Support for new ] property <code>window.devicePixelRatio</code>.
* Improvement in startup time through smart handling of signed extension certificates.
* Support for W3C touch events implemented, taking the place of MozTouch events.
* Disable insecure content loading on ] pages.
* Improved responsiveness for users on proxies.
|-

| style="background:Salmon;" | 18.0.1
| ''Firefox 18.0.1''
| January 18, 2013
| ''Off-cycle stability update.''<ref name="Mozilla 18.0.1 Release notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/18.0.1/releasenotes/ |title=Mozilla Firefox 18.0.1 Release Notes |publisher=] |date=January 18, 2013 |accessdate=January 19, 2013}}</ref>
* Fixed problems involving ] Proxy Transactions.
* Fixed unity player crashes on Mac&nbsp;OS&nbsp;X.
* Disabled HIDPI support on external monitors to avoid rendering glitches.
|-

| style="background:Salmon;" | 18.0.2
| ''Firefox 18.0.2''
| February 5, 2013
| ''Off-cycle stability update.''<ref name="Mozilla 18.0.2 Release notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/18.0.2/releasenotes/ |title=Mozilla Firefox 18.0.2 Release Notes |publisher=] |date=January 5, 2013 |accessdate=January 6, 2013}}</ref> ''on February 19, 2013''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:pink;" | 19.0a1
| ''Firefox 19.0 Nightly''
| October 9, 2012
| ''First Firefox 19.0 Nightly build.''
|-

| style="background:pink;" | 19.0a2
| ''Firefox 19.0 Aurora''
| November 20, 2012
| ''First Firefox 19.0 Aurora build.''
|-

| style="background:pink;" | 19.0b1
| ''Firefox 19.0 Beta 1''
| January 8, 2013
| ''First Firefox 19.0 Beta release.''
|-

| style="background:pink;" | 19.0b6
| ''Firefox 19.0 Beta 6''
| January 10, 2013
| ''Sixth Firefox 19.0 Beta release.''<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0beta/releasenotes/ |title=Mozilla Firefox 19.0 Beta 6 Release Notes |publisher=] |date=January 10, 2013 |accessdate=February 20, 2013}}</ref>
|-

| style="background:Salmon;" | 19.0
| ''Firefox 19.0''
| February 19, 2013
| ''Official Firefox 19.0 release.''<ref name="Mozilla Firefox 19.0 Release notes">{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0/releasenotes/ |title=Mozilla Firefox 19.0 Release Notes |publisher=] |date=February 19, 2013 |accessdate=February 19, 2013}}</ref>
* Built-in ] Viewer.
* Canvas elements can export their content as an image blob using <code>canvas.toBlob()</code>.
* Startup performance improvements.
* Debugger now supports pausing on exceptions and hiding non-enumerable properties.
* Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true).
* There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true).
* Web Console CSS links now open in the Style Editor.
* CSS @page is now supported.
* CSS viewport-percentage length units implemented (vh, vw, vmin and vmax).
* CSS text-transform now supports full-width.
* Fixed certain valid WebGL drawing operations that were incorrectly rejected, leaving incomplete rendering in affected pages.
* Fixed an issue that starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode.
* Fixed plugins that stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode.
|-

| style="background:Salmon;" | 19.0.1
| ''Firefox 19.0.1''
| February 27, 2013
| ''Off-cycle stability update.''<ref name="Mozilla Firefox 19.0.1 Release notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0.1/releasenotes/ |title=Mozilla Firefox 19.0.1 Release Notes |publisher=] |date=February 27, 2013 |accessdate=February 28, 2013}}</ref>
* Windows 8 only: Fixed stability issue for some AMD Radeon HD graphics cards.
|-

| style="background:Salmon;" | 19.0.2
| ''Firefox 19.0.2''
| March 7, 2013
| ''Off-cycle security update.''<ref name="Mozilla Firefox 19.0.2 Release notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0.2/releasenotes/ |title=Mozilla Firefox 19.0.2 Release Notes |publisher=] |date=March 7, 2013 |accessdate=March 8, 2013}}</ref>
* Last release for Android 2.1
''on April 2, 2013''.
|}

==== Versions 20 through 29 ====

{{#section:Firefox release history|color table}}

{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-

| style="vertical-align:top;" rowspan="11" | ''']'''
| style="background:Pink;" | 20.0a1
| ''Firefox 20.0 Nightly''
| November 20, 2012
| ''First Firefox 20.0 Nightly build.''
|-

| style="background:Pink;" | 20.0a2
| ''Firefox 20.0 Aurora''
| January 8, 2013
| ''First Firefox 20.0 Aurora build.''<ref name="Wiki Mozilla 20.0a2">{{cite web |url=https://wiki.mozilla.org/RapidRelease/Calendar |title=RapidRelease/Calendar for 20.0a2 |publisher=wiki.mozilla.org| date=January 8, 2013 |accessdate=January 9, 2013}}</ref>
|-

| style="background:Pink;" | 20.0b1
| ''Firefox 20.0 Beta 1''
| February 22, 2013
| ''First Firefox 20.0 Beta release.''<ref name="Mozilla 20.0 Beta 1">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/20.0beta/releasenotes/ |title=Mozilla Firefox 20.0 Beta 1 Release Notes |publisher=] |date=February 22, 2013 |accessdate=February 24, 2013}}</ref>
|-

| style="background:Pink;" | 20.0b2
| ''Firefox 20.0 Beta 2''
| February 27, 2013
| ''Second Firefox 20.0 Beta release.''<ref name="Mozilla 20.0 Beta 2">{{cite web |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/ |title=Mozilla Firefox 20.0 Beta 2 |publisher=Ftp Mozilla |date=February 27, 2013 |accessdate=March 29, 2013}}</ref>
|-

| style="background:Pink;" | 20.0b3
| ''Firefox 20.0 Beta 3''
| March 5, 2013
| ''Third Firefox 20.0 Beta release.''<ref name="Mozilla 20.0 Beta 3">{{cite web |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/ |title=Mozilla Firefox 20.0 Beta 3 |publisher=Ftp Mozilla |date=March 5, 2013 |accessdate=March 29, 2013}}</ref>
|-

| style="background:Pink;" | 20.0b4
| ''Firefox 20.0 Beta 4''
| March 7, 2013
| ''Fourth Firefox 20.0 Beta release.''<ref name="Mozilla 20.0 Beta 4">{{cite web |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/ |title=Mozilla Firefox 20.0 Beta 4 |publisher=Ftp Mozilla | date=March 7, 2013 |accessdate=March 29, 2013}}</ref>
|-

| style="background:Pink;" | 20.0b5
| ''Firefox 20.0 Beta 5''
| March 13, 2013
| ''Fifth Firefox 20.0 Beta release.''<ref name="Mozilla 20.0 Beta 5">{{cite web |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/ |title=Mozilla Firefox 20.0 Beta 5 |publisher=Ftp Mozilla |date=March 13, 2013 |accessdate=March 29, 2013}}</ref>
|-

| style="background:Pink;" | 20.0b6
| ''Firefox 20.0 Beta 6''
| March 20, 2013
| ''Sixth Firefox 20.0 Beta release.''<ref name="Mozilla 20.0 Beta 6">{{cite web |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/ |title=Mozilla Firefox 20.0 Beta 6 |publisher=Ftp Mozilla |date=March 20, 2013 |accessdate=March 29, 2013 }}</ref>
|-

| style="background:Pink;" | 20.0b7
| ''Firefox 20.0 Beta 7''
| March 25, 2013
| ''Seventh Firefox 20.0 Beta release.''<ref name="Mozilla 20.0 Beta 7">{{cite web |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/ |title=Mozilla Firefox 20.0 Beta 7 |publisher=Ftp Mozilla |date=March 25, 2013 |accessdate=March 29, 2013}}</ref>
|-

| style="background:Salmon;" | 20.0
| ''Firefox 20.0''
| April 2, 2013
| ''Official Firefox 20.0 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/20.0/releasenotes/ |title=Mozilla Firefox 20.0 Release Notes |publisher=Mozilla.org |date=April 2, 2013 |accessdate=April 2, 2013}}</ref>
* Per-window Private Browsing.
* New download experience.
* Ability to close hanging plugins, without the browser hanging.
* Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.).
* Continued implementation of draft ] 6 – <code>clear()</code> and <code>Math.imul</code>.
* New ] Profiler tool.
* getUserMedia implemented for web access to the user's camera and microphone (with user permission).
* <code><canvas></code> now supports blend modes.
* Various <code><audio></code> and <code><video></code> improvements.
* Fixed: Details button on Crash Reporter.
* Fixed: Unity plugin that doesn't display in HiDPI mode.
|-

| style="background:Salmon;" | 20.0.1
| ''Firefox 20.0.1''
| April 11, 2013
| ''Off-cycle security update.''<ref name="Mozilla 20.0.1 Release Notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/20.0.1/releasenotes/ |title=Mozilla Firefox 20.0.1 Release Notes |publisher=] |date=April 11, 2013 |accessdate=April 12, 2013}}</ref>
* Windows-only update to handle issues around handling UNC paths.
''on May 14, 2013''
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink;" | 21.0a1
| ''Firefox 21.0 Nightly''
| January 8, 2013
| ''First Firefox 21.0 Nightly build.''
|-

| style="background:Pink;" | 21.0a2
| ''Firefox 21.0 Aurora''
| February 22, 2013
| ''First Firefox 21.0 Aurora build.''<ref name="Mozilla 21.0 Aurora 2">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/21.0a2/auroranotes/ |title=Mozilla Firefox 21.0 Aurora 2 Release Notes |publisher=] | date=February 22, 2013 |accessdate=February 24, 2013}}</ref>
|-

| style="background:Pink;" | 21.0b1
| ''Firefox 21.0 Beta 1''
| April 2, 2013
| ''First Firefox 21.0 Beta release.''
|-

| style="background:Pink;" | 21.0b2
| ''Firefox 21.0 Beta 2''
| April 4, 2013
| ''Second Firefox 21.0 Beta release.''<ref name="Mozilla 21.0 Beta 2 Release Notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/21.0beta/releasenotes/ |title=Mozilla 21.0 Beta 2 Release Notes |publisher=] |date=April 4, 2013 |accessdate=April 12, 2013}}</ref>
|-

| style="background:Pink;" | 21.0b3
| ''Firefox 21.0 Beta 3''
| April 17, 2013
| ''Third Firefox 21.0 Beta release.''<ref name="Mozilla 21.0 Beta 3 Release Notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/21.0beta/releasenotes/ |title=Mozilla 21.0 Beta 3 Release Notes |publisher=] |date=April 4, 2013 |accessdate=April 22, 2013}}</ref>
|-

| style="background:Salmon;" | 21.0
| ''Firefox 21.0''
| May 14, 2013
| ''Official Firefox 21.0 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/21.0/releasenotes/ |title=Mozilla Firefox 21.0 Release Notes |publisher =Mozilla.org |date=May 14, 2013 |accessdate=May 14, 2013}}</ref>
* The Social API now supports multiple providers.
* Enhanced three-state UI for Do Not Track (DNT).
* Preliminary implementation of Firefox Health Report.
* Firefox will suggest how to improve your application startup time if needed.
* Ability to Restore removed thumbnails on New tab Page.
* CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none.
* Graphics related performance improvements.
* Removed E4X support from SpiderMonkey.
* Implemented Remote Profiling.
* Integrated, Add-on SDK loader and API libraries into Firefox.
* Added support for <code><main></code> element.
* Implemented scoped stylesheets.
* Fixed: Some function keys may not work when pressed.
* Fixed: Browsing and Download history clearing needs unification to avoid confusion on clearing download history.
''on June 25, 2013''.
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Pink;" | 22.0a1
| ''Firefox 22.0 Nightly''
| February 23, 2013
| ''First Firefox 22.0 Nightly build.''<ref name="Mozilla 22.0 Aurora 1">{{cite web |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/ |title=Mozilla Firefox 22.0 Aurora 1 Release Notes |publisher=] | date=February 23, 2013 |accessdate=February 24, 2013}}</ref>
|-

| style="background:Pink" | 22.0a2
| ''Firefox 22.0 Aurora''
| April 2, 2013
| ''First Firefox 22.0 Aurora build.''
|-

| style="background:Pink" | 22.0b1
| ''Firefox 22.0 Beta 1''
| May 16, 2013
| ''First Firefox 22.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/22.0beta/releasenotes/ |title=Mozilla Firefox 22.0 Beta Release Notes |publisher=Mozilla |date=2013-05-16 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/22.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:Salmon" | 22.0
| ''Firefox 22.0''
| June 25, 2013
| ''Official Firefox 22.0 release.''<ref name="MZA FFX 22.0 Release Notes">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/22.0/releasenotes/ |title=Mozilla Firefox 22.0 Release Notes |publisher=] |date=June 25, 2013 |accessdate=June 27, 2013}}</ref>
* WebRTC is now enabled by default.
* Windows: Firefox now follows display scaling options to render text larger on high-res displays.
* Mac OS X: Download progress in Dock application icon.
* HTML5 audio/video playback rate can now be changed.
* Social services management implemented in Add-ons Manager.
* asm.js optimizations (OdinMonkey) enabled for major performance improvements.
* Improved WebGL rendering performance through asynchronous canvas updates.
* Plain text files displayed within Firefox will now word-wrap.
* For user security, the |Components| object is no longer accessible from web content.
* Improved memory usage and display time when rendering images.
* Pointer Lock API can now be used outside of fullscreen.
* CSS3 Flexbox implemented and enabled by default.
* New Web Notifications API implemented.
* Added clipboardData API for JavaScript access to a user's clipboard.
* New built-in font inspector.
* New HTML5 <code><nowiki><data></nowiki></code> and <code><nowiki><time></nowiki></code> elements
* Fixed: Scrolling using some high-resolution-scroll aware touchpads feels slow.
''on August 6, 2013''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 23.0a1
| ''Firefox 23.0 Nightly''
| April 2, 2013
| ''First Firefox 23.0 Nightly build.''
|-

| style="background:Pink" | 23.0a2
| ''Firefox 23.0 Aurora''
| May 14, 2013
| ''First Firefox 23.0 Aurora build.''
|-

| style="background:Pink" | 23.0b1
| ''Firefox 23.0 Beta 1''
| June 27, 2013
| ''First Firefox 23.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/23.0beta/releasenotes/ |title=Mozilla Firefox 23.0 Beta Release Notes |publisher=Mozilla |date=2013-06-27 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/23.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:Salmon" | 23.0
| ''Firefox 23.0''
| August 6, 2013
| ''Official Firefox 23.0 release.''<ref name="Mozilla Firefox 23.0 Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/23.0/releasenotes/ |title=Mozilla Firefox 23.0 Release Notes |publisher=] |date=August 6, 2013 |accessdate=August 7, 2013}}</ref>
In this Version Mozilla changed the Firefox Logo.
* Mixed content blocking enabled to protects users from man-in-the-middle attacks and eavesdroppers on HTTPS pages.
* Options panel created for Web Developer Toolbox.
* "Enable JavaScript" preference checkbox has been removed and user-set values will be reset to the default.
* Improved about:memory's functional UI.
* Simplified interface for notifications of plugin installation.
* Enabled DXVA2 on Windows Vista+ to accelerate H.264 video decoding.
* Users can now switch to a new search provider across the entire browser.
* CSP policies using the standard syntax and semantics will now be enforced.
* <code><input type='file'></code> rendering improvements.
* Replaced fixed-ratio audio resampler in webrtc.org capture code with Speex resampler and eliminated pseudo-44,000&nbsp;Hz rate.
* "Load images automatically" and "Always show the tab bar" checkboxes removed from preferences and reset to defaults.
* HTML5 <code><input type="range"></code> form control implemented.
* Write more accessible pages on touch interfaces with new ARIA role for key buttons.
* Social share functionality.
* Added unprefixed requestAnimationFrame.
* Implemented a global browser console.
* Dropped blink effect from text-decoration: blink; and completely removed <code><blink></code> element.
* New feature in toolbox: Network Monitor.
|-

| style="background:Salmon" | 23.0.1
| ''Firefox 23.0.1''
| August 16, 2013
| ''Off-cycle stability update.''<ref name="Mozilla Firefox 23.0.1 Release notes 11">{{cite web |url=https://www.mozilla.org/en-US/firefox/23.0.1/releasenotes/ |title=Mozilla Firefox 23.0.1 Release Notes |publisher=] |date=August 16, 2013 |accessdate=August 17, 2013}}</ref>
* Fixed rendering glitches on H.264 video only in FF23 on Vista.
* Fixed spellchecking that was broken with non-ASCII characters in profile path.
* Fixed audio static/"burble"/breakup in Firefox to Firefox WebRTC calls.
''on September 17, 2013''.
|-

| style="vertical-align:top;" rowspan="15" | ''']'''
| style="background:Pink" | 24.0a1
| ''Firefox 24.0 Nightly''
| May 14, 2013
| ''First Firefox 24.0 Nightly build.''
|-

| style="background:Pink" | 24.0a2
| ''Firefox 24.0 Aurora''
| June 25, 2013
| ''First Firefox 24.0 Aurora build.''
|-

| style="background:Pink" | 24.0b1
| ''Firefox 24.0 Beta 1''
| August 8, 2013
| ''First Firefox 24.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/24.0beta/releasenotes/ |title=Mozilla Firefox 24.0 Beta Release Notes |publisher=Mozilla |date=2013-08-08 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/24.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:Salmon" | 24.0
| ''Firefox 24.0''
| September 17, 2013
|'' Official Firefox 24.0 release.''<ref name="Mozilla Firefox 24.0 Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.0/releasenotes/ |title=Mozilla Firefox 24.0 Release Notes |publisher=] |date=September 17, 2013 |accessdate=September 16, 2013}}</ref>
* Support for new scrollbar style in Mac&nbsp;OS&nbsp;X 10.7 and newer.
* Implemented Close tabs to the right.
* Social: Ability to tear-off chat windows to view separately by simply dragging them out.
* Accessibility related improvements on using pinned tabs.
* Removed support for Revocation Lists feature.
* Performance improvements on New Tab Page loads.
* Major SVG rendering improvements around Image tiling and scaling.
* Improved and unified Browser console for enhanced debugging experience, replacing existing Error console.
* Removed support for sherlock files that are loaded from application or profile directory.
* Replaced fixed-ratio audio resampler in webrtc.org capture code with Speex resampler and eliminated pseudo-44,000&nbsp; rate.
''on October 29, 2013''.
|-

| style="background:Salmon" | 24.0esr
| ''Firefox 24.0esr''
| September 17, 2013
| ''Official Firefox 24.0 Extended Support Release (ESR).''<ref name="Mozilla Firefox ESR">{{cite web |url=https://www.mozilla.org/en-US/firefox/organizations/all/ |title=Download Firefox Extended Support Release in your language |publisher=] |date=September 17, 2013 |accessdate=October 9, 2013}}</ref>
|-

| style="background:Salmon;" | 24.1.0esr
| ''Firefox 24.1.0esr''
| October 29, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 24.1.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.1.0/releasenotes/ |title=Mozilla Firefox 24.1.0 Release Notes |publisher=] |date=October 29, 2013 |accessdate=October 30, 2013 }}</ref>
|-

| style="background:Salmon;" | 24.1.1esr
| ''Firefox 24.1.1esr''
| November 15, 2013
| ''Off-cycle stability update.''<ref name="Mozilla Firefox 24.1.1 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.1.1/releasenotes/ |title=Mozilla Firefox 24.1.1 Release Notes |publisher=] |date=November 15, 2013 |accessdate=November 18, 2013}}</ref>
* Updated branches that use 4.10 RTM to 4.10.2 RTM.
* Updated Mozilla to NSS 3.15.3 (new alternative NSS branch) to pick up a few fixes.
* Fixed an issue where some UI strings in Firefox 24.1.0 ESR l10n builds are in English.
|-

| style="background:Salmon;" | 24.2.0esr
| ''Firefox 24.2.0esr''
| December 10, 2013
| ''Regular security update.''<ref name="Mozilla Firefox 24.2.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.2.0/releasenotes/ |title=Mozilla Firefox 24.2.0 Release Notes |publisher=] |date=December 10, 2013 |accessdate=December 11, 2013}}</ref>
|-

| style="background:Salmon;" | 24.3.0esr
| ''Firefox 24.3.0esr''
| February 4, 2014
| ''Regular security update.''<ref name="Mozilla Firefox 24.3.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.3.0/releasenotes/ |title=Mozilla Firefox 24.3.0 Release Notes |publisher=] |date=February 4, 2014 |accessdate=February 4, 2014}}</ref>
|-

| style="background:Salmon;" | 24.4.0esr
| ''Firefox 24.4.0esr''
| March 18, 2014
| ''Regular security update.''<ref name="Mozilla Firefox 24.4.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.4.0/releasenotes/ |title=Mozilla Firefox 24.4.0 Release Notes |publisher=] |date=March 18, 2014 |accessdate=March 18, 2014}}</ref>
|-

| style="background:Salmon;" | 24.5.0esr
| ''Firefox 24.5.0esr''
| April 29, 2014
| ''Regular security update.''<ref name="Mozilla Firefox 24.5.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.5.0/releasenotes/ |title=Mozilla Firefox 24.5.0 Release Notes |publisher=] |date=April 29, 2014 |accessdate=April 29, 2014}}</ref>
|-

| style="background:Salmon;" | 24.6.0esr
| ''Firefox 24.6.0esr''
| June 10, 2014
| ''Regular security update.''<ref name="Mozilla Firefox 24.6.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.6.0/releasenotes/ |title=Mozilla Firefox 24.6.0 Release Notes |publisher=] |date=June 10, 2014 |accessdate=June 10, 2014}}</ref>
|-

| style="background:Salmon;" | 24.7.0esr
| ''Firefox 24.7.0esr''
| July 22, 2014
| ''Regular security update.''<ref name="Mozilla Firefox 24.7.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.7.0/releasenotes/ |title=Mozilla Firefox 24.7.0 Release Notes |publisher=] |date=July 22, 2014 |accessdate=July 22, 2014}}</ref>
|-

| style="background:Salmon;" | 24.8.0esr
| ''Firefox 24.8.0esr''
| September 2, 2014
| ''Regular security update.''<ref name="Mozilla Firefox 24.8.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.8.0/releasenotes/ |title=Mozilla Firefox 24.8.0 Release Notes |publisher=] |date=September 2, 2014 |accessdate=September 2, 2014}}</ref>
|-

| style="background:Salmon;" | 24.8.1esr
| ''Firefox 24.8.1esr''
| September 24, 2014
| ''Off-cycle security update.''<ref name="Mozilla Firefox 24.8.1ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/24.8.1/releasenotes/ |title=Mozilla Firefox 24.8.1 Release Notes |publisher=] |date=September 24, 2014 |accessdate=September 25, 2014}}</ref> ''on October 14, 2014''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 25.0a1
| ''Firefox 25.0 Nightly''
| June 25, 2013
| ''First Firefox 25.0 Nightly build.''
|-

| style="background:Pink" | 25.0a2
| ''Firefox 25.0 Aurora''
| August 6, 2013
| ''First Firefox 25.0 Aurora build.''
|-

| style="background:Pink" | 25.0b1
| ''Firefox 25.0 Beta 1''
| September 19, 2013
| ''First Firefox 25.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/25.0beta/releasenotes/ |title=Mozilla Firefox 25.0 Beta Release Notes |publisher=Mozilla |date=2013-09-19 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/25.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:Salmon" | 25.0
| ''Firefox 25.0''
| October 29, 2013
| ''Official Firefox 25.0 release.''<ref name="Mozilla Firefox 25.0">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/25.0/releasenotes/ |title=Mozilla Firefox 25.0 Release Notes |publisher=] |date=October 29, 2013 |accessdate=October 30, 2013}}</ref>
* Web Audio support.
* The find bar is no longer shared between tabs.
* If away from Firefox for months, you now will be offered the option to migrate another browser's history and settings.
* Resetting Firefox no longer clears your browsing session.
* CSS3 background-attachment:local support to control background scrolling.
* Many new ] functions implemented.
* <code>iframe</code> document content can now be specified inline.
* Fixed blank or missing page thumbnails when opening a new tab.
|-

| style="background:Salmon" | 25.0.1
| ''Firefox 25.0.1''
| November 15, 2013
| ''Off-cycle security and stability update.''<ref name="Mozilla Firefox 25.0.1">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/25.0.1/releasenotes/ |title=Mozilla Firefox 25.0.1 Release Notes |publisher=] |date=November 15, 2013 |accessdate=November 16, 2013}}</ref>
* Fixed pages that sometimes wouldn't load without first moving the cursor.
''on December 10, 2013''
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 26.0a1
| ''Firefox 26.0 Nightly''
| August 6, 2013
| ''First Firefox 26.0 Nightly build.''
|-

| style="background:Pink" | 26.0a2
| ''Firefox 26.0 Aurora''
| September 17, 2013
| ''First Firefox 26.0 Aurora build.''
|-

| style="background:Pink" | 26.0b1
| ''Firefox 26.0 Beta 1''
| October 31, 2013
| ''First Firefox 26.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/26.0beta/releasenotes/ |title=Mozilla Firefox 26.0 Beta Release Notes |publisher=Mozilla |date=2013-10-31 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/26.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:Salmon" | 26.0
| ''Firefox 26.0''
| December 10, 2013
| ''Official Firefox 26.0 release.''<ref>{{cite web |title=Mozilla Firefox 26.0. Release Notes |publisher=Mozilla.org |date=December 10, 2013 |url=https://www.mozilla.org/en-US/firefox/26.0/releasenotes/ |accessdate=December 10, 2013}}</ref>
* All Java plug-ins are defaulted to 'click to play'.
* Password manager now supports script-generated password fields.
* Updates can now be performed by Windows users without write permissions to Firefox install directory (requires Mozilla Maintenance Service).
* Support for H.264 on Linux if the appropriate gstreamer plug-ins are installed.
* Support for MP3 decoding on Windows XP, completing MP3 support across Windows OS versions.
* CSP implementation now supports multiple policies, including the case of both an enforced and Report-Only policy, per the specification.
* Social API now supports Social Bookmarking for multiple providers through its SocialMarks functionality.
* Math.ToFloat32 takes a JavaScript value and converts it to a Float32, whenever possible.
* There is no longer a prompt when websites use appcache.
* Support for the CSS image orientation property.
* New App Manager allows you to deploy and debug HTML5 webapps on Firefox OS phones and the Firefox OS Simulator.
* IndexedDB can now be used as a "optimistic" storage area so it doesn't require any prompts and data is stored in a pool with LRU eviction policy, in short temporary storage.
* Fixed: When displaying a standalone image, Firefox matches the Exif orientation information contained within the JPEG image.
* Fixed: Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1.
* Improved page load times due to no longer decoding images that are not visible.
* Fixed: AudioToolbox MP3 backend for Mac OS X.
|-

| style="background:Salmon" | 26.0.1
| ''Firefox 26.0.1''
| December 20, 2013
| ''Off-cycle stability mobile release.''<ref>{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/mobile/26.0.1/releasenotes/ |title=Firefox Notes – Mobile |publisher=mozilla.org |date=December 20, 2013 |accessdate=February 4, 2014}}</ref>
* Fixed the screen that distorts on some devices after tapping on search suggestion.
* Fixed: About:home is missing translations in some locales. Most affected are: ca, ga-IE, hu, ko, pt-BR, pt-PT, ro, and uk.
* Fixed: In some cases, the clip set on the page doesn't update when the addressbar hides.
* Fixed: Invalid position:fixed rendering.
''on February 4, 2014''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 27.0a1
| ''Firefox 27.0 Nightly''
| September 17, 2013
| ''First Firefox 27.0 Nightly build.''
|-

| style="background:Pink" | 27.0a2
| ''Firefox 27.0 Aurora''
| October 29, 2013
| ''First Firefox 27.0 Aurora build.''
|-

| style="background:Pink" | 27.0b1
| ''Firefox 27.0 Beta 1''
| December 12, 2013
| ''First Firefox 27.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/27.0beta/releasenotes/ |title=Mozilla Firefox 27.0 Beta Release Notes |publisher=Mozilla |date=2013-12-12 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/27.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:Salmon" | 27.0
| ''Firefox 27.0''
| February 4, 2014
| ''Official Firefox 27.0 release.''
* You can now run more than one service at a time with Firefox SocialAPI, allowing you to receive notifications, chat and more from multiple integrated services.
* Enabled TLS 1.1 (RFC 4346) and TLS 1.2 (RFC 5246) by default.
* Added support for SPDY 3.1 protocol.
* Ability to reset style sheets using <code>all:unset</code>.
* You can now choose to deobfuscate javascript in the debugger.
* Added support for scrolled fieldsets.
* Implemented allow-popups directive for iframe sandbox, enabling increased security.
* CSS cursor keywords -moz-grab and -moz-grabbing have been unprefixed.
* Added support for ES6 generators in SpiderMonkey.
* Implemented support for mathematical function <code>Math.hypot()</code> in ES6.
* Dashed line support on Canvas.
* Had Azure/Skia content rendering working on Linux.
|-

| style="background:Salmon" | 27.0.1
| ''Firefox 27.0.1''
| February 13, 2014
| ''Off-cycle stability release.''<ref name="Mozilla F 27.0.1 R N">{{cite web |url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/27.0.1/releasenotes/ |title=Mozilla Firefox 27.0.1 Release Notes |publisher=] |date=February 13, 2014 |accessdate=February 14, 2014}}</ref>
* Fixed stability issues with Greasemonkey and other JavaScript that used ClearTimeoutOrInterval.
* Fixed: JavaScript math correctness issue.
''on March 18, 2014''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 28.0a1
| ''Firefox 28.0 Nightly''
| October 29, 2013
| ''First Firefox 28.0 Nightly build.''
|-

| style="background:Pink" | 28.0a2
| ''Firefox 28.0 Aurora''
| December 10, 2013
| ''First Firefox 28.0 Aurora build.''
|-

| style="background:Pink" | 28.0b1
| ''Firefox 28.0 Beta 1''
| February 6, 2014
| ''First Firefox 28.0 Beta release.''<ref>{{cite web|url=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/28.0beta/releasenotes/ |title=Mozilla Firefox 28.0 Beta Release Notes |publisher=Mozilla |date=2014-02-06 |accessdate=2017-06-13 |archiveurl=https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/28.0beta/releasenotes/ |archivedate=2014-08-13}}</ref>
|-

| style="background:Salmon" | 28.0
| ''Firefox 28.0''
| March 18, 2014
| ''Official Firefox 28.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox28"/>-->
* VP9 video decoding implemented.
* Mac OS X: Notification Center support for web notifications.
* Volume control for HTML5 audio/video.
* Support for Opus in WebM.
* Now that SPDY/3 is implemented support for SPDY/2 has been removed and servers without SPDY/3 will negotiate to HTTP/1 without any penalty.
* Support for MathML 2.0 'mathvariant' attribute.
* Background thread hang reporting.
* Support for multi-line flexbox in layout.
|-

| style="background:Salmon" | 28.0.1
| ''Firefox 28.0.1''
| March 24, 2014
| '''Android'''
''Off-cycle stability mobile update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/28.0.1/releasenotes/ |title=Firefox Notes – Mobile |publisher=mozilla.org |date=March 24, 2014 |accessdate=April 29, 2014}}</ref>
* Fixed: No H.264 video playback on several Galaxy devices.
* Fixed: Mobile-only security fix for <code>file:paths</code>.
''on April 29, 2014''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 29.0a1
| ''Firefox 29.0 Nightly''
| December 10, 2013
| ''First Firefox 29.0 Nightly build.''
|-

| style="background:Pink" | 29.0a2
| ''Firefox 29.0 Aurora''
| February 4, 2014
| ''First Firefox 29.0 Aurora build.''
|-

| style="background:Pink" | 29.0b1
| ''Firefox 29.0 Beta 1''
| March 20, 2014
| ''First Firefox 29.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/29.0beta/releasenotes/ |title=Firefox — Beta Notes (29.0beta) — Mozilla |publisher=Mozilla |date=2014-03-20 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 29.0
| ''Firefox 29.0''
| April 29, 2014
| ''Official Firefox 29.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 29"/>-->
* Significant new customization mode.
* A new menu sits in the right hand corner of Firefox and includes popular browser controls.
* New tabs provide an overall smoother look and fade into the background when not active.
* An interactive onboarding tour to guide users through the new Firefox changes.
* Added the ability to set up Firefox Sync by creating a Firefox account.
* Gamepad API finalized and enabled.
* Malay locale added.
* Clicking on a W3C Web Notification will switch to the originating tab.
* 'box-sizing' (dropping the -moz- prefix) implemented.
* Console object available in web workers.
* Promises enabled by default.
* SharedWorker enabled by default.
* <code><input type="number"></code> implemented and enabled.
* <code><input type="color"></code> implemented and enabled.
* Enabled ECMAScript Internationalization API.
* Add-on bar has been removed, content moved to navigation bar.
* No longer possible to move tabs from the top of the browser without an add-on.
|-

| style="background:Salmon" | 29.0.1
| ''Firefox 29.0.1''
| May 9, 2014
| ''Off-cycle stability update.''<ref name="Mozilla Firefox 29.0.1 Release Notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/29.0.1/releasenotes/ |title=Mozilla Firefox 29.0.1 Release Notes |publisher=] |date=May 9, 2014 |accessdate=May 10, 2014}}</ref>
* Fixed: An issue with pdf.js printing white pages.
* Fixed: Tabs not visible with dark themes under Windows 8.1.
* Fixed: Session Restore failed with a corrupted <code>sessionstore.js</code> file.
* Fixed: Seer disabled by default.
''on June 10, 2014''.
|}

==== Versions 30 through 39 ====

{{#section:Firefox release history|color table}}

{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Pink" | 30.0a1
| ''Firefox 30.0 Nightly''
| February 4, 2014
| ''First Firefox 30.0 Nightly build.''
|-

| style="background:Pink" | 30.0a2
| ''Firefox 30.0 Aurora''
| March 18, 2014
| ''First Firefox 30.0 Aurora build.''
|-

| style="background:Pink" | 30.0b1
| ''Firefox 30.0 Beta 1''
| May 1, 2014
| ''First Firefox 30.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/30.0beta/releasenotes/ |title=Firefox — Beta Notes (30.0beta) — Mozilla |publisher=Mozilla |date=2014-05-01 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 30.0
| ''Firefox 30.0''
| June 10, 2014
| ''Official Firefox 30.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 30"/>-->
* Sidebars button in browser chrome enables faster access to social, bookmark, & history sidebars.
* Mac OS X command-E sets find term to selected text.
* Support for ] 1.0.
* Disallowed calling WebIDL constructors as functions on the web.
* With the exception of those bundled inside an extension or ones that are whitelisted, plugins will no longer be activated by default.
* Fixes to box-shadow and other visual overflow.
* Mute and volume available per window when using WebAudio.
* Background-blend-mode enabled by default.
* Use of line-height allowed for <code><input type="reset|button|submit"></code>.
* ES6 array and generator comprehensions implemented.
* Error stack now contains column number.
* Support for alpha option in canvas context options.
* Fixed: Ignored autocomplete="off" when offering to save passwords via the password manager.
* Fixed TypedArrays that don't support new named properties.
''on July 22, 2014''.
|-

| style="vertical-align:top;" rowspan="16" | ''']'''
| style="background:Pink" | 31.0a1
| ''Firefox 31.0 Nightly''
| March 18, 2014
| ''First Firefox 31.0 Nightly build.''
|-

| style="background:Pink" | 31.0a2
| ''Firefox 31.0 Aurora''
| April 29, 2014
| ''First Firefox 31.0 Aurora build.''
|-

| style="background:Pink" | 31.0b1
| ''Firefox 31.0 Beta 1''
| June 12, 2014
| ''First Firefox 31.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/31.0beta/releasenotes/ |title=Firefox — Beta Notes (31.0beta) — Mozilla |publisher=Mozilla |date=2014-06-12 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 31.0
| ''Firefox 31.0''
| July 22, 2014
| ''Official Firefox 31.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 31"/>-->
* Adds the search field to the new tab page.
* <code>mozilla::pkix</code> as default certificate verifier.
* Blocks malware from downloaded files.
* Partial implementation of the OpenType MATH table.
* Support of Prefer:Safe http header for parental control.
* audio/video .ogg and .pdf files handled by Firefox if no application specified (Windows only).
* Upper Sorbian locale added.
* Removal of the CAPS infrastructure for specifying site-specific permissions (via <code>capability.policy.*</code> preferences). Most notably, attempts to use this functionality to grant access to the clipboard will no longer work. The sole exception is the checkloaduri permission, which may still be used as before to allow sites to load <code>file://</code> URIs.
* WebVTT implemented and enabled.
* CSS3 variables implemented.
* Developer Tools: Add-on Debugger.
* Developer Tools: Canvas Debugger.
* New Array built-in: <code>Array.prototype.fill()</code>.
* New Object built-in: <code>Object.setPrototypeOf()</code>.
* CSP 1.1 nonce-source and hash-source enabled by default.
* Developer Tools: Eyedropper tool added to the color picker.
* Developer Tools: Editable Box Model.
* Developer Tools: Code Editor improvements.
* Developer Tools: Console stack traces.
* Developer Tools: Copy as cURL.
* Developer Tools: Styled console logs.
* navigator.sendBeacon enabled by default.
* Dialogs spawned from the onbeforeunload event no longer block access to the rest of the browser.
* Fixed: Search for partially selected link text from context menu.
* Last release for ARMv7 Android 2.2
''on September 2, 2014''.
|-

| style="background:Salmon" | 31.0esr
| ''Firefox 31.0esr''
| July 22, 2014
| ''Official Firefox 31.0 Extended Support Release (ESR).''<ref name="Mozilla Firefox ESR" />
|-

| style="background:Salmon;" | 31.1.0esr
| ''Firefox 31.1.0esr''
| September 2, 2014
| ''Regular security update.''<ref name="Mozilla Firefox 31.1.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/31.1.0/releasenotes/ |title=Mozilla Firefox 31.1.0 Release Notes |publisher=] |date=September 2, 2014 |accessdate=September 2, 2014}}</ref>
|-

| style="background:Salmon;" | 31.1.1esr
| ''Firefox 31.1.1esr''
| September 24, 2014
| ''Off-cycle security update.''<ref name="Mozilla Firefox 31.1.1 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/31.1.1/releasenotes/ |title=Mozilla Firefox 31.1.1 Release Notes |publisher=] |date=September 24, 2014 |accessdate=September 25, 2014}}</ref>
|-

| style="background:Salmon;" | 31.2.0esr
| ''Firefox 31.2.0esr''
| October 14, 2014
| ''Regular security and stability update.''<ref name="Mozilla Firefox 31.2.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/31.2.0/releasenotes/ |title=Mozilla Firefox 31.2.0 Release Notes |publisher=] |date=October 14, 2014 |accessdate=October 14, 2014}}</ref>
* Fixed: Invalid certificate issue with <code>mozilla::pkix</code>.
* Fixed: Importing an RSA private key fails if p < q.
|-

| style="background:Salmon;" | 31.3.0esr
| ''Firefox 31.3.0esr''
| December 1, 2014
| ''Regular security and stability update.''<ref name="Mozilla Firefox 31.3.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/31.3.0/releasenotes/ |title=Mozilla Firefox 31.3.0 Release Notes |publisher=] |date=December 1, 2014 |accessdate=December 2, 2014}}</ref>
* Fixed: <code>@ JS::Handle::operator JSObject* const&()</code> startup crash.
* Fixed: Intermittent failures in add-ons manager mochitest-browser tests.
* Fixed: Bad CPU type in executable running mochitests on Mac OS X Yosemite.
* Fixed: Error building <code>nsChildView.mm</code> on Mac OS X Yosemite.
* Fixed: Build error on Mac OS X Yosemite.
* Fixed: Wrong CPU features detection on some x86 CPUs.
* Fixed: <code>XMLHttpRequest.send({})</code> should not throw.
* Last release for ARMv6 Android
|-

| style="background:Salmon;" | 31.4.0esr
| ''Firefox 31.4.0esr''
| January 13, 2015
| ''Regular security update.''<ref name="Mozilla Firefox 31.4.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/31.3.0/releasenotes/ |title=Mozilla Firefox 31.4.0 Release Notes |publisher=] |date=January 13, 2015 |accessdate=January 14, 2015}}</ref>
|-

| style="background:Salmon;" | 31.5.0esr
| ''Firefox 31.5.0esr''
| February 24, 2015
| ''Regular security update.''<ref name="Mozilla Firefox 31.5.0 ESR Release notes">{{cite web |url=https://www.mozilla.org/en-US/firefox/31.5.0/releasenotes/ |title=Mozilla Firefox 31.5.0 Release Notes |publisher=] |date=February 24, 2015 |accessdate=February 24, 2015}}</ref>
|-

| style="background:Salmon;" | 31.5.2esr
| ''Firefox 31.5.2esr''
| March 20, 2015
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/31.5.2/releasenotes/ |title=Firefox — Notes (31.5.2) — Mozilla |publisher=mozilla.org |date=March 20, 2015 |accessdate=March 21, 2015}}</ref>
|-

| style="background:Salmon;" | 31.5.3esr
| ''Firefox 31.5.3esr''
| March 21, 2015
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/31.5.3/releasenotes/ |title=Firefox — Notes (31.5.3) — Mozilla |publisher=mozilla.org |date=March 21, 2015 |accessdate=March 22, 2015}}</ref>
|-

| style="background:Salmon" | 31.6.0esr
| ''Firefox 31.6.0esr''
| March 31, 2015
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/31.6.0/releasenotes/ |title=Firefox — Notes (31.6.0) — Mozilla |publisher=mozilla.org |date=March 31, 2015 |accessdate=March 31, 2015}}</ref>
|-

| style="background:Salmon;" | 31.7.0esr
| ''Firefox 31.7.0esr''
| May 12, 2015
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/31.7.0/releasenotes/ |title=Firefox — Notes (31.7.0) — Mozilla |publisher=mozilla.org |date=May 12, 2015 |accessdate=May 12, 2015}}</ref>
|-

| style="background:Salmon;" | 31.8.0esr
| ''Firefox 31.8.0esr''
| July 2, 2015
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/31.8.0/releasenotes/ |title=Firefox — Notes (31.8.0) — Mozilla |publisher=mozilla.org |date=July 2, 2015 |accessdate=July 3, 2015}}</ref> ''on August 11, 2015''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:Pink" | 32.0a1
| ''Firefox 32.0 Nightly''
| April 29, 2014
| ''First Firefox 32.0 Nightly build.''
|-

| style="background:Pink" | 32.0a2
| ''Firefox 32.0 Aurora''
| June 10, 2014
| ''First Firefox 32.0 Aurora build.''
|-

| style="background:Pink" | 32.0b1
| ''Firefox 32.0 Beta 1''
| July 24, 2014
| ''First Firefox 32.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/32.0beta/releasenotes/ |title=Firefox — Beta Notes (32.0beta) — Mozilla |publisher=Mozilla |date=2014-07-24 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 32.0
| ''Firefox 32.0''
| September 2, 2014
| ''Official Firefox 32.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 32"/>-->
* New HTTP cache provides improved performance including crash recovery.
* Integration of generational garbage collection.
* Public key pinning support enabled.
* Displays the number of found items in the find toolbar.
* Easier back, forward, reload, and bookmarking through the context menu.
* Views historical use information for logins stored in password manager.
* Lower Sorbian locale added.
* Removed and turned off trust bit for some 1024-bit root certificates.
* Performance improvements to Password Manager and Add-on Manager.
* drawFocusIfNeeded enabled by default.
* CSS position:sticky enabled by default.
* mix-blend-mode enabled by default.
* Vibration API updated to latest W3C spec.
* box-decoration-break enabled by default.
* ECMAScript 6 built-in method Array#copyWithin implemented.
* New Array built-in: <code>Array.from()</code>
* navigator.languages property and languagechange event implemented.
* CSS box-decoration-break replaces -moz-background-inline-policy.
* HiDPI support in Developer Tools UI.
* Inspector button moved to the top left.
* Hidden nodes displayed differently in the markup-view.
* New Web Audio Editor.
* Code completion and inline documentation added to Scratchpad.
* Fixed: Mac OS X: cmd-L does not open a new window when no window is available.
* Fixed Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1.
|-

| style="background:Salmon" | 32.0.1
| ''Firefox 32.0.1''
| September 9, 2014 (Android)<br />September 12, 2014 (desktop)
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/32.0.1/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=September 12, 2014 |accessdate=September 14, 2014}}</ref>
;Desktop
* Fixed stability issues for computers with multiple graphics cards.
* Fixed mixed content icon that may be incorrectly displayed instead of lock icon for SSL sites.
* Fixed: WebRTC: setRemoteDescription() silently fails if no success callback is specified.
;Android
* Fixed link tap selection that was offset on some Android devices.
|-

| style="background:Salmon" | 32.0.2
| ''Firefox 32.0.2''
| September 18, 2014
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/32.0.2/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=September 18, 2014 |accessdate=September 19, 2014}}</ref>
* Fixed corrupt installations causing Firefox to crash on update.
|-

| style="background:Salmon" | 32.0.3
| ''Firefox 32.0.3''
| September 24, 2014
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/32.0.3/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=September 24, 2014 |accessdate=September 25, 2014}}</ref> ''on October 14, 2014''.
|-

| style="vertical-align:top;" rowspan="9" | ''']'''
| style="background:Pink" | 33.0a1
| ''Firefox 33.0 Nightly''
| June 10, 2014
| ''First Firefox 33.0 Nightly build.''
|-

| style="background:Pink" | 33.0a2
| ''Firefox 33.0 Aurora''
| July 22, 2014
| ''First Firefox 33.0 Aurora build.''
|-

| style="background:Pink" | 33.0b1
| ''Firefox 33.0 Beta 1''
| September 2, 2014
| ''First Firefox 33.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/33.0beta/releasenotes/ |title=Firefox — Beta Notes (33.0beta) — Mozilla |publisher=Mozilla |date=2014-09-02 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 33.0
| ''Firefox 33.0''
| October 14, 2014
| ''Official Firefox 33.0 release.''<ref name="Firefox 33.0">{{cite web |title=Mozilla Firefox 33.0 Release Notes |publisher=Mozilla.org |date=October 14, 2014 |url=https://www.mozilla.org/en-US/firefox/33.0/releasenotes/ |accessdate=October 14, 2014}}</ref>
* Windows: OMTC enabled by default.
* OpenH264 support (sandboxed).
* Improved search experience through the location bar.
* Slimmer and faster JavaScript strings.
* Search suggestions on the Firefox Start (about:home) and new tab (about:newtab) pages.
* New CSP (Content Security Policy) backend.
* Support for connecting to HTTP proxy over HTTPS.
* Improved reliability of the session restoration.
* Azerbaijani locale added.
* Proprietary window.crypto properties/functions removed.
* JSD (JavaScript Debugger Service) removed in favor of the Debugger interface.
* @counter-style rule from CSS3 Counter Styles specification implemented.
* DOMMatrix interface implemented.
* Cubic-bezier curves editor.
* Displayed which elements have listeners attached.
* New sidebar which displays a list of shortcuts to every @media rule in the current stylesheet.
* Paint flashing for browser content repaints.
* Editable @keyframes rules in the Rules section of the Inspector.
* CSS transform highlighter in the style-inspector.
* Fixed incomplete downloads being marked as complete by detecting broken HTTP1.1 transfers.
|-

| style="background:Salmon" | 33.0.1
| ''Firefox 33.0.1''
| October 24, 2014
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/33.0.1/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=October 24, 2014 |accessdate=October 27, 2014}}</ref>
* Fixed: Firefox displays a black screen at startup with certain graphics drivers.
|-

| style="background:Salmon" | 33.0.2
| ''Firefox 33.0.2''
| October 28, 2014
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/33.0.2/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=October 28, 2014 |accessdate=October 29, 2014}}</ref>
* Fixed a startup crash with some combination of hardware and drivers.
|-

| style="background:Salmon" | 33.0.3
| ''Firefox 33.0.3''
| November 6, 2014
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/33.0.3/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=November 6, 2014 |accessdate=November 7, 2014}}</ref>
* Blacklisted graphics drivers that were causing black screens with OMTC enabled.
* Fixed two startup crashes with some combination of hardware and drivers.
|-

| style="background:Salmon" | 33.1
| ''Firefox 33.1''
| November 10, 2014
| ''Firefox's 10-year anniversary.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/33.1/releasenotes/|title=Mozilla Firefox 33.1 Release Notes|publisher=Mozilla.org|date=November 10, 2014|accessdate=November 10, 2014}}</ref><ref>{{cite web|url=https://wiki.mozilla.org/Firefox/Decade|title=Firefox/Decade – MozillaWiki|author=|date=|work=mozilla.org|accessdate=October 21, 2016}}</ref>
* Forget button added.
* Enhanced tiles.
* Privacy tour introduced.
* Adding DuckDuckGo as a search option.
|-

| style="background:Salmon" | 33.1.1
| ''Firefox 33.1.1''
| November 14, 2014
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/33.1.1/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=November 14, 2014 |accessdate=November 15, 2014}}</ref>
* Fixed a startup crash.
''on December 1, 2014''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 34.0a1
| ''Firefox 34.0 Nightly''
| July 22, 2014
| ''First Firefox 34.0 Nightly build.''
|-

| style="background:Pink" | 34.0a2
| ''Firefox 34.0 Aurora''
| September 2, 2014
| ''First Firefox 34.0 Aurora build.''
|-

| style="background:Pink" | 34.0b1
| ''Firefox 34.0 Beta 1''
| October 16, 2014
| ''First Firefox 34.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/34.0beta/releasenotes/ |title=Firefox — Beta Notes (34.0beta) — Mozilla |publisher=Mozilla |date=2014-10-16 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 34.0
| ''Firefox 34.0''
| December 1, 2014
| ''Official Firefox 34.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 34.0"/>-->
* Default search engine changed to Yandex for Belarusian, Kazakh, and Russian locales.
* Improved search bar (en-US only).
* Firefox Hello real-time communication client.
* Easily switch themes/personas directly in the Customizing mode.
* Misplaced Pages search now uses HTTPS for secure searching (en-US only).
* Implementation of HTTP/2 (draft14) and ALPN.
* Recover from a locked Firefox process in the "Firefox is already running" dialog on Windows.
* Disabled SSLv3.
* Proprietary <code>window.crypto</code> properties/functions re-enabled (to be removed in Firefox 35).
* Firefox signed by Apple OS X version 2 signature.
* ECMAScript 6 WeakSet Implemented.
* JavaScript Template Strings Implemented.
* CSS3 Font variants and features control (e.g. kerning) implemented.
* WebCrypto:
** RSA-OAEP, PBKDF2, ECDH, and AES-KW support.
** <code>wrapKey</code> and <code>unwrapKey</code> implemented.
** Import/export of JWK-formatted keys.
* matches() DOM API implemented (formerly mozMatchesSelector()).
* <code>Performance.now()</code> for workers implemented.
* WebIDE: Create, edit, and test a new Web application from your browser.
* Highlight all nodes that match a given selector in the Style Editor and the Inspector's Rules panel.
* Improved User Interface of the Profiler.
* <code>console.table</code> function added to web console.
* Fixed: CSS transitions start correctly when started at the same time as changes to display, position, overflow, and similar properties.
|-

| style="background:Salmon" | 34.0.5
| ''Firefox 34.0.5''
| December 1, 2014
| '''Desktop'''
''Official Firefox 34.0.5 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 34.0.5" />-->
* Default search engine changed to Yahoo! for North America.
''on January 13, 2015''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 35.0a1
| ''Firefox 35.0 Nightly''
| September 2, 2014
| ''First Firefox 35.0 Nightly build.''
|-

| style="background:Pink" | 35.0a2
| ''Firefox 35.0 Aurora''<br />''Firefox 35.0 Developer Edition''
| October 14, 2014
| ''First Firefox 35.0 Aurora build.''
Renamed to ''Firefox Developer Edition'' since November 10, 2014.<ref>"Version 35.0a2, first offered to Firefox Developer Edition users on November 10, 2014" {{cite web|url=https://www.mozilla.org/en-US/firefox/35.0a2/auroranotes/|title=Firefox — Aurora Notes (35.0a2) — Mozilla|date=2014-11-10|accessdate=2014-11-21}}</ref><ref>{{cite web|url=https://bugzilla.mozilla.org/show_bug.cgi?id=1072181|title=Bug 1072181 – Investigate tweaking aurora for developers |accessdate=2014-11-21}}</ref>
|-

| style="background:Pink" | 35.0b1
| ''Firefox 35.0 Beta 1''
| December 4, 2014
| ''First Firefox 35.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/35.0beta/releasenotes/ |title=Firefox — Beta Notes (35.0beta) — Mozilla |publisher=Mozilla |date=2014-12-04 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 35.0
| ''Firefox 35.0''
| January 13, 2015
| ''Official Firefox 35.0 release.''<ref name="Firefox 35.0">{{cite web |url=https://www.mozilla.org/en-US/firefox/35.0/releasenotes/ |title=Firefox – Notes (35.0) – Mozilla |publisher=Mozilla |accessdate=January 13, 2015}}</ref>
* Firefox Hello with new rooms-based conversations model.
* New search UI improved and enabled for more locales.
* Access the Firefox Marketplace from the Tools menu and optional toolbar button.
* Built-in support for H264 (MP4) on Mac OS X Snow Leopard (10.6) and newer through native APIs.
* Use of tiled rendering on Mac OS X.
* Improved high quality image resizing performance.
* Improved handling of dynamic styling changes to increase responsiveness.
* Implemented HTTP Public Key Pinning Extension (for enhanced authentication of encrypted connections).
* Added support for the CSS Font Loading API.
* Resource Timing API implemented.
* CSS filters enabled by default.
* Changed JavaScript 'let' semantics to match the ES6 specification.
* Support for inspecting ::before and ::after pseudo elements.
* Computed view: Nodes matching the hovered selector are now highlighted.
* Network Monitor: New request/response headers view.
* Added support for the EXT_blend_minmax WebGL extension.
* Fixed: Show DOM Properties context menu item in inspector.
* Reduced resource usage for scaled images.
* PDF.js updated to version 1.0.907.
* Non-HTTP(S) XHR now returns correct status code.
|-

| style="background:Salmon" | 35.0.1
| ''Firefox 35.0.1''
| January 26, 2015 (desktop)<br />February 2, 2015 (Android)
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/35.0.1/releasenotes/ |title=Firefox notes – Desktop |publisher=mozilla.org |date=January 26, 2015 |accessdate=January 27, 2015}}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="FF35.0.1 Mobile" />-->
* Fixed a crash with the Enhanced Steam extension.
* Fixed a potential startup crash.
* Fixed Kerberos authentication failure with alias.
* Fixed SVG / CSS animation regression causing rendering issues on websites like openstreetmap.org.
* Fixed a crash on Godaddy webmail.
* Fixed an update failure of document.baseURI to document.location after base tag was removed from DOM for site with a CSP.
* Fixed a text selection broken with a Right-to-left (RTL) version of Firefox.
* CSP had a change in behavior with regard to case sensitivity resources loading.
;Android
* Fixed crash with video playback on Asus MeMO Pad 10 and 8, Tesco Hudl, Lenovo Lifetab E models, and several other devices running the Rockchip SoC.
''on February 24, 2015''.
|-

| style="vertical-align:top;" rowspan="8" | ''']'''
| style="background:Pink" | 36.0a1
| ''Firefox 36.0 Nightly''
| October 14, 2014
| ''First Firefox 36.0 Nightly build.''
|-

| style="background:Pink" | 36.0a2
| ''Firefox 36.0 Developer Edition''
| December 5, 2014
| ''First Firefox 36.0 Developer Edition build.''
|-

| style="background:Pink" | 36.0b1
| ''Firefox 36.0 Beta 1''
| January 15, 2015
| ''First Firefox 36.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/36.0beta/releasenotes/ |title=Firefox — Beta Notes (36.0beta) — Mozilla |publisher=Mozilla |date=2015-01-15 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 36.0
| ''Firefox 36.0''
| February 24, 2015 (desktop)<br />February 27, 2015 (Android)
| ''Official Firefox 36.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 36.0"/>-->
* Pinned tiles on the new tab page can be synced.
* Added full support for ].
* Locale added: Uzbek (UZ).
* Remote option removed.
* No longer accepting insecure RC4 ciphers whenever possible.
* Phasing out Certificates with 1024-bit RSA Keys.
* Shut down hangs will now show the crash reporter before exiting the program.
* Add-on compatibility changed.
* Support for the ECMAScript 6 Symbol data type added.
* Unicode-range CSS descriptor implemented.
* CSSOM-View scroll behavior implemented allowing smooth scrolling of content without custom libraries.
* Object-fit and object-position implemented.
* Isolation CSS property implemented.
* CSS3 will-change property implemented.
* Changed JavaScript 'const' semantics to conform better to the ES6 specification.
* Improved ES6 generators for better performance.
* Eval sources now appear in the Debugger.
* DOM Promises inspection.
* Inspector: More paste options in markup view.
* CSS gradients work on premultiplied colors.
* Fixed some unexpected logout from Facebook or Google after restart.
|-

| style="background:Salmon" | 36.0.1
| ''Firefox 36.0.1''
| March 5, 2015 (desktop)<br />March 6, 2015 (Android)
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/36.0.1/releasenotes/ |title=Firefox — Notes (36.0.1) — Mozilla |publisher=mozilla.org |date=March 5, 2015 |accessdate=March 7, 2015}}</ref>
* Disabled the usage of the ANY DNS query type.
* Fixed a startup crash with EMET.
* Fixed the Hello contact that may become inactive until restart.
* Fixed print preferences that may not be preserved.
* Fixed Hello contact tabs that may not be visible.
* Accepted hostnames that include an underscore character <code>_</code>.
* Fixed the WebGL that may use significant memory with Canvas2d.
* Option -remote has been restored.
* Fixed a top crash.
|-

| style="background:Salmon" | 36.0.2
| ''Firefox 36.0.2''
| March 16, 2015
| '''Android'''
''Off-cycle stability mobile update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/mobile/36.0.2/releasenotes/ |title=Firefox for Android — Notes (36.0.2) — Mozilla |publisher=mozilla.org |date=March 16, 2015 |accessdate=March 31, 2015}}</ref>
* Fixed a startup crash on HTC One M8 devices (Verizon) with Android 5.0.1.
* Fixed some potential crashes with Flash videos.
|-

| style="background:Salmon" | 36.0.3
| ''Firefox 36.0.3''
| March 20, 2015
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/36.0.3/releasenotes/ |title=Firefox — Notes (36.0.3) — Mozilla |publisher=mozilla.org |date=March 20, 2015 |accessdate=March 21, 2015}}</ref>{{Citation needed|date=June 2017}}<!-- Empty references <ref name="Firefox 36.0.3 Mobile"/>-->
* Security fix for an issue disclosed at HP Zero Day Initiative's Pwn2Own contest.
|-

| style="background:Salmon" | 36.0.4
| ''Firefox 36.0.4''
| March 21, 2015
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/36.0.4/releasenotes/ |title=Firefox — Notes (36.0.4) — Mozilla |publisher=mozilla.org |date=March 21, 2015 |accessdate=March 22, 2015}}</ref>{{Citation needed|date=June 2017}}<!-- Empty references <ref name="Firefox 36.0.4 Mobile"/>-->
* Security fix for an issue disclosed at HP Zero Day Initiative's Pwn2Own contest.
''on March 31, 2015''.
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" | 37.0a1
| ''Firefox 37.0 Nightly''
| November 28, 2014
| ''First Firefox 37.0 Nightly build.''
|-

| style="background:Pink" | 37.0a2
| ''Firefox 37.0 Developer Edition''
| January 16, 2015
| ''First Firefox 37.0 Developer Edition build.''
|-

| style="background:Pink" | 37.0b1
| ''Firefox 37.0 Beta 1''
| February 26, 2015
| ''First Firefox 37.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/37.0beta/releasenotes/ |title=Firefox — Beta Notes (37.0beta) — Mozilla |publisher=Mozilla |date=2015-02-26 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 37.0
| ''Firefox 37.0''
| March 31, 2015
| ''Official Firefox 37.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 37.0"/>-->
* Heartbeat user rating system – your feedback about Firefox.
* Yandex set as default search provider for the Turkish locale.
* Bing search now uses HTTPS for secure searching.
* Improved protection against site impersonation via OneCRL centralized certificate revocation.
* Opportunistically encrypts HTTP traffic where the server supports HTTP/2 AltSvc.
* Disabled insecure TLS version fallback for site security.
* Extended SSL error reporting for reporting non-certificate errors.
* TLS False Start optimization now requires a cipher suite using AEAD construction.
* Improved certificate and TLS communication security by removing support for DSA.
* Improved performance of WebGL rendering on Windows.
* Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube.
* Added support for CSS display:contents.
* IndexedDB now accessible from worker threads.
* New SDP/JSEP implementation in WebRTC.
* Debug tabs opened in Chrome Desktop, Chrome for Android, and Safari for iOS.
* New Inspector animations panel to control element animations.
* New Security Panel included in Network Panel.
* Debugger panel support for <code>chrome://</code> and <code>about://</code> URIs.
* Added logging of weak ciphers to the web console.
|-

| style="background:Salmon" | 37.0.1
| ''Firefox 37.0.1''
| April 3, 2015
| ''Off-cycle stability and security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/37.0.1/releasenotes/ |title=Firefox — Notes (37.0.1) — Mozilla |publisher=mozilla.org |date=April 3, 2015 |accessdate=April 4, 2015}}</ref>
* Disabled HTTP/2 AltSvc.
;Desktop
* Fixed start-up crash due to graphics hardware and third party software.
;Android
* Fixed crash due to WebRTC usage on certain web sites.
|-

| style="background:Salmon" | 37.0.2
| ''Firefox 37.0.2''
| April 14, 2015 (Android)<br />April 20, 2015 (desktop)
| ''Off-cycle stability and security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/37.0.2/releasenotes/ |title=Firefox — Notes (37.0.2) — Mozilla |publisher=mozilla.org |date=April 20, 2015 |accessdate=April 20, 2015}}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 37.0.2 Mobile"/>-->
; Desktop
* Fixed an issue with Google Maps rendering incorrectly in some cases.
* Fixed stability issues for some graphics hardware and feature sets.
* Security fixes.
; Android
* Fixed an issue related to the "request desktop site" feature.
''on May 12, 2015''.
|-

| style="vertical-align:top;" rowspan="23" | ''']'''
| style="background:Pink" | 38.0a1
| ''Firefox 38.0 Nightly''
| January 12, 2015
| ''First Firefox 38.0 Nightly build.''
|-

| style="background:Pink" | 38.0a2
| ''Firefox 38.0 Developer Edition''
| February 27, 2015
| ''First Firefox 38.0 Developer Edition build.''
|-

| style="background:Pink" | 38.0b1
| ''Firefox 38.0 Beta 1''
| April 3, 2015
| ''First Firefox 38.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/38.0beta/releasenotes/ |title=Firefox — Beta Notes (38.0beta) — Mozilla |publisher=Mozilla |date=2015-04-03 |accessdate=2017-06-13}}</ref>
|-

| style="background:salmon" | 38.0
| ''Firefox 38.0''
| May 12, 2015
| ''Official Firefox 38.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 38.0"/>-->
* New tab-based preferences.
* Ruby annotation support.
* Base for the next ESR release.
* autocomplete=off is no longer supported for username/password fields.
* URL parser avoids doing percent encoding when setting the Fragment part of the URL, and percent decoding when getting the Fragment in line with the URL spec.
* RegExp.prototype.source now returns "(?:)" instead of the empty string for empty regular expressions.
* Improved page load times via speculative connection warmup.
* WebSocket now available in web workers.
* BroadcastChannel API implemented.
* Implemented srcset attribute and <picture> element for responsive images.
* Implemented DOM3 Events KeyboardEvent.code.
* Mac OS X: Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube.
* Implemented Encrypted Media Extensions (EME) API to support encrypted HTML5 video/audio playback (Windows Vista or later only).
* Automatically downloaded Adobe Primetime Content Decryption Module (CDM) for DRM playback through EME (Windows Vista or later only).
* Optimized-out variables are now visible in Debugger UI.
* XMLHttpRequest logs in the web console are now visually labelled and can be filtered separately from regular network requests.
* WebRTC now has multistream and renegotiation support.
* copy command added to console.
|-

| style="background:salmon" | 38.0esr
| ''Firefox 38.0esr''
| May 12, 2015
| ''Official Firefox 38.0 Extended Support Release (ESR).''<ref name="Mozilla Firefox ESR" />
|-

| style="background:salmon" | 38.0.1
| ''Firefox 38.0.1''
| May 14, 2015 (desktop)<br />May 15, 2015 (Android)
| ''Off-cycle stability update.''<ref name="38.0.1">{{cite web |url=https://www.mozilla.org/en-US/firefox/38.0.1/releasenotes/ |title=Firefox — Notes (38.0.1) — Mozilla |publisher=mozilla.org |date=May 14, 2015 |accessdate=May 14, 2015}}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 38.0.1 Mobile"/>-->
;Desktop
* Fixed a crash on start-up with first generation NVidia Optimus graphics cards.
* Fixed a problem in which users who import cookies from Google Chrome can end up with broken websites.
* Fixed a problem that large animated images may fail to play and may stop other images from loading.
* Fixed a problem that WebRTC H264 video streams from CiscoSpark native clients are not decoded correctly (Fixed in Firefox ESR 38.0.1; was already fixed in Firefox 38.0).
;Android
* Fixed a crash on start-up on devices for which Firefox does not support Android hardware acceleration.
* Fixed a problem that large animated images may fail to play and may stop other images from loading.
* Fixed a problem that Mozilla Location Service (MLS) stumbler may not submit all data.
|-

| style="background:Salmon;" | 38.0.1esr
| ''Firefox 38.0.1esr''
| May 14, 2015
| ''Off-cycle stability update.''<ref name="38.0.1" />
|-

| style="background:Salmon;" | 38.0.5
| ''Firefox 38.0.5''
| June 2, 2015
| ''Official Firefox 38.0.5 release.''<ref name="38.0.5">{{cite web |url=https://www.mozilla.org/en-US/firefox/38.0.5/releasenotes/ |title=Firefox — Notes (38.0.5) — Mozilla |publisher=mozilla.org |date=June 2, 2015 |accessdate=June 3, 2015}}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 38.0.5 Mobile"/>-->
;Desktop
* Integration of ].
* Implementation of Reader View.
* Share the active tab or window in a Hello conversation.
* Fixed a problem that would cause Firefox to stop painting when switching tabs.
* Fixed graphics performance when using the built-in VGA driver on Windows 7.
;Android
* Integrated Adjust SDK to measure aggregate installs.
* Fixed various stability fixes.
''on July 2, 2015''.
|-

| style="background:Salmon;" | 38.0.6
| ''Firefox 38.0.6''
| June 9, 2015
| ''Off-cycle update.''
;Desktop
*Fixes bugs in Firefox 38.0.5 funnelcake builds.
''on July 2, 2015''.
|-

| style="background:Salmon;" | 38.1.0esr
| ''Firefox 38.1.0esr''
| July 2, 2015
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.1.0/releasenotes/ |title=Firefox — Notes (38.1.0) — Mozilla |publisher=mozilla.org |date=July 2, 2015 |accessdate=July 3, 2015}}</ref>
|-

| style="background:Salmon;" | 38.1.1esr
| ''Firefox 38.1.1esr''
| August 6, 2015
| ''Off-cycle security update.''{{Citation needed|date=June 2017}}
* Patches ].<ref name="2015-08-07 Zero Day">{{cite web |url=https://blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild/ |title=Firefox exploit found in the wild |publisher=mozilla.org |date=August 6, 2015 |accessdate=August 7, 2015}}</ref>
|-

| style="background:Salmon;" | 38.2.0esr
| ''Firefox 38.2.0esr''
| August 11, 2015
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.2.0/releasenotes/ |title=Firefox — Notes (38.2.0) — Mozilla |publisher=mozilla.org |date=August 11, 2015 |accessdate=August 11, 2015}}</ref>
* Fixed: Firefox may become unresponsive after right-clicking Flash content on Windows 8.
* Fixed: Firefox may crash during mp4 video playback.
* Fixed branded Firefox application that does not open URLs in system default browser.
* Fixed significant memory leak with GreaseMonkey add-on.
* Fixed crash <code></code> on browser shutdown.
* Fixed browser UI that becomes unresponsive state when using Unity Web Player Plugin.
* Fixed ESRs that would not build on hppa platform.
* Fixed <code>crash in mozilla::layers::SyncObjectD3D11::FinalizeFrame()</code>.
|-

| style="background:Salmon;" | 38.2.1esr
| ''Firefox 38.2.1esr''
| August 27, 2015
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.2.1/releasenotes/ |title=Firefox — Notes (38.2.1) — Mozilla |publisher=mozilla.org |date=August 27, 2015 |accessdate=August 28, 2015}}</ref>
|-

| style="background:Salmon;" | 38.3.0esr
| ''Firefox 38.3.0esr''
| September 22, 2015
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.3.0/releasenotes/ |title=Firefox — Notes (38.3.0) — Mozilla |publisher=mozilla.org |date=September 22, 2015 |accessdate=September 22, 2015}}</ref>
|-

| style="background:Salmon;" | 38.4.0esr
| ''Firefox 38.4.0esr''
| November 3, 2015
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.4.0/releasenotes/ |title=Firefox — Notes (38.4.0) — Mozilla |publisher=mozilla.org |date=November 3, 2015 |accessdate=November 3, 2015}}</ref>
|-

| style="background:Salmon;" | 38.5.0esr
| ''Firefox 38.5.0esr''
| December 15, 2015
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.5.0/releasenotes/ |title=Firefox — Notes (38.5.0) — Mozilla |publisher=mozilla.org |date=December 15, 2015 |accessdate=December 15, 2015}}</ref>
* Improved stability with Java.
|-

| style="background:Salmon;" | 38.5.1esr
| ''Firefox 38.5.1esr''
| December 21, 2015
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.5.1/releasenotes/ |title=Firefox — Notes (38.5.1) — Mozilla |publisher=mozilla.org |date=December 21, 2015 |accessdate=December 26, 2015}}</ref>
* Preparing to use SHA-256 signing certificate for Windows builds, to meet new signing requirement.
|-

| style="background:Salmon;" | 38.5.2esr
| ''Firefox 38.5.2esr''
| December 22, 2015
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.5.2/releasenotes/ |title=Firefox — Notes (38.5.2) — Mozilla |publisher=mozilla.org |date=December 22, 2015 |accessdate=December 26, 2015}}</ref>
* Use of a SHA-256 signing certificate for Windows builds, to meet new signing requirements.
|-

| style="background:Salmon;" | 38.6.0esr
| ''Firefox 38.6.0esr''
| January 26, 2016
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.6.0/releasenotes/ |title=Firefox — Notes (38.6.0) — Mozilla |publisher=mozilla.org |date=January 26, 2016 |accessdate=January 27, 2016}}</ref>
|-

| style="background:Salmon;" | 38.6.1esr
| ''Firefox 38.6.1esr''
| February 11, 2016
| ''Off-cycle graphite2 library update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.6.1/releasenotes/ |title=Firefox — Notes (38.6.1) — Mozilla |publisher=mozilla.org |date=February 11, 2016 |accessdate=February 16, 2016}}</ref>
* Updated graphite2 library to latest release.
|-

| style="background:Salmon;" | 38.7.0esr
| ''Firefox 38.7.0esr''
| March 8, 2016
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.7.0/releasenotes/ |title=Firefox — Notes (38.7.0) — Mozilla |publisher=mozilla.org |date=March 8, 2016 |accessdate=March 8, 2016}}</ref>
|-

| style="background:Salmon;" id="Firefox 38.7.1 ESR" | 38.7.1esr
| ''Firefox 38.7.1esr''
| March 16, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.7.1/releasenotes/ |title=Firefox — Notes (38.7.1) — Mozilla |publisher=mozilla.org |date=March 16, 2016 |accessdate=March 21, 2016}}</ref>
* Fixed an issue in which loading from history can show the wrong url in the location bar.
* Disabled Graphite font shaping library.
|-

| style="background:Salmon;" id="Firefox 38.8.0 ESR" | 38.8.0esr
| ''Firefox 38.8.0esr''
| April 26, 2016
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/38.8.0/releasenotes/ |title=Firefox — Notes (38.8.0) — Mozilla |publisher=mozilla.org |date=April 26, 2016 |accessdate=April 26, 2016}}</ref> ''on June 7, 2016''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 39.0a1
| ''Firefox 39.0 Nightly''
| February 23, 2015
| ''First Firefox 39.0 Nightly build.''
|-

| style="background:Pink" | 39.0a2
| ''Firefox 39.0 Developer Edition''
| April 3, 2015
| ''First Firefox 39.0 Developer Edition build.''
|-

| style="background:Pink" | 39.0b1
| ''Firefox 39.0 Beta 1''
| May 28, 2015
| ''First Firefox 39.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/39.0beta/releasenotes/ |title=Firefox — Beta Notes (39.0beta) — Mozilla |publisher=Mozilla |date=2015-05-28 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon;" | 39.0
| ''Firefox 39.0''
| July 2, 2015
| ''Official Firefox 39.0 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/39.0/releasenotes/ |title=Firefox — Beta Notes (39.0) — Mozilla |publisher=Mozilla |date=2015-07-02 |accessdate=2017-11-13}}</ref>
* Share Hello URLs with social networks.
* Project Silk for Mac OS X: Smoother animation and scrolling.
* Support for 'switch' role in ARIA 1.1 (web accessibility).
* SafeBrowsing malware detection lookups enabled for downloads on Mac OS X and Linux.
* Support for new Unicode 8.0 skin tone emoji.
* Removed support for insecure SSLv3 for network communications.
* Disable use of RC4 except for temporarily whitelisted hosts.
* The malware detection service for downloads now covers common Mac file types.
* Performance of displaying dashed lines is improved on Mac OS X.
* List-style-type now accepts a string value.
* Enable the Fetch API for network requests from dedicated, shared and service workers.
* Cascading of CSS transitions and animations now matches the current spec.
* Implement <link rel="preconnect">allowing anticipation of a future connection without revealing any information.
* Added support for CSS Scroll Snap Points.
* Drag and drop enabled for nodes in Inspector markup view.
* Webconsole input history persists even after closing the toolbox.
* Cubic bezier tooltip now shows a gallery of timing-function presets for use with CSS animations.
* localhost is now available offline for WebSocket connections.
* Improve performance for IPv6 fallback to IPv4.
* Fixed incomplete downloads being marked as complete by detecting broken HTTP1.1 transfers.
* Fixed the security state indicator on a page now correctly ignores loads caused by previous pages.
* Fixed an issue where a Hello conversation window would sometimes fail to open.
* Fixed a regression that could lead to Flash not displaying has been fixed.
* Update to NSS 3.19.2.
|-

| style="background:Salmon;" | 39.0.3
| ''Firefox 39.0.3''
| August 6, 2015
| ''Off-cycle security update.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 39.0.3"/>-->
* Patches ].<ref name="2015-08-07 Zero Day" />
''on August 11, 2015''.
|}

==== Versions 40 through 49 ====

{{#section:Firefox release history|color table}}

{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" | 40.0a1
| ''Firefox 40.0 Nightly''
| March 30, 2015
| ''First Firefox 40.0 Nightly build.''
|-

| style="background:Pink" | 40.0a2
| ''Firefox 40.0 Developer Edition''
| May 15, 2015
| ''First Firefox 40.0 Developer Edition build.''
|-

| style="background:Pink" | 40.0b1
| ''Firefox 40.0 Beta 1''
| July 3, 2015
| ''First Firefox 40.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/40.0beta/releasenotes/ |title=Firefox — Beta Notes (40.0beta) — Mozilla |publisher=Mozilla |date=2015-07-03 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon;" | 40.0
| ''Firefox 40.0''
| August 11, 2015
| ''Official Firefox 40.0 release.''
* Support for Windows 10.
* Added protection against unwanted software downloads.
* User can receive suggested tiles in the new tab page based on categories Firefox matches to browsing history (en-US only).
* Hello allows adding a link to conversations to provide context on what the conversation will be about.
* New style for add-on manager based on the in-content preferences style.
* Improved scrolling, graphics, and video playback performance with off-main-thread compositing (Linux only).
* Graphic blocklist mechanism improved: Firefox version ranges can be specified, limiting the number of devices blocked.
* Add-on extensions that are not signed by Mozilla will display a warning.
* NPAPI Plug-in performance improved via asynchronous initialization.
* Smoother animation and scrolling with hardware vsync (Windows only).
* JPEG images use less memory when scaled and can be painted faster.
* Sub-resources can no longer request HTTP authentication, thus protecting users from inadvertently disclosing login data.
* IndexedDB transactions are now non-durable by default.
* Implemented AudioBufferSourceNode.detune to modulate playback rate in cents, a logarithmic unit of measure used for musical intervals.
* Improved Performance tools in the developer tools: Waterfall view, Call Tree view and a Flame Chart view.
* New rules view tooltip in the Inspector to tweak CSS Filter values.
* Console API messages from SharedWorker and ServiceWorker are now displayed in web console.
* New page ruler highlighting tool that displays lightweight horizontal and vertical rules on a page.
* Inspector now searches across all content frames in a page.
* Fixed Kannada text that does not display properly in built-in pdf viewer.
|-

| style="background:Salmon;" | 40.0.2
| ''Firefox 40.0.2''
| August 13, 2015
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/40.0.2/releasenotes/ |title=Firefox — Notes (40.0.2) — Mozilla |publisher=mozilla.org |date=August 13, 2015 |accessdate=August 18, 2015}}</ref>
* Enabled API allowing Windows 10 users to open settings dialog.
* Fixed mozalloc.lib that was missing from the xulrunner package.
* Fixed a startup crash with some combination of hardware and drivers.
|-

| style="background:Salmon;" | 40.0.3
| ''Firefox 40.0.3''
| August 27, 2015
| ''Off-cycle stability and security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/40.0.3/releasenotes/ |title=Firefox — Notes (40.0.3) — Mozilla |publisher=mozilla.org |date=August 27, 2015 |accessdate=August 28, 2015}}</ref>
* Disabled the asynchronous plugin initialization.
* Fixed a segmentation fault in the GStreamer support (Linux only).
* Fixed a startup crash when using DisplayLink (Windows only).
* Fixed a regression with some Japanese fonts used in the &lt;input&gt; field.
* Fixed an issue that the selection in a select combox box using the mouse could be broken on some sites.
* Fixed an issue that some search partner codes were missing.
''on September 22, 2015''.
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" | 41.0a1
| ''Firefox 41.0 Nightly''
| May 11, 2015
| ''First Firefox 41.0 Nightly build.''
|-

| style="background:Pink" | 41.0a2
| ''Firefox 41.0 Developer Edition''
| July 2, 2015
| ''First Firefox 41.0 Developer Edition build.''
|-

| style="background:Pink" | 41.0b1
| ''Firefox 41.0 Beta 1''
| August 12, 2015
| ''First Firefox 41.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/41.0beta/releasenotes/ |title=Firefox — Beta Notes (41.0beta) — Mozilla |publisher=Mozilla |date=2015-08-12 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 41.0
| ''Firefox 41.0''
| September 22, 2015
| ''Official Firefox 41.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 41.0"/>-->
* Enhanced IME support on Windows (Vista +) using TSF (Text Services Framework).
* Ability to set a profile picture for your Firefox Account.
* Firefox Hello now includes instant messaging.
* SVG images can be used as favicons.
* Improved box-shadow rendering performance.
* WebRTC now requires perfect forward secrecy.
* WARP is disabled on Windows 7.
* Updates to image decoding process.
* Support for running animations of 'transform' and 'opacity' on the compositor thread.
* MessageChannel and MessagePort API enabled by default.
* Added support for the transform-origin property on SVG elements.
* CSS Font Loading API enabled by default.
* <code>Navigator.onLine</code> now varies with actual internet connectivity (Windows and Mac OS X only).
* Copy/Cut Web content from JavaScript to the OS clipboard with <code>document.execCommand("cut"/"copy")</code>.
* Implemented Cache API for querying named caches that are accessible Window, Worker, and ServiceWorker.
* Removed support for binary XPCOM components in extensions, use addon SDK "system/child_process" pipe mechanism for native binaries instead.
* Network requests can be exported in HAR format.
* Quickly adds new CSS rule with New Rule button in the Inspector.
* Screenshots a node or element from markup view with the Screenshot Node context menu item.
* Copies element CSS rule declarations with the Copy Rule Declaration context menu item in the Inspector.
* Pseudo-Class panel in the Inspector.
* Fixed an issue where picture element does not react to resize/viewport changes.
|-

| style="background:Salmon" | 41.0.1
| ''Firefox 41.0.1''
| September 30, 2015
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/41.0.1/releasenotes/ |title=Firefox — Notes (41.0.1) — Mozilla |publisher=mozilla.org |date=September 30, 2015 |accessdate=October 1, 2015}}</ref>
* Fixed a startup crash related to Yandex toolbar and Adblock Plus.
* Fixed potential hangs with Flash plugins.
* Fixed a regression in the bookmark creation.
* Fixed a startup crash with some Intel Media Accelerator 3150 graphic cards.
* Fixed a graphic crash, occurring occasionally on Facebook.
|-

| style="background:Salmon" | 41.0.2
| ''Firefox 41.0.2''
| October 15, 2015
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/41.0.2/releasenotes/ |title=Firefox — Notes (41.0.2) — Mozilla |publisher=mozilla.org |date=October 15, 2015 |accessdate=October 24, 2015}}</ref> ''on November 3, 2015''.
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Pink" | 42.0a1
| ''Firefox 42.0 Nightly''
| July 2, 2015
| ''First Firefox 42.0 Nightly build.''
|-

| style="background:Pink" | 42.0a2
| ''Firefox 42.0 Developer Edition''
| August 14, 2015
| ''First Firefox 42.0 Developer Edition build.''
|-

| style="background:Pink" | 42.0b1
| ''Firefox 42.0 Beta 1''
| September 23, 2015
| ''First Firefox 42.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/42.0beta/releasenotes/ |title=Firefox — Beta Notes (42.0beta) — Mozilla |publisher=Mozilla |date=2015-09-23 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 42.0
| ''Firefox 42.0''
| November 3, 2015
| ''Official Firefox 42.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 42.0"/>-->
* Private Browsing with Tracking Protection that blocks certain Web elements that could be used to record your behavior across sites.
* Control Center that contains site security and privacy controls.
* Indicator added to tabs that play audio with one-click muting.
* WebRTC improvements:
** IPV6 support.
** Preferences for controlling ICE candidate generation and IP exposure.
** Hooks for extensions to allow/deny createOffer/Answer.
** Improved ability for applications to monitor and control which devices are used in getUserMedia.
* Login Manager improvements:
** Improved heuristics to save usernames and passwords.
** Editing and showing all logins in line, Copy/Paste usernames/passwords from the Context menu.
** Migration imports your passwords to Firefox from Google Chrome for Windows and Internet Explorer; import anytime from the Login Manager.
* Improved performance on interactive websites that trigger a lot of restyles.
* Implemented ES6 Reflect.
* Support for ImageBitmap and <code>createImageBitmap()</code>.
* Media Source Extension for HTML5 video available for all sites.
* Viewing HTML source in a tab.
* Remote website debugging over WiFi (no USB cable or ADB needed).
* Asynchronous call stacks now allow web developers to follow the code flow through setTimeout, DOM event handlers, and Promise handlers.
* Configurable Firefox OS Simulator in WebIDE, to simulate reference devices like phones, tablets, even TVs.
* CSS filter presets in the Inspector.
* Ability to save filter presets inside CSS Filter Tooltip.
''on December 15, 2015''.
|-

| style="vertical-align:top;" rowspan="8" | ''']'''
| style="background:Pink" | 43.0a1
| ''Firefox 43.0 Nightly''
| August 10, 2015
| ''First Firefox 43.0 Nightly build.''
|-

| style="background:Pink" | 43.0a2
| ''Firefox 43.0 Developer Edition''
| September 22, 2015
| ''First Firefox 43.0 Developer Edition build.''
|-

| style="background:Pink" | 43.0b1
| ''Firefox 43.0 Beta 1''
| November 3, 2015
| ''First Firefox 43.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/43.0beta/releasenotes/ |title=Firefox — Beta Notes (43.0beta) — Mozilla |publisher=Mozilla |date=2015-11-03 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 43.0
| ''Firefox 43.0''
| December 15, 2015
| ''Official Firefox 43.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 43.0"/>-->
* Private Browsing with Tracking Protection offers choice of blocking additional trackers.
* Improved API support for m4v video playback.
* Firefox 64-bit for Windows is now available via the Firefox download page.
* Users can choose search suggestions from the Awesome Bar.
* On-screen keyboard displayed on selecting input field on devices running Windows 8 or greater.
* Firefox Health Report has switched to use the same data collection mechanism as telemetry.
* Markup view shows indicators for pseudo-classes locked for elements.
* Binding F1 key to open the settings when the toolbox is focused.
* New 'Use in Console' context menu item in Inspector to store selected element in a temporary variable.
* Search button next to overridden CSS properties to find similar properties in the rules view.
* Ability to filter styles from their property names in the rules view.
* Stack traces are now shown for exceptions inside the console.
* Added ability to display server-side logs in the console.
* Ability to choose resolution for the GCLI screenshot command.
* Subresource integrity allows developers to make their sites more secure.
* Network requests in Console now link to Network panel instead of opening in a popup.
* Unprefixed 'hyphens' property is now supported.
* WebIDE now has a sidebar-based UI.
* The 'transform-origin' property is now supported on SVG elements.
* Animation inspector now displays animations in a timeline.
* Single-process mode is no longer supported for NPAPI plugins.
* Fixed an issue in which the Eyedropper tool does not work as expected when page is zoomed.
* Various security fixes.
|-

| style="background:Salmon" | 43.0.1
| ''Firefox 43.0.1''
| December 18, 2015
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/43.0.1/releasenotes/ |title=Firefox — Notes (43.0.1) — Mozilla |publisher=mozilla.org |date=December 18, 2015 |accessdate=December 26, 2015}}</ref>
* Preparing to use SHA-256 signing certificate for Windows builds, to meet new signing requirement.
|-

| style="background:Salmon" | 43.0.2
| ''Firefox 43.0.2''
| December 22, 2015
| '''Desktop'''
''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/43.0.2/releasenotes/ |title=Firefox — Notes (43.0.2) — Mozilla |publisher=mozilla.org |date=December 22, 2015 |accessdate=December 26, 2015}}</ref>
* Use of a SHA-256 signing certificate for Windows builds, to meet new signing requirements.
|-

| style="background:Salmon" | 43.0.3
| ''Firefox 43.0.3''
| December 28, 2015
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/43.0.3/releasenotes/ |title=Firefox — Notes (43.0.3) — Mozilla |publisher=mozilla.org |date=December 28, 2015 |accessdate=December 28, 2015}}</ref>
* Fixed network issue when using Nvidia's Network Access Manager.
* On some Windows configurations, improved the decoding of some videos on YouTube.
|-

| style="background:Salmon" | 43.0.4
| ''Firefox 43.0.4''
| January 6, 2016
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/43.0.4/releasenotes/ |title=Firefox — Notes (43.0.4) — Mozilla |publisher=mozilla.org |date=January 6, 2016 |accessdate=January 7, 2016}}</ref>
* Fix for startup crash for users of a third party antivirus tool.
* Multi-user GNU/Linux download folders can be created.
* Re-enabled SHA-1 certificates.
* The last version to support HTTP cookie prompts.
''on January 26, 2016''.
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" | 44.0a1
| ''Firefox 44.0 Nightly''
| September 21, 2015
| ''First Firefox 44.0 Nightly build.''
* This and newer versions erase the cookie permissions database of any previous Firefox version.
|-

| style="background:Pink" | 44.0a2
| ''Firefox 44.0 Developer Edition''
| November 3, 2015
| ''First Firefox 44.0 Developer Edition build.''
|-

| style="background:Pink" | 44.0b1
| ''Firefox 44.0 Beta 1''
| December 17, 2015
| ''First Firefox 44.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/44.0beta/releasenotes/ |title=Firefox — Beta Notes (44.0beta) — Mozilla |publisher=Mozilla |date=2015-12-17 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 44.0
| ''Firefox 44.0''
| January 26, 2016
| ''Official Firefox 44.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/44.0/releasenotes/ |title=Firefox — Notes (44.0) — Mozilla |publisher=mozilla.org |date=January 26, 2016}}</ref><br />This release has the cookie confirmation dialog removed.<ref>{{cite web |title=Bug 606655 – Remove "Ask me everytime" cookies option. |work=Mozilla Bugzilla |publisher=mozilla.org |date=2016-02-17 |url=https://bugzilla.mozilla.org/show_bug.cgi?id=606655 |accessdate=2016-02-18}}</ref>
* Improved warning pages for certificate errors and untrusted connections.
* Enabled H.264 if system decoder is available.
* Enabled WebM/VP9 video support on systems that don't support MP4/H.264.
* In the animation-inspector timeline, lightning bolt icon next to animations running on the compositor thread.
* Support for the brotli compression format via HTTPS content-encoding.
* Screenshot commands allow user choice of pixel ratio in Developer Tools.
* Fixed an issue where Windows XP and Vista screensaver doesn't disable when watching videos.
* Various security fixes.
* To support unicode-range descriptor for webfonts, font matching under Linux now uses the same font matching code as other platforms.
* Use of a SHA-256 signing certificate for Windows builds, to meet new signing requirements.
* Firefox has removed support for the RC4 decipher.
* Firefox will no longer trust the Equifax Secure Certificate Authority 1024-bit root certificate or the UTN – DATACorp SGC to validate secure website certificates.
* Stricter validation of web fonts.
* On-screen keyboard support temporarily turned off for Windows 8 and Windows 8.1.
* Right-clicking on a logged object in the console to store it as a global variable on the page.
* Visual tools for Animation:.
** View/Edit CSS animation keyframe rules directly in the inspector.
** Visually modify the cubic-bezier curve that drives the way animations progress through time.
** Discover and scrub through all CSS animations and transitions playing on the page.
** Learn more: <code>http://devtoolschallenger.com/</code>.
* Visual tools for Layout and Styles:
** Display rulers along the viewport to verify size and position and use the measurement tool to easily detect spacing and alignment problems.
** Use CSS filters to preview and create real-time effects like drop-shadows, sepia, etc..
** Learn more: <code>http://devtoolschallenger.com/</code>.
* New memory tool for inspecting the memory heap.
* Service Workers API.
* Built-in JSON reader to intuitively view, search, copy and save data without extensions.
* A jump to function definitions in the debugger with Cmd-Click.
* WebSocket Debugging API and add-on.
* The rule view now displays styles using their authored text, and edits in the rule view are now linked to the style editor.
|-

| style="background:Salmon" | 44.0.1
| ''Firefox 44.0.1''
| February 8, 2016
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/44.0.1/releasenotes/ |title=Firefox — Notes (44.0.1) — Mozilla |publisher=mozilla.org |date=February 8, 2016 |accessdate=February 16, 2016}}</ref>
* Fixed an issue which could lead to the removal of stored passwords under certain circumstances.
* Allows spaces in cookie names.
* Requires NSS 3.21.
* Fixed a crash in cache networking.
* Fix for using WebSockets in service worker controlled pages.
* Disabled opus/vorbis audio with H.264.
* Shipment for the Gecko SDK.
* Fix for graphics startup crash on GNU/Linux.
|-

| style="background:Salmon" | 44.0.2
| ''Firefox 44.0.2''
| February 11, 2016
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/44.0.2/releasenotes/ |title=Firefox — Notes (44.0.2) — Mozilla |publisher=mozilla.org |date=February 11, 2016 |accessdate=February 16, 2016}}</ref>
* Fixed an issue where Firefox hangs or crashes on startup.
''on March 8, 2016''.
|-

| style="vertical-align:top;" rowspan="20" | ''']'''
| style="background:Pink" | 45.0a1
| ''Firefox 45.0 Nightly''
| October 29, 2015
| ''First Firefox 45.0 Nightly build.''
|-

| style="background:Pink" | 45.0a2
| ''Firefox 45.0 Developer Edition''
| December 15, 2015
| ''First Firefox 45.0 Developer Edition build.''
|-

| style="background:Pink" | 45.0b1
| ''Firefox 45.0 Beta 1''
| January 27, 2016
| ''First Firefox 45.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/45.0beta/releasenotes/ |title=Firefox — Beta Notes (45.0beta) — Mozilla |publisher=Mozilla |date=2016-01-27 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" | 45.0
| ''Firefox 45.0''
| March 8, 2016
| ''Official Firefox 45.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 45.0"/>-->
* Instant browser tab sharing through Hello.
* Tabs synced via Firefox Accounts from other devices are now shown in dropdown area of Awesome Bar when searching.
* Synced Tabs button in button bar.
* Introduces a new preference <code>(network.dns.blockDotOnion)</code> to allow blocking <code>.onion</code> at the DNS level.
* Guarani locale added.
* URLs containing a Unicode-format Internationalized Domain Name (IDN) are now properly redirected.
* Various security fixes.
* Tab Groups (Panorama) feature removed.
* Ability to filter snapshot output in memory tool.
* Fine-tuning animations by changing the playback rate of animations in the animation-inspector's timeline.
* DOMContentLoaded and load events shown in the network monitor timeline.
* Added Negative url filtering for the network monitor.
* Support for diffing heap snapshots added to the memory tool.
* Inspector search now matches results from all content in the page, including subframes.
* List of animated properties and keyframes is now displayed when clicking on an animation in the animation-inspector’s timeline.
* Push API support, part of Progressive Web Applications.
* Support for delivery of a Content Security Policy (CSP) via a meta tag.
* Web Speech synthesis API.
* ES6 Classes.
|-

| style="background:Salmon" | 45.0.1
| ''Firefox 45.0.1''
| March 16, 2016
| ''Off-cycle stability update.''<ref name="Firefox 45.0.1">{{cite web |url=https://www.mozilla.org/en-US/firefox/45.0.1/releasenotes/ |title=Firefox — Notes (45.0.1) — Mozilla |publisher=mozilla.org |date=March 16, 2016 |accessdate=March 21, 2016}}</ref>
|-

| style="background:Salmon" | 45.0.2
| ''Firefox 45.0.2''
| April 11, 2016
| ''Off-cycle stability update.''<ref name="Firefox 45.0.2">{{cite web |url=https://www.mozilla.org/en-US/firefox/45.0.2/releasenotes/ |title=Firefox — Notes (45.0.2) — Mozilla |publisher=mozilla.org |date=April 11, 2016 |accessdate=April 11, 2016}}</ref>
* Last release for Android 3.0
''on April 26, 2016''.
|-

| style="background:Salmon" | 45.0esr
| ''Firefox 45.0esr''
| March 8, 2016
| Official Firefox 45.0 Extended Support Release (ESR).
|-

| style="background:Salmon" | 45.0.1esr
| ''Firefox 45.0.1esr''
| March 16, 2016
| ''Off-cycle stability update.''<ref name="Firefox 45.0.1" />
* Fix for a potential performance regression (YouTube for example).
* Fix for a regression causing search engine settings to be lost in some context.
* Brings back non-standard jar: URIs to fix a regression in IBM iNotes.
* Fixed an issue in which <code>XSLTProcessor.importStylesheet</code> was failing when <code><import></code> was used.
* Fix for an issue which could cause the list of search provider to be empty.
* Fix for a regression when using the location bar.
* Fix for some loading issues when ''Accept third-party cookies'': was set to ''Never''.
* Disabled Graphite font shaping library.
|-

| style="background:Salmon" | 45.0.2esr
| ''Firefox 45.0.2esr''
| April 11, 2016
| ''Off-cycle stability update.''<ref name="Firefox 45.0.2" />
* Fix for an issue impacting the cookie header when third-party cookies are blocked.
* Fix for a web compatibility regression impacting the ''srcset'' attribute of the ''image'' tag.
* Fix for a crash impacting the video playback with Media Source Extension.
* Fix for a regression impacting some specific uploads.
;Desktop
* Fix for a regression with the copy and paste with some old versions of some Gecko applications like Thunderbird.
|-

| style="background:Salmon" | 45.1.0esr
| ''Firefox 45.1.0esr''
| April 26, 2016
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.1.0/releasenotes/ |title=Firefox — Notes (45.1.0) — Mozilla |publisher=mozilla.org |date=April 26, 2016 |accessdate=April 26, 2016}}</ref>
|-

| style="background:Salmon" | 45.1.1esr
| ''Firefox 45.1.1esr''
| May 3, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.1.1/releasenotes/ |title=Firefox — Notes (45.1.1) — Mozilla |publisher=mozilla.org |date=May 3, 2016 |accessdate=May 11, 2016}}</ref>
* Fixed a build issue when jit is disabled.
* Fixed add-on signing certificate expiration.
* Fixed a graphics-related shutdown crash.
|-

| style="background:Salmon" id="Firefox 45.2 ESR" | 45.2.0esr
| ''Firefox 45.2.0esr''
| June 7, 2016
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.2.0/releasenotes/ |title=Firefox — Notes (45.2.0) — Mozilla |publisher=mozilla.org |date=June 7, 2016 |accessdate=June 7, 2016}}</ref>
* Fixed graphics-related crashes.
* Fixed unicode support for AutoConfig API.
* Web compatibility fix for addEventListener API.
|-

| style="background:Salmon" id="Firefox 45.3 ESR" | 45.3.0esr
| ''Firefox 45.3.0esr''
| August 2, 2016
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.3.0/releasenotes/ |title=Firefox — Notes (45.3.0) — Mozilla |publisher=mozilla.org |date=August 2, 2016 |accessdate=August 2, 2016}}</ref>
|-

| style="background:Salmon" id="Firefox 45.4 ESR" | 45.4.0esr
| ''Firefox 45.4.0esr''
| September 20, 2016
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.4.0/releasenotes/ |title=Firefox — Notes (45.4.0) — Mozilla |publisher=mozilla.org |date=September 20, 2016 |accessdate=September 20, 2016}}</ref>
|-

| style="background:Salmon" id="Firefox 45.5 ESR" | 45.5.0esr
| ''Firefox 45.5.0esr''
| November 15, 2016
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.5.0/releasenotes/ |title=Firefox — Notes (45.5.0) — Mozilla |publisher=mozilla.org |date=November 15, 2016 |accessdate=November 15, 2016}}</ref>
|-

| style="background:Salmon" id="Firefox 45.5.1 ESR" | 45.5.1esr
| ''Firefox 45.5.1esr''
| November 30, 2016
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.5.1/releasenotes/ |title=Firefox — Notes (45.5.1) — Mozilla |publisher=mozilla.org |date=November 30, 2016 |accessdate=December 1, 2016}}</ref>
|-

| style="background:Salmon" id="Firefox 45.6.0 ESR" | 45.6.0esr
| ''Firefox 45.6.0esr''
| December 13, 2016
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.6.0/releasenotes/ |title=Firefox — Notes (45.6.0 — Mozilla |publisher=mozilla.org |date=December 13, 2016 |accessdate=December 15, 2016}}</ref>
|-

| style="background:Salmon" id="Firefox 45.7.0 ESR" | 45.7.0esr
| ''Firefox 45.7.0esr''
| January 24, 2017
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.7.0/releasenotes/ |title=Firefox — Notes (45.7.0 — Mozilla |publisher=mozilla.org |date=January 24, 2017 |accessdate=January 24, 2017}}</ref>
|-

| style="background:Salmon" id="Firefox 45.8.0 ESR" | 45.8.0esr
| ''Firefox 45.8.0esr''
| March 7, 2017
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.8.0/releasenotes/ |title=Firefox — Notes (45.8.0 — Mozilla |publisher=mozilla.org |date=March 7, 2017 |accessdate=March 7, 2017}}</ref>
|-

| style="background:Salmon" id="Firefox 45.9.0 ESR" | 45.9.0esr
| ''Firefox 45.9.0esr''
| April 19, 2017
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/45.9.0/releasenotes/ |title=Firefox — Notes (45.9.0 — Mozilla |publisher=mozilla.org |date=April 19, 2017 |accessdate=April 19, 2017}}</ref> ''on June 13, 2017''.
|-

| style="vertical-align:top;" rowspan="5" | ''']'''
| style="background:Pink" | 46.0a1
| ''Firefox 46.0 Nightly''
| December 15, 2015
| ''First Firefox 46.0 Nightly build.''
|-

| style="background:Pink" | 46.0a2
| ''Firefox 46.0 Developer Edition''
| January 26, 2016
| ''First Firefox 46.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 46 Beta" | 46.0b1
| ''Firefox 46.0 Beta 1''
| March 8, 2016
| ''First Firefox 46.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/46.0beta/releasenotes/ |title=Firefox — Beta Notes (46.0beta) — Mozilla |publisher=Mozilla |date=2016-03-08 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" id="Firefox 46" | 46.0
| ''Firefox 46.0''
| April 26, 2016
| ''Official Firefox 46.0 release.''
* Improved security of the JavaScript Just In Time (JIT) Compiler
* GTK3 integration (GNU/Linux only)
* Screen reader behavior with blank spaces in Google Docs corrected
* Corrected rendering for scaled SVGs that use a clip and a mask
* WebRTC fixes to improve performance and stability
* Display of dominator trees in Memory tool
* Allocation and garbage collection pause profiling in the performance panel
* Launch of responsive mode from the Style Editor <code>@media</code> sidebar
* Added support for <code>document.elementsFromPoint</code>
* Added HKDF support for Web Crypto API{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 46.0"/>-->
|-

| style="background:Salmon" id="Firefox 46.0.1" | 46.0.1
| ''Firefox 46.0.1''
| May 3, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/46.0.1/releasenotes/ |title=Firefox — Notes (46.0.1) — Mozilla |publisher=mozilla.org |date=May 3, 2016 |accessdate=May 11, 2016}}</ref>
* Fixed add-on signing certificate expiration.
* Fixed service worker update issue.
* Fixed a build issue when jit is disabled.
* Fixed a page loading issue related to antivirus software.
* Searched a plugin issue for various locales.
* Limited Sync registration updates.
''on June 7, 2016''.
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" | 47.0a1
| ''Firefox 47.0 Nightly''
| January 26, 2016
| ''First Firefox 47.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 47 Developer Edition" | 47.0a2
| ''Firefox 47.0 Developer Edition''
| March 8, 2016
| ''First Firefox 47.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 47 Beta" | 47.0b1
| ''Firefox 47.0 Beta 1''
| April 27, 2016
| ''First Firefox 47.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/47.0beta/releasenotes/ |title=Firefox — Beta Notes (47.0beta) — Mozilla |publisher=Mozilla |date=2016-04-27 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" id="Firefox 47" | 47.0
| ''Firefox 47.0''
| June 7, 2016
| ''Official Firefox 47.0 release.''{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 47.0"/>-->{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 47.0 Mobile"/>-->
* Support for Google’s Widevine CDM on Windows and Mac OS X so streaming services like Amazon Video can switch from Silverlight to encrypted HTML5 video.
* Enabled VP9 video codec for users with fast machines
* Embedded ] videos now play with HTML5 video if Flash is not installed.
* Ability to view and search open tabs from your smartphone or another computer in a sidebar
* Allowed no-cache on back/forward navigations for https resources
* Latgalu locale added.
* Various security fixes
* FUEL (Firefox User Extension Library) has been removed. Add-ons relying on it will stop working.
* The <code>browser.sessionstore.restore_on_demand</code> preference has been reset to its default value (true) to avoid e10s performance problems.
* The Firefox click-to-activate plugin whitelist has been removed.
* Web platform changes
* Ability to view, start, and debug registered Service Workers in the Service Workers developer tool
* Ability to simulate Push messages in the Service Workers developer tool
* 'Start' button for service workers in about:debugging to start registered Service Workers
* Changes that can affect add-on compatibility
* Added support for ChaCha20/Poly1305 cipher suites
* Custom user agents supported in Responsive Design Mode
* Smart multi-line input in the Web Console
* cuechange events are now available on TextTrack objects
* WebCrypto: PBKDF2 supports SHA-2 hash algorithms
* WebCrypto: RSA-PSS signature support
;Android
* Last release to support Android 2.3.x (Gingerbread)
|-

| style="background:Salmon" id="Firefox 47.0.1" | 47.0.1
| ''Firefox 47.0.1''
| June 28, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/47.0.1/releasenotes/ |title=Firefox — Notes (47.0.1) — Mozilla |publisher=mozilla.org |date=June 28, 2016 |accessdate=June 29, 2016}}</ref>
* Fixed an issue in which Selenium WebDriver may cause Firefox to crash at startup.
|-

| style="background:Salmon" id="Firefox 47.0.2" | 47.0.2
| ''Firefox 47.0.2''
| November 1, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/47.0.2/releasenotes/ |title=Firefox — Notes (47.0.2) — Mozilla |publisher=mozilla.org |date=November 1, 2016 |accessdate=June 20, 2018}}</ref>
* Detect SSE hardware version.
* Detect Websense to protect users from a startup crash.
''on November 1, 2016''.
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" id="Firefox 48 Nightly" | 48.0a1
| ''Firefox 48.0 Nightly''
| March 8, 2016
| ''First Firefox 48.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 48 Developer Edition" | 48.0a2
| ''Firefox 48.0 Developer Edition''
| April 25, 2016
| ''First Firefox 48.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 48 Beta" | 48.0b1
| ''Firefox 48.0 Beta 1''
| June 8, 2016
| ''First Firefox 48.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/48.0beta/releasenotes/ |title=Firefox — Beta Notes (48.0beta) — Mozilla |publisher=Mozilla |date=2016-06-08 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" id="Firefox 48" | 48.0
| ''Firefox 48.0''
| August 2, 2016
| ''Official Firefox 48.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/48.0/releasenotes/ |title=Firefox — Notes (48.0) — Mozilla |publisher=mozilla.org |date=August 2, 2016 |accessdate=August 17, 2016}}</ref>
* Roar for moar protection against harmful downloads! We've got your back.
* Process separation (e10s) is enabled for some of you. Like it? Let us know and we'll roll it out to more.
* Add-ons that have not been verified and signed by Mozilla will not load.
* GNU/Linux fans: Get better Canvas performance with speedy Skia support. Try saying that three times fast.
* WebRTC embetterments:
** Delay-agnostic AEC enabled.
** Full duplex for GNU/Linux enabled.
** ICE Restart & Update is supported.
** Cloning of MediaStream and MediaStreamTrack is now supported.
* Searching for something already in your bookmarks or open tabs? We added super smart icons to let you know.
* Tab (move buttons) and Shift+F10 (pop-up menus) now behave as they should in Firefox customization mode (Windows only).
* The media parser has been redeveloped using the Rust programming language.
* Heyo, Jabra & Logitech C920 webcam users. Fixed WebRTC bugs causing frequency distortions.
* Improved step debugging on last line of functions.
* After version 48, SSE2 CPU extensions are going to be required on Windows.
* Au revoir to Windows Remote Access Service modem Autodial.
* WebExtensions support is now considered as stable.
* Want to move absolute & fixed positioned elements? Now you can with our geometry editor.
* The memory tool now has a tree map view for your debugging pleasure.
* We're putting the spotlight on the background. Now you can debug WebExtensions background content scripts and background pages.
* Content Security Policy (CSP) is now enforced for WebExtensions.
* Old and busted: Error Console. New hotness: Browser Console for your debugging pleasure.
* Add-on development just got easier because you can reload them from about:debugging — because we're all about debugging.
* This theme is hot, hot, hot! Say hi to the Firebug theme for Developer Tools.
* Expanded network requests from the console panel to view request details in line, so you can see things in context.
* Workers can now use the Web Crypto API.
|-

| style="background:Salmon" id="Firefox 48.0.1" | 48.0.1
| ''Firefox 48.0.1''
| August 18, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/48.0.1/releasenotes/ |title=Firefox — Notes (48.0.1) — Mozilla |publisher=mozilla.org |date=August 18, 2016 |accessdate=August 23, 2016}}</ref>
* Fix for an audio regression impacting some major websites.
* Fix for a top crash in the JavaScript engine.
* Fix for a startup crash issue caused by Websense.
* Fix for a different behavior with e10s / non-e10s on <select> and mouse events.
* Fix for a top crash caused by plugin issues.
* Fix for an unsigned add-ons issue on Windows.
* Fix for a shutdown issue.
* Fix for a crash in WebRTC.
|-

| style="background:Salmon" id="Firefox 48.0.2" | 48.0.2
| ''Firefox 48.0.2''
| August 24, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/48.0.2/releasenotes/ |title=Firefox — Notes (48.0.2) — Mozilla |publisher=mozilla.org |date=August 24, 2016 |accessdate=August 26, 2016}}</ref>
* Fix for a startup crash issue caused by Websense (Windows only).
* Last release for Mac OS X 10.6-10.8.
''on September 20, 2016''.
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" id="Firefox 49 Nightly" | 49.0a1
| ''Firefox 49.0 Nightly''
| April 25, 2016
| ''First Firefox 49.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 49 Developer Edition" | 49.0a2
| ''Firefox 49.0 Developer Edition''
| June 6, 2016
| ''First Firefox 49.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 49 Beta" | 49.0b1
| ''Firefox 49.0 Beta 1''
| August 3, 2016
| ''First Firefox 49.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/49.0beta/releasenotes/ |title=Firefox — Beta Notes (49.0beta) — Mozilla |publisher=Mozilla |date=2016-08-03 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" id="Firefox 49" | 49.0
| ''Firefox 49.0''
| September 20, 2016
| ''Official Firefox 49.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/49.0/releasenotes/ |title=Firefox — Notes (49.0) — Mozilla |publisher=mozilla.org |date=September 20, 2016 |accessdate=September 20, 2016}}</ref>
* Updated Firefox Login Manager to allow HTTPS pages to use saved HTTP logins. It’s one more way Firefox is supporting Let’s Encrypt and helping users transition to a more secure web.
* Added features to Reader Mode that make it easier on the eyes and the ears.
** Controls that allow users to adjust the width and line spacing of text.
** Narrate, which reads the content of a page out loud.
* Improved video performance for users on systems that support SSSE3 without hardware acceleration.
* Added context menu controls to HTML5 audio and video that let users loops files or play files at 1.25x speed.
* Improved performance on OS X systems without hardware acceleration.
* Improved appearance of anti-aliased OS X fonts.
* Improvements in about:memory reports for tracking font memory usage.
* Improved performance on Windows systems without hardware acceleration.
* Fixed an issue that prevented users from updating Firefox for Mac unless they originally installed Firefox. Now, those users as well as any user with administrative credentials can update Firefox.
* Ended Firefox for Mac support for OS X 10.6, 10.7, and 10.8.
* Ended Firefox for Windows support for SSE processors.
* Removed Firefox Hello.
* Re-enabled the default for Graphite2 font shaping.
* Added a Cause column to the Network Monitor to show what caused each network request.
* Introduced web speech synthesis API.
|-

| style="background:Salmon" id="Firefox 49.0.1" | 49.0.1
| ''Firefox 49.0.1''
| September 23, 2016
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/49.0.1/releasenotes/ |title=Firefox — Notes (49.0.1) — Mozilla |publisher=mozilla.org |date=September 23, 2016 |accessdate=September 27, 2016}}</ref>
* Mitigated a startup crash issue caused by Websense (Windows only).
|-

| style="background:Salmon" id="Firefox 49.0.2" | 49.0.2
| ''Firefox 49.0.2''
| October 20, 2016
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/49.0.2/releasenotes/ |title=Firefox — Notes (49.0.2) — Mozilla |publisher=mozilla.org |date=October 20, 2016 |accessdate=October 26, 2016}}</ref>
* Asynchronous rendering of the Flash plugins is now enabled by default. This should improve performance and reduce crashes for sites that use the Flash plugin.
* Changed D3D9 default fallback preference to prevent graphical artifacts.
* Fixed a network issue that prevents some users from seeing the Firefox UI on startup.
* Fixed a web compatibility issue with <code>Array.prototype.values</code>
* Fixed a web compatibility issue with file uploads.
* Diagnostic information on timing for tab switching.
* Fix for a Canvas filters graphics issue affecting HTML5 apps.
''on November 15, 2016''.
|}

====Versions 50 through 59====

Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications.

{{#section:Firefox release history|color table}}

{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-

| style="vertical-align:top;" rowspan="17" | ''']'''
| style="background:Pink" id="Firefox 50 Nightly" | 50.0a1
| ''Firefox 50.0 Nightly''
| June 6, 2016
| ''First Firefox 50.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 50 Developer Edition" | 50.0a2
| ''Firefox 50.0 Developer Edition''
| August 1, 2016
| ''First Firefox 50.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b1
| ''Firefox 50.0 Beta 1''
| September 21, 2016
| ''First Firefox 50.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/50.0beta/releasenotes/ |title=Firefox — Beta Notes (50.0beta) — Mozilla |publisher=Mozilla |date=2016-09-20 |accessdate=2017-06-13}}</ref>
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b2
| ''Firefox 50.0 Beta 2''
| September 27, 2016
| ''Second Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b3
| ''Firefox 50.0 Beta 3''
| September 30, 2016
| ''Third Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b4
| ''Firefox 50.0 Beta 4''
| October 4, 2016
| ''Fourth Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b5
| ''Firefox 50.0 Beta 5''
| October 7, 2016
| ''Fifth Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b6
| ''Firefox 50.0 Beta 6''
| October 11, 2016
| ''Sixth Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b7
| ''Firefox 50.0 Beta 7''
| October 14, 2016
| ''Seventh Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b8
| ''Firefox 50.0 Beta 8''
| October 18, 2016
| ''Eighth Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b9
| ''Firefox 50.0 Beta 9''
| October 21, 2016
| ''Ninth Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b10
| ''Firefox 50.0 Beta 10''
| October 25, 2016
| ''Tenth Firefox 50.0 Beta release.''
|-

| style="background:Pink" id="Firefox 50 Beta" | 50.0b11
| ''Firefox 50.0 Beta 11''
| October 28, 2016
| ''Eleventh Firefox 50.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 50" | 50.0
| ''Firefox 50.0''
| November 15, 2016
| Official Firefox 50.0 release.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/50.0/releasenotes/ |title=Firefox — Notes (50.0) — Mozilla |publisher=mozilla.org |date=November 15, 2016 |accessdate=November 15, 2016}}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 50.0 Mobile"/>-->
* Playback video on more sites without plugins with WebM EME Support for Widevine on Windows and Mac.
* Improved performance for SDK extensions or extensions using the SDK module loader.
* Added download protection for a large number of executable file types on Windows, Mac and Linux.
* Increased availability of WebGL to more than 98 percent of users on Windows 7 and newer.
* Added Guarani (gn) locale.
* Added option to Find in page that allows users to limit search to whole words only.
* Updates to keyboard shortcuts.
** Set for a preference to have Ctrl+Tab cycle through tabs in recently used order.
** View for a page in Reader Mode by using Ctrl+Alt+R (Command+Alt+R on Mac).
* Various security fixes.
* Blocked versions of libavcodec older than 54.35.1.
* Added a built-in Emoji set for operating systems without native Emoji fonts (Windows 8.0 and lower and Linux).
* Changes for web developers.
;Android
* Added support for ] via player overlay.
* Simplified the user interface by combining the Recent Tabs and History panels.
|-

| style="background:Salmon" id="Firefox 50.0.1" | 50.0.1
| ''Firefox 50.0.1''
| November 28, 2016
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/50.0.1/releasenotes/ |title=Firefox — Notes (50.0.1) — Mozilla |publisher=mozilla.org |date=November 28, 2016 |accessdate=November 29, 2016}}</ref>
* Fixed an issue where Firefox crashes with 3rd party Chinese IME when using IME text.
|-

| style="background:Salmon" id="Firefox 50.0.2" | 50.0.2
| ''Firefox 50.0.2''
| November 30, 2016
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/50.0.2/releasenotes/ |title=Firefox — Notes (50.0.2) — Mozilla |publisher=mozilla.org |date=November 30, 2016 |accessdate=December 1, 2016}}</ref>
|-

| style="background:Salmon" id="Firefox 50.1.0" | 50.1.0
| ''Firefox 50.1.0''
| December 13, 2016
| ''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/50.1.0/releasenotes/ |title=Firefox — Notes (50.1.0) — Mozilla |publisher=mozilla.org |date=December 13, 2016 |accessdate=December 15, 2016}}</ref> ''on January 24, 2017''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:Pink" id="Firefox 51 Nightly" | 51.0a1
| ''Firefox 51.0 Nightly''
| August 1, 2016
| ''First Firefox 51.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 51 Developer Edition" | 51.0a2
| ''Firefox 51.0 Developer Edition''
| September 19, 2016
| ''First Firefox 51.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 51 Beta" | 51.0b1
| ''Firefox 51.0 Beta 1''
| November 16, 2016
| ''First Firefox 51.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/51.0beta/releasenotes/ |title=Firefox — Beta Notes (51.0beta) — Mozilla |publisher=Mozilla |date=2016-11-16 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" id="Firefox 51" | 51.0
| ''Firefox 51.0''
| January 24, 2017
| ''Official Firefox 51.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/51.0/releasenotes/ |title=Firefox — Notes (51.0) — Mozilla |publisher=mozilla.org |date=January 24, 2017 |accessdate=January 24, 2017}}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="Firefox 51.0 Mobile"/>-->
* Added support for FLAC (Free Lossless Audio Codec) playback.
* Improved reliability of browser data sync.
* An even faster E10s! Tab Switching is better!
* Added Georgian (ka) and Kabyle (kab) locales.
* A warning is displayed when a login page does not have a secure connection.
* Added support for WebGL 2, with advanced graphics rendering features like transform feedback, improved texturing capabilities, and a new sophisticated shading language.
* Firefox will save passwords even in forms that do not have “submit” events.
* Improved video performance for users without GPU acceleration for less CPU usage and a better full screen experience.
* Added a zoom button in the URL bar:
** Displays percent above or below 100 percent when a user has changed the page zoom setting from the default.
** Lets users return to the default setting by clicking on the button.
* Users can view passwords in the save password prompt before saving them.
* Removed Belarusian (be) locale.
* Various security fixes.
* Updated to NSS 3.28.1.
* Re-enabled E10s support for Russian (ru) locale.
* Use of 2D graphics library (Skia) for content rendering on Linux.
;Android
* Added Nepali (ne-NP), Bulgarian (bg) and Kabyle (kab) locales.
|-

| style="background:Salmon" id="Firefox 51.0.1" | 51.0.1
| ''Firefox 51.0.1''
| January 26, 2017
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/51.0.1/releasenotes/ |title=Firefox — Notes (51.0.1) — Mozilla |publisher=mozilla.org |date=January 26, 2017 |accessdate=January 27, 2017}}</ref>
* Fixed an issue in which multiprocess incompatibility did not correctly register with some add-ons.
* Fixed an issue in which geolocation was not working on Windows.
|-

| style="background:Salmon" id="Firefox 51.0.2" | 51.0.2
| ''Firefox 51.0.2''
| February 6, 2017
| '''Android'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/51.0.2/releasenotes/ |title=Firefox for Android — Notes (51.0.2) — Mozilla |publisher=mozilla.org |date=February 6, 2017 |accessdate=March 7, 2017}}</ref>
* Fix for a crash caused by an Android library (Palette) on some x86 devices.
|-

| style="background:Salmon" id="Firefox 51.0.3" | 51.0.3
| ''Firefox 51.0.3''
| February 9, 2017
| '''Android'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/51.0.3/releasenotes/ |title=Firefox for Android — Notes (51.0.3) — Mozilla |publisher=mozilla.org |date=February 9, 2017 |accessdate=March 7, 2017}}</ref>
* Fix for a build issue which was causing some crashes on some x86 architectures.
''on March 7, 2017''.
|-

| rowspan="30" style="vertical-align:top;" | ''']'''
| style="background:Pink" id="Firefox 52 Nightly" | 52.0a1
| ''Firefox 52.0 Nightly''
| September 19, 2016
| ''First Firefox 52.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 52 Developer Edition" | 52.0a2
| ''Firefox 52.0 Developer Edition''
| November 14, 2016
| ''First Firefox 52.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 52 Beta" | 52.0b1
| ''Firefox 52.0 Beta 1''
| January 23, 2017
| ''First Firefox 52.0 Beta release.''
|-

| style="background:Pink" id="Firefox 52 Beta 2" | 52.0b2
| ''Firefox 52.0 Beta 2''
| January 25, 2017
| ''Second Firefox 52.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/52.0beta/releasenotes/ |title=Firefox — Beta Notes (52.0beta) — Mozilla |publisher=Mozilla |date=2017-01-25 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" id="Firefox 52" | 52.0
| ''Firefox 52.0''
| March 7, 2017
| ''Official Firefox 52.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.0/releasenotes/ |title=Firefox — Notes (52.0) — Mozilla |publisher=Mozilla.org |date=March 7, 2017 |accessdate=March 7, 2017}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/52.0/releasenotes/ |title=Firefox for Android — Notes (52.0) — Mozilla |publisher=Mozilla.org |date=March 7, 2017 |accessdate=March 7, 2017}}</ref>
* First release to implement ].
* Added support for WebAssembly, an emerging standard that brings near-native performance to Web-based games, apps, and software libraries without the use of plugins.
* Added automatic captive portal detection, for easier access to Wi-Fi hotspots. When accessing the Internet via a captive portal, Firefox will alert users and open the portal login page in a new tab.
* Enabled multi-process Firefox for Windows users with touch screens
* Added user warnings for non-secure HTTP pages with logins. Firefox now displays a “This connection is not secure” message when users click into the username and password fields on pages that don’t use HTTPS.
* Implemented the Strict Secure Cookies specification which forbids insecure HTTP sites from setting cookies with the "secure" attribute. In some cases, this will prevent an insecure site from setting a cookie with the same name as an existing "secure" cookie from the same base domain.
* Enhanced Sync to allow users to send and open tabs from one device to another.
* Improved text input for third-party keyboard layouts on Windows. This will address some keyboard layouts that:
** have chained dead keys.
** input two or more characters with a non-printable key or a dead key sequence.
** input a character even when a dead key sequence failed to compose a character.
* Removed support for Netscape Plugin API (NPAPI) plugins other than Flash. Silverlight, Java, Acrobat and the like are no longer supported.
* Removed Battery Status API to reduce fingerprinting of users by trackers.
* Improved experience for downloads:
** Notification in the toolbar when a download fails.
** Quick access to five most recent downloads rather than three.
** Larger buttons for canceling and restarting downloads.
* Displaying (but allowing users to override) an “Untrusted Connection” error when encountering SHA-1 certificates that chain up to a root certificate included in Mozilla’s CA Certificate Program. (Note: Firefox continues to permit SHA-1 certificates that chain to manually imported root certificates.)
* Migrated Firefox users on Windows XP and Windows Vista operating systems to the extended support release (ESR) version of Firefox.
* When not using Direct2D on Windows, Skia is used for content rendering.
* Enabled CSS Grid Layout, opening up a world of new possibilities for graphic design.
* Redesigned Responsive Design Mode to include device selection, network throttling, and more.
* Improved security for screen sharing, which now shows a preview and no longer requires a whitelisted domain.
;Android
* Reduced APK file size by more than 5 MB for faster download and installation.
* Display of media controls to pause or resume playback on the Android notification bar. This gives users easy access to controls and allows them to see when audio or video is playing (and consuming mobile data) on Firefox.
|-

| style="background:Salmon" id="Firefox 52.0.1" | 52.0.1
| ''Firefox 52.0.1''
| March 17, 2017
| ''Off-cycle security update.''<ref name="Firefox 52.0.1">{{cite web |url=https://www.mozilla.org/en-US/firefox/52.0.1/releasenotes/ |title=Firefox — Notes (52.0.1) — Mozilla |publisher=mozilla.org |date=March 17, 2017 |accessdate=March 20, 2017}}</ref>
* Various security fixes.
|-

| style="background:Salmon" id="Firefox 52.0.2" | 52.0.2
| ''Firefox 52.0.2''
| March 28, 2017
| ''Off-cycle stability update.''<ref name="Firefox 52.0.2">{{cite web |url=https://www.mozilla.org/en-US/firefox/52.0.2/releasenotes/ |title=Firefox — Notes (52.0.2) — Mozilla |publisher=mozilla.org |date=March 28, 2017 |accessdate=March 28, 2017}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/52.0.2/releasenotes/ |title=Firefox for Android — Notes (52.0.2) — Mozilla |publisher=Mozilla.org |date=March 28, 2017 |accessdate=March 30, 2017}}</ref>
* Fixed use of Nirmala UI as fallback font for additional Indic languages.
* Fix for loading tab icons on session restore.
* Fix for a crash on startup on Linux.
* Fix for new installs erroneously not prompting to change the default browser setting.
;Android
* Disabled presentation API to avoid page loading delays.
* Display of end-of-life message on non-NEON devices.
''on April 19, 2017''.
|-

| style="background:Salmon" id="Firefox 52.0 ESR"| 52.0esr
| ''Firefox 52.0esr''
| March 7, 2017
| ''Official Firefox 52.0 Extended Support Release (ESR).''
|-

| style="background:Salmon" id="Firefox 52.0.1 ESR"| 52.0.1esr
| ''Firefox 52.0.1esr''
| March 17, 2017
| ''Off-cycle security update.''<ref name="Firefox 52.0.1"/>
|-

| style="background:Salmon" id="Firefox 52.0.2 ESR"| 52.0.2esr
| ''Firefox 52.0.2esr''
| March 28, 2017
| ''Off-cycle stability update.''<ref name="Firefox 52.0.2"/>
|-

| style="background:Salmon" id="Firefox 52.1.0 ESR"| 52.1.0esr
| ''Firefox 52.1.0esr''
| April 19, 2017
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.1.0/releasenotes/ |title=Firefox — Notes (52.1.0) — Mozilla |publisher=mozilla.org |date=April 19, 2017 |accessdate=April 19, 2017}}</ref>
* Various security, stability, and regression fixes.
|-

| style="background:Salmon" id="Firefox 52.1.1 ESR"| 52.1.1esr
| ''Firefox 52.1.1esr''
| May 5, 2017
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.1.1/releasenotes/ |title=Firefox — Notes (52.1.1) — Mozilla |publisher=mozilla.org |date=May 5, 2017 |accessdate=May 6, 2017}}</ref>
* Various security fixes.
|-

| style="background:Salmon" id="Firefox 52.1.2 ESR"| 52.1.2esr
| ''Firefox 52.1.2esr''
| May 19, 2017
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.1.2/releasenotes/ |title=Firefox — Notes (52.1.2) — Mozilla |publisher=mozilla.org |date=May 19, 2017 |accessdate=May 20, 2017}}</ref>
* Fixed hangs when using a proxy with NTLM authentication.
|-

| style="background:Salmon" id="Firefox 52.2.0 ESR"| 52.2.0esr
| ''Firefox 52.2.0esr''
| June 13, 2017
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.2.0/releasenotes/ |title=Firefox — Notes (52.2.0) — Mozilla |publisher=mozilla.org |date=June 13, 2017 |accessdate=June 13, 2017}}</ref>
* Various security fixes
* Improved file type recognition on Windows
|-

| style="background:Salmon" id="Firefox 52.2.1 ESR"| 52.2.1esr
| ''Firefox 52.2.1esr''
| June 29, 2017
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.2.1/releasenotes/ |title=Firefox — Notes (52.2.1) — Mozilla |publisher=mozilla.org |date=June 29, 2017 |accessdate=July 1, 2017}}</ref>
* Fixed an issue in which printing text does not work on Windows when Direct2D is disabled
|-

| style="background:Salmon" id="Firefox 52.3.0 ESR"| 52.3.0esr
| ''Firefox 52.3.0esr''
| August 8, 2017
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.3.0/releasenotes/ |title=Firefox — Notes (52.3.0) — Mozilla |publisher=mozilla.org |date=August 8, 2017 |accessdate=August 8, 2017}}</ref>
* Various security fixes
* Various stability and regression fixes
|-

| style="background:Salmon" id="Firefox 52.4.0 ESR"| 52.4.0esr
| ''Firefox 52.4.0esr''
| September 28, 2017
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.4.0/releasenotes/ |title=Firefox — Notes (52.4.0) — Mozilla |publisher=mozilla.org |date=September 28, 2017 |accessdate=September 28, 2017}}</ref>
* Various security fixes
* Various stability and regression fixes
|-

| style="background:Salmon" id="Firefox 52.4.1 ESR"| 52.4.1esr
| ''Firefox 52.4.1esr''
| October 9, 2017
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.4.1/releasenotes/ |title=Firefox — Notes (52.4.1) — Mozilla |publisher=mozilla.org |date=October 9, 2017 |accessdate=October 10, 2017}}</ref>
* Fixed a crash when using the color picker on macOS 10.13
* Fixed a crash when playing videos on macOS 10.13
|-

| style="background:Salmon" id="Firefox 52.5.0 ESR"| 52.5.0esr
| ''Firefox 52.5.0esr''
| November 14, 2017
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.5.0/releasenotes/ |title=Firefox — Notes (52.5.0) — Mozilla |publisher=mozilla.org |date=November 14, 2017 |accessdate=November 14, 2017}}</ref>
* Various security fixes
* Various stability and regression fixes
|-

| style="background:Salmon" id="Firefox 52.5.2 ESR"| 52.5.2esr
| ''Firefox 52.5.2esr''
| December 7, 2017
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.5.2/releasenotes/ |title=Firefox — Notes (52.5.2) — Mozilla |publisher=mozilla.org |date=December 7, 2017 |accessdate=December 11, 2017}}</ref>
* Various security fixes
|-

| style="background:Salmon" id="Firefox 52.5.3 ESR"| 52.5.3esr
| ''Firefox 52.5.3esr''
| December 28, 2017
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.5.3/releasenotes/ |title=Firefox — Notes (52.5.3) — Mozilla |publisher=mozilla.org |date=December 28, 2017 |accessdate=January 1, 2018}}</ref>
* Fix for a crash reporting issue that inadvertently sends background tab crash reports to Mozilla without user opt-in
|-

| style="background:Salmon" id="Firefox 52.6.0 ESR"| 52.6.0esr
| ''Firefox 52.6.0esr''
| January 23, 2018
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.6.0/releasenotes/ |title=Firefox — Notes (52.6.0) — Mozilla |publisher=mozilla.org |date=January 23, 2018 |accessdate=January 23, 2018}}</ref>
* Various stability and regression fixes
* Various security fixes
|-

| style="background:Salmon" id="Firefox 52.7.0 ESR"| 52.7.0esr
| ''Firefox 52.7.0esr''
| March 13, 2018
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.7.0/releasenotes/ |title=Firefox — Notes (52.7.0) — Mozilla |publisher=mozilla.org |date=March 13, 2018 |accessdate=March 13, 2018}}</ref>
* Various stability and regression fixes
* Various security fixes
|-

| style="background:Salmon" id="Firefox 52.7.1 ESR"| 52.7.1esr
| ''Firefox 52.7.1esr''
| March 14, 2018
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.7.1/releasenotes/ |title=Firefox — Notes (52.7.1) — Mozilla |publisher=mozilla.org |date=March 14, 2018 |accessdate=March 16, 2018}}</ref>
* Fixed an issue in which the search is broken for Italian "it" locale in Firefox ESR 52.7.0
|-

| style="background:Salmon" id="Firefox 52.7.2 ESR"| 52.7.2esr
| ''Firefox 52.7.2esr''
| March 16, 2018
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.7.2/releasenotes/ |title=Firefox — Notes (52.7.2) — Mozilla |publisher=mozilla.org |date=March 16, 2018 |accessdate=March 16, 2018}}</ref>
* Various security fixes
|-

| style="background:Salmon" id="Firefox 52.7.3 ESR"| 52.7.3esr
| ''Firefox 52.7.3esr''
| March 26, 2018
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.7.3/releasenotes/ |title=Firefox — Notes (52.7.3) — Mozilla |publisher=mozilla.org |date=March 26, 2018 |accessdate=March 31, 2018}}</ref>
* Various security fixes
|-

| style="background:Salmon" id="Firefox 52.7.4 ESR"| 52.7.4esr
| ''Firefox 52.7.4esr''
| April 30, 2018
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.7.4/releasenotes/ |title=Firefox — Notes (52.7.4) — Mozilla |publisher=mozilla.org |date=April 30, 2018 |accessdate=May 7, 2018}}</ref>
* Fix for compatibility with Windows 10 April 2018 update.
|-

| style="background:Salmon" id="Firefox 52.8.0 ESR"| 52.8.0esr
| ''Firefox 52.8.0esr''
| May 9, 2018
| ''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.8.0/releasenotes/ |title=Firefox — Notes (52.8.0) — Mozilla |publisher=mozilla.org |date=May 9, 2018 |accessdate=May 9, 2018}}</ref>
* Various stability and regression fixes
* Performance improvements to the Safe Browsing service to avoid slowdowns while updating site classification data
|-

| style="background:Salmon" id="Firefox 52.8.1 ESR"| 52.8.1esr
|''Firefox 52.8.1esr''
|June 6, 2018
|''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.8.1/releasenotes/ |title=Firefox — Notes (52.8.1) — Mozilla |publisher=mozilla.org |date=June 6, 2018 |accessdate=June 26, 2018}}</ref>
* Various security fixes
|-

| style="background:Salmon" id="Firefox 52.9.0 ESR"| 52.9.0esr
|''Firefox 52.9.0esr''
|June 26, 2018
|''Regular security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/52.9.0/releasenotes/ |title=Firefox — Notes (52.9.0) — Mozilla |publisher=mozilla.org |date=June 26, 2018 |accessdate=June 26, 2018}}</ref>
* Various security fixes
* Last release for Windows XP and Windows Vista.
* Last release for 32-bit Mac OS X.
] ''on September 5, 2018''.
|-

| style="vertical-align:top;" rowspan="8" | ''']'''
| style="background:Pink" id="Firefox 53 Nightly" | 53.0a1
| ''Firefox 53.0 Nightly''
| November 14, 2016
| ''First Firefox 53.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 53 Developer Edition" | 53.0a2
| ''Firefox 53.0 Developer Edition''
| January 23, 2017
| ''First Firefox 53.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 53 Developer Edition 2" | 53.0a3
| ''Firefox 53.0 Developer Edition''
| January 27, 2017
| ''Second Firefox 53.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 53 Beta" | 53.0b1
| ''Firefox 53.0 Beta 1''
| March 7, 2017
| ''First Firefox 53.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/53.0beta/releasenotes/ |title=Firefox — Beta Notes (53.0beta) — Mozilla |publisher=Mozilla |date=2017-03-07 |accessdate=2017-06-13}}</ref>
|-

| style="background:Salmon" id="Firefox 53" | 53.0
| ''Firefox 53.0''
| April 19, 2017
| ''Official Firefox 53.0 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/53.0/releasenotes/ |title=Firefox — Notes (53.0) — Mozilla |publisher=mozilla.org |date=April 27, 2017 |accessdate=June 7, 2017}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/53.0/releasenotes/ |title=Firefox for Android — Notes (53.0) — Mozilla |publisher=Mozilla.org |date=April 19, 2017 |accessdate=June 13, 2017}}</ref>
* Improved graphics stability for Windows users with the addition of compositor process separation (Quantum Compositor).
* Two new 'compact' themes available in Firefox, dark and light, based on the Firefox Developer Edition theme.
* Lightweight themes are now applied in private browsing windows.
* Reader Mode now displays estimated reading time for the page.
* Windows 7+ users on 64-bit OS can select 32-bit or 64-bit versions in the stub installer.
* Various security fixes.
* Updated the design of site permission requests to make them harder to miss and easier to understand.
* Windows XP and Vista are no longer supported. XP and Vista users running Firefox 52 will continue to receive security updates on Firefox ESR 52.
* 32-bit Mac OS X is no longer supported. 32-bit Mac OS X users can switch to Firefox ESR 52 to continue receiving security updates..
* Updates for Mac OS X are smaller in size compared to updates for Firefox 52.
* The last few characters of shortened tab titles fade out instead of being replaced by ellipses to keep more of the title visible.
* Ended Firefox Linux support for processors older than Pentium 4 and AMD Opteron
* New visual design for audio and video controls.
* Support for WebM video with alpha, which allows playing videos with transparent backgrounds.
* Changes for web developers.
;Android
* Right to Left Language Support – Arabic (ar), Urdu (ur), Hebrew (he) and Persian (fa)
* Users can enable two columns tabs setting in portrait mode.
* Long press on a search suggestion removes it from browser history.
|-

| style="background:Salmon" id="Firefox 53.0.1" | 53.0.1
| ''Firefox 53.0.1''
| April 27, 2017
| '''Android'''
''Off-cycle stability update.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/android/53.0.1/releasenotes/ |title=Firefox for Android — Notes (53.0.1) — Mozilla |publisher=mozilla.org |date=April 27, 2017 |accessdate=June 7, 2017}}</ref>
* Fixed a rare condition that could prevent opening restored tabs.
* Fix for accessibility issue with TalkBack.
* Fix for a crash with the Bluhell Firewall add-on.
|-

| style="background:Salmon" id="Firefox 53.0.2" | 53.0.2
| ''Firefox 53.0.2''
| May 5, 2017
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/53.0.2/releasenotes/ |title=Firefox — Notes (53.0.2) — Mozilla |publisher=mozilla.org |date=May 5, 2017 |accessdate=June 7, 2017}}</ref>
* Made form validation errors and date picker panel visible to the user
* Various security fixes
* The non-standard showDialog argument to <code>window.find</code> is now ignored.
* Fix for issues with Android integration.
* Right-to-left locales will now display the search bar correctly.
* Prevented video corruption on affected devices.
|-

| style="background:Salmon" id="Firefox 53.0.3" | 53.0.3
| ''Firefox 53.0.3''
| May 19, 2017
| '''Desktop'''
''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/53.0.3/releasenotes/ |title=Firefox — Notes (53.0.3) — Mozilla |publisher=mozilla.org |date=May 19, 2017 |accessdate=June 7, 2017}}</ref>
* Fixed hangs when using a proxy with NTLM authentication.
* Fixed excessive resource usage from the captive portal detection service.
* Bumped preloaded security information expiration times.
''on June 13, 2017''.
|-

| style="vertical-align:top;" rowspan="21" | ''']'''
| style="background:Pink" id="Firefox 54 Nightly" | 54.0a1
| ''Firefox 54.0 Nightly''
| January 23, 2017
| ''First Firefox 54.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 54 Developer Edition" | 54.0a2
| ''Firefox 54.0 Developer Edition''
| March 6, 2017
|''First Firefox 54.0 Developer Edition build.''
This is the last build that based on "Aurora" build.
|-

| style="background:Pink" id="Firefox 54 Developer Edition 2" | 54.0b11
| ''Firefox 54.0 Developer Edition''
| May 26, 2017
|''Second Firefox 54.0 Developer Edition build.''
Starting in this version Firefox Developer Edition will be based on the "Beta" build.
|-

| style="background:Pink" id="Firefox 54 Developer Edition 2" | 54.0b12
| ''Firefox 54.0 Developer Edition''
| May 29, 2017
|''Third Firefox 54.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 54 Developer Edition 2" | 54.0b13
| ''Firefox 54.0 Developer Edition''
| June 2, 2017
|''Fourth Firefox 54.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 54 Developer Edition 2" | 54.0b14
| ''Firefox 54.0 Developer Edition''
| June 6, 2017
|''Fifth Firefox 54.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b1
| ''Firefox 54.0 Beta 1''
| April 20, 2017
| ''First Firefox 54.0 Beta release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/54.0beta/releasenotes/ |title=Firefox — Beta Notes (54.0beta) — Mozilla |publisher=Mozilla |date=2017-04-21 |accessdate=2017-06-13}}</ref>
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b2
| ''Firefox 54.0 Beta 2''
| April 25, 2017
| ''Second Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b3
| ''Firefox 54.0 Beta 3''
| April 28, 2017
| ''Third Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b4
| ''Firefox 54.0 Beta 4''
| May 2, 2017
| ''Fourth Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b5
| ''Firefox 54.0 Beta 5''
| May 5, 2017
| ''Fifth Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b6
| ''Firefox 54.0 Beta 6''
| May 9, 2017
| ''Sixth Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b7
| ''Firefox 54.0 Beta 7''
| May 12, 2017
| ''Seventh Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b8
| ''Firefox 54.0 Beta 8''
| May 16, 2017
| ''Eighth Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b9
| ''Firefox 54.0 Beta 9''
| May 19, 2017
| ''Ninth Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b10
| ''Firefox 54.0 Beta 10''
| May 23, 2017
| ''Tenth Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b11
| ''Firefox 54.0 Beta 11''
| May 26, 2017
| ''Eleventh Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b12
| ''Firefox 54.0 Beta 12''
| May 29, 2017
| ''Twelfth Firefox 54.0 Beta release.''
|-

| style="background:Pink" id="Firefox 54 Beta" | 54.0b13
| ''Firefox 54.0 Beta 13''
| June 2, 2017
| ''Thirteenth Firefox 54.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 54" | 54.0
| ''Firefox 54.0''
| June 13, 2017
|''Official Firefox 54.0 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/54.0/releasenotes/ |title=Firefox — Notes (54.0) — Mozilla |publisher=Mozilla |date=2017-06-13 |accessdate=2017-06-13}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/54.0/releasenotes/ |title=Firefox for Android — Notes (54.0) — Mozilla |publisher=Mozilla.org |date=June 13, 2017 |accessdate=June 13, 2017}}</ref>
* Simplified the download button and download status panel.
* Added support for multiple content processes (e10s-multi).
* Added Burmese (my) locale.
* Moved the mobile bookmarks folder to the main bookmarks menu for easier access.
* Added ability to create and save custom devices in Responsive Design Mode.
* Additional changes for web developers.
;Android
* Added Bulgarian (bg) and Kabyle (kab) locales.
* Fixed formatting for right-to-left languages, including formatting of preference names in <code>about:config</code>.
* Improved audio and video playback in the browser.
* Improved bookmarks sync performance.
|-

| style="background:Salmon" id="Firefox 54.0.1" | 54.0.1
| ''Firefox 54.0.1''
| June 29, 2017
|''Off-cycle stability update.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/54.0.1/releasenotes/ |title=Firefox — Notes (54.0.1) — Mozilla |publisher=Mozilla |date=2017-06-29 |accessdate=2017-07-01}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/54.0.1/releasenotes/ |title=Firefox for Android — Notes (54.0.1) — Mozilla |publisher=Mozilla.org |date=June 29, 2017 |accessdate=July 1, 2017}}</ref>
* Fix for a display issue of tab title
* Fix for a display issue of opening new tab
* Fix for a display issue when opening multiple tabs
* Fix for a tab display issue when downloading files
* Fix for a PDF printing issue
* Fix for a Netflix issue on Linux
;Android
* Fix for an inconsistent locale display issue
* Fix for a crash in tabs tray menu
* Fix for issues with navigation
''on August 8, 2017.''
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:Pink" id="Firefox 55 Nightly" | 55.0a1
| ''Firefox 55.0 Nightly''
| March 6, 2017
| ''First Firefox 55.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 55 Developer Edition" | 55.0b1
| ''Firefox 55.0 Developer Edition''
| June 14, 2017
| ''First Firefox 55.0 Developer Edition build.''<ref name="Firefox 55.0beta Release Notes" />
|-

| style="background:Pink" id="Firefox 55 Beta" | 55.0b1
| ''Firefox 55.0 Beta 1''
| June 14, 2017
| ''First Firefox 55.0 Beta release.''<ref name="Firefox 55.0beta Release Notes">{{cite web|url=https://www.mozilla.org/en-US/firefox/55.0beta/releasenotes/ |title=Firefox — Beta Notes (55.0beta) — Mozilla |publisher=Mozilla |date=2017-06-14 |accessdate=2017-06-15}}</ref>
|-

| style="background:Salmon" id="Firefox 55" | 55.0
| ''Firefox 55.0''
| August 8, 2017
|''Official Firefox 55.0 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/55.0/releasenotes/ |title=Firefox — Notes (55.0) — Mozilla |publisher=Mozilla |date=2017-08-08 |accessdate=2017-08-08}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/55.0/releasenotes/ |title=Firefox for Android — Notes (55.0) — Mozilla |publisher=Mozilla.org |date=August 8, 2017 |accessdate=August 8, 2017}}</ref>
* Launched Windows support for WebVR, bringing immersive experiences to the web.
* Added options that let users optimize recent performance improvements
** Setting to enable Hardware VP9 acceleration on Windows 10 Anniversary Update for better battery life and lower CPU usage while watching videos
** Setting to modify the number of concurrent content processes for faster page loading and more responsive tab switching
* Simplified installation process with a streamlined Windows stub installer
** Firefox for Windows 64-bit is now installed by default on 64-bit systems with at least 2GB of RAM
** Full installers with advanced installation options are still available
* Improved address bar functionality
** Search with any installed one-click search engine directly from the address bar
** Search suggestions appear by default
** When entering a hostname (like pinterest.com) in the URL bar, Firefox resolves to the secure version of the site (<nowiki>https://www.pinterest.com</nowiki>) instead of the insecure version (<nowiki>http://www.pinterest.com</nowiki>) when possible
* Updated Sidebar for bookmarks, history, and synced tabs so it can appear at the right edge of the window as well as the left
* Added support for stereo microphones with WebRTC
* Simplified printing from Reader Mode
* Updated Firefox for OS X and macOS to allow users to assign custom keyboard shortcuts to Firefox menu items via System Preferences
* Browsing sessions with a high number of tabs are now restored in an instant
* Make screenshots of webpages, and save them locally or upload them to the cloud. This feature will undergo A/B testing and will not be visible for some users.
* Added Belarusian (be) locale
* Various security fixes
* Modernized application update UI to be less intrusive and more aligned with the rest of the browser. Only users who have not restarted their browser 8 days after downloading an update or users who opted out of automatic updates will see this change.
* Made the Adobe Flash plugin click-to-activate by default and allowed only on <nowiki>http://</nowiki> and <nowiki>https://</nowiki> URL schemes. (This change will not be visible to all users immediately.)
* Firefox does not support downgrades, even though this may have worked in past versions. Users who install Firefox 55+ and later downgrade to an earlier version may experience issues with Firefox.
* Sites that don’t use SSL can no longer access Geolocation APIs to determine a user’s physical location
* ] supported on linux<ref>{{cite web|url=https://developer.mozilla.org/en-US/Firefox/Headless_mode#Browser_support|title=Headless mode - browser support|work=developer.mozilla.org}}</ref>
;Android
* Added actions to manage tabs. You can now reorder tabs by tapping and holding a tab in the tabs tray (or in the tab strip on tablets).
* Added Greek (el) and Lao (lo) locales
* Various security fixes
* Added option to accessibility settings to respect the system's set font size when displaying web pages
* Video that is not visible will stop rendering to conserve power (audio will still continue)
* Note: Firefox 55 is the last version that supports devices running Android 4.0
|-

| style="background:Salmon" id="Firefox 55.0.1" | 55.0.1
| ''Firefox 55.0.1''
| August 10, 2017
| ''Off-cycle stability update.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/55.0.1/releasenotes/ |title=Firefox — Notes (55.0.1) — Mozilla |publisher=Mozilla |date=2017-08-10 |accessdate=2017-08-11}}</ref>
;Desktop
* Fix for a rendering issue with some PKCS#11 libraries
* Fix for a problem causing ''What's new pages'' not to be displayed
* Fix for a regression in the tab restoration process
* Disabled the predictor prefetch
|-

| style="background:Salmon" id="Firefox 55.0.2" | 55.0.2
| ''Firefox 55.0.2''
| August 16, 2017
| ''Off-cycle stability update.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/55.0.2/releasenotes/ |title=Firefox — Notes (55.0.2) — Mozilla |publisher=Mozilla |date=2017-08-16 |accessdate=2017-08-17}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/55.0.2/releasenotes/ |title=Firefox for Android — Notes (55.0.2) — Mozilla |publisher=Mozilla.org |date=August 16, 2017 |accessdate=August 17, 2017}}</ref>
* Fix for a potential issue when the username had some specific characters in the path
* Fix for an issue with new installation notification for sideload add-ons
* Fix for performance regressions with WebExtension
* Fix for a regression with the popup menu
;Android
* Fix for an issue with tab restoration
* Fix for a crash with Telemetry
* Fixed: Blacklisting of Galaxy S4 SPH-L720 model for the adaptive playback feature
* Disabled the predictor prefetch
* Last release to support Android 4.0.x (Ice Cream Sandwich)
|-

| style="background:Salmon" id="Firefox 55.0.3" | 55.0.3
| ''Firefox 55.0.3''
| August 25, 2017
| ''Off-cycle stability update.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/55.0.3/releasenotes/ |title=Firefox — Notes (55.0.3) — Mozilla |publisher=Mozilla |date=2017-08-25 |accessdate=2017-09-06}}</ref>
;Desktop
* Fixed file uploads to some websites, including YouTube
* Fix for an issue with addons when using a path containing non-ASCII characters
''on September 28, 2017.''
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" id="Firefox 56 Nightly" | 56.0a1
| ''Firefox 56.0 Nightly''
| June 12, 2017
| ''First Firefox 56.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 56 Developer Edition" | 56.0b1
| ''Firefox 56.0 Developer Edition''
| August 8, 2017
| ''First Firefox 56.0 Developer Edition build.''<ref name="Firefox 56.0beta Release Notes" />
|-

| style="background:Pink" id="Firefox 56 Beta" | 56.0b1
| ''Firefox 56.0 Beta 1''
| August 8, 2017
| ''First Firefox 56.0 Beta release.''<ref name="Firefox 56.0beta Release Notes">{{cite web|url=https://www.mozilla.org/en-US/firefox/56.0beta/releasenotes/ |title=Firefox — Beta Notes (56.0beta) — Mozilla |publisher=Mozilla |date=2017-08-08 |accessdate=2017-08-12}}</ref>
|-

| style="background:Salmon" id="Firefox 56" | 56.0
| ''Firefox 56.0''
| September 28, 2017
| ''Official Firefox 56.0 release.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/56.0/releasenotes/ |title=Firefox — Notes (56.0) — Mozilla |publisher=Mozilla |date=2017-09-28 |accessdate=2017-09-28}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/56.0/releasenotes/ |title=Firefox for Android — Notes (55.0) — Mozilla |publisher=Mozilla.org |date=September 28, 2017 |accessdate=September 28, 2017}}</ref>
* Launched Firefox Screenshots, a feature that lets users take, save, and share screenshots without leaving the browser
* Added support for address form autofill (en-US only)
* Updated Preferences
** Added search tool so users can find a specific setting quickly
** Reorganized preferences so users can more easily scan settings
** Rewrote descriptions so users can better understand choices and how they affect browsing
** Revised data collection choices so they align with updated Privacy Notice and data collection strategy
* Media opened in a background tab will not play until the tab is selected
* Improved Send Tabs feature of Sync for iOS and Android, and Send Tabs can be discovered even by users without a Firefox Account
* Replaced character encoding converters with a new Encoding Standard-compliant implementation written in Rust
* Added hardware acceleration for AES-GCM
* Updated the Safe Browsing protocol to version 4
* Reduced update download file size by approximately 20 percent
* Improved security for verifying update downloads
* Added Layout Panel to CSS Grid DevTools
;Android
* Improved support for WebExtensions on Android
* Improved power consumption and performance for WebRTC with the use of hardware encoders
* Added Zapoteco (zam) and Belarusian (be) locales
* Ended support for Flash
* Ended support for devices running Android 4.0
|-

| style="background:Salmon" id="Firefox 56.0.1" | 56.0.1
| ''Firefox 56.0.1''
| October 9, 2017
| ''Off-cycle stability update.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/56.0.1/releasenotes/ |title=Firefox — Notes (56.0.1) — Mozilla |publisher=Mozilla |date=2017-10-09 |accessdate=2017-10-10}}</ref>
;Desktop
* Blocked D3D11 when using Intel drivers on Windows 7 systems with partial AVX support
* Users of 32-bit Firefox on 64-bit Windows are migrated to 64-bit Firefox for increased stability and security
|-

| style="background:Salmon" id="Firefox 56.0.2" | 56.0.2
| ''Firefox 56.0.2''
| October 26, 2017
| ''Off-cycle stability update.''<ref>{{cite web|url=https://www.mozilla.org/en-US/firefox/56.0.2/releasenotes/ |title=Firefox — Notes (56.0.2) — Mozilla |publisher=Mozilla |date=2017-10-26 |accessdate=2017-10-30}}</ref>
;Desktop
* Disabled Form Autofill completely on user request
* Fix for video-related crashes on Windows 7
* Corrected detection for 64-bit GSSAPI authentication
* Fix for shutdown crash
''on November 14, 2017''.
|-

| style="vertical-align:top;" rowspan="31" | ''']'''<ref>{{cite web |url=https://blog.mozilla.org/blog/2017/09/26/firefox-quantum-beta-developer-edition/ |title=Start Your Engines – Firefox Quantum Lands in Beta, Developer Edition|website=The Mozilla Blog|date=26 September 2017 |author=Nick Nguyen |accessdate= 28 September 2017}}</ref>
| style="background:Pink" idr="Firefox 57 Nightly" | 57.0a1
| ''Firefox 57.0 Nightly''
| August 2, 2017
| ''First Firefox 57.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b1
| ''Firefox 57.0 Developer Edition''
| September 20, 2017
| ''First Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b2
| ''Firefox 57.0 Developer Edition''
| September 22, 2017
| ''Second Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b3
| ''Firefox 57.0 Developer Edition''
| September 26, 2017
| ''Third Firefox 57.0 Developer Edition build.''<ref name="Firefox 57.0beta Release Notes" />
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b5
| ''Firefox 57.0 Developer Edition''
| October 3, 2017
| ''Fourth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b6
| ''Firefox 57.0 Developer Edition''
| October 6, 2017
| ''Fifth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b7
| ''Firefox 57.0 Developer Edition''
| October 10, 2017
| ''Sixth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b8
| ''Firefox 57.0 Developer Edition''
| October 13, 2017
| ''Seventh Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b9
| ''Firefox 57.0 Developer Edition''
| October 17, 2017
| ''Eighth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b10
| ''Firefox 57.0 Developer Edition''
| October 20, 2017
| ''Ninth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b11
| ''Firefox 57.0 Developer Edition''
| October 24, 2017
| ''Tenth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b12
| ''Firefox 57.0 Developer Edition''
| October 27, 2017
| ''Eleventh Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b13
| ''Firefox 57.0 Developer Edition''
| October 31, 2017
| ''Twelfth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Developer Edition" | 57.0b14
| ''Firefox 57.0 Developer Edition''
| November 3, 2017
| ''Thirteenth Firefox 57.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b3
| ''Firefox 57.0 Beta 3''
| September 26, 2017
| ''First Firefox 57.0 Beta release.''<ref name="Firefox 57.0beta Release Notes">{{cite web|url=https://www.mozilla.org/en-US/firefox/57.0beta/releasenotes/ |title=Firefox — Beta Notes (57.0beta) — Mozilla |publisher=Mozilla |date=2017-09-26 |accessdate=2017-09-26}}</ref>
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b4
| ''Firefox 57.0 Beta 4''
| September 29, 2017
| ''Second Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b5
| ''Firefox 57.0 Beta 5''
| October 3, 2017
| ''Third Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b6
| ''Firefox 57.0 Beta 6''
| October 6, 2017
| ''Fourth Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b7
| ''Firefox 57.0 Beta 7''
| October 10, 2017
| ''Fifth Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b8
| ''Firefox 57.0 Beta 8''
| October 13, 2017
| ''Sixth Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b9
| ''Firefox 57.0 Beta 9''
| October 17, 2017
| ''Seventh Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b10
| ''Firefox 57.0 Beta 10''
| October 20, 2017
| ''Eighth Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b11
| ''Firefox 57.0 Beta 11''
| October 24, 2017
| ''Ninth Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b12
| ''Firefox 57.0 Beta 12''
| October 27, 2017
| ''Tenth Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b13
| ''Firefox 57.0 Beta 13''
| October 31, 2017
| ''Eleventh Firefox 57.0 Beta release.''
|-

| style="background:Pink" id="Firefox 57 Beta" | 57.0b14
| ''Firefox 57.0 Beta 14''
| November 3, 2017
| ''Twelfth Firefox 57.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 57" | 57.0
| ''Firefox 57.0''
| November 14, 2017
| ''Official Firefox 57.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/57.0/releasenotes/ |title=Firefox — Notes (57.0) — Mozilla |publisher=Mozilla.org |date=November 14, 2017 |accessdate=November 14, 2017}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/57.0/releasenotes/ |title=Firefox for Android — Notes (57.0) — Mozilla |publisher=Mozilla.org |date=November 14, 2017 |accessdate=November 14, 2017}}</ref>
* A completely new browsing engine, designed to take full advantage of the processing power in modern devices
* A redesigned interface with optimizations for touch screens
* A unified address and search bar. New installs will see this unified bar
* A revamped new tab page that includes top visited sites, recently visited pages, and recommendations from Pocket (in the US, Canada, and Germany)
* An updated product tour to orient new and returning Firefox users
* AMD VP9 hardware video decoder support for improved video playback with lower power consumption
* An expanded section in preferences to manage all website permissions
* Various security fixes
* Firefox now exclusively supports extensions built using the WebExtension API, and unsupported legacy extensions will no longer work
* The browser's autoscroll feature, as well as scrolling by keyboard input and touch-dragging of scrollbars, now use asynchronous scrolling. These scrolling methods are now similar to other input methods like mousewheel, and provide a smoother scrolling experience
* The content process now has a stricter security sandbox that blocks filesystem reading and writing on Linux, similar to the protections for Windows and macOS that shipped in Firefox 56
* Middle mouse paste in the content area no longer navigates to URLs by default on Unix systems
* Removed the toolbar Share button
* Some older versions of the ATOK IME, including ATOK 2006, 2008, 2009 and 2010, can cause crashes and are therefore disabled on the Windows 64-bit version of Firefox Quantum
* The default font for Japanese text is now Meiryo
* A complete visual refresh of both the Light and Dark DevTools themes, matching the new visual style of Firefox Quantum
* The Inspector shows the values of CSS variables on hover
* Completely new and re-designed Console panel. Joining the Debugger and the Network Monitor, the Console has been rewritten using modern web technologies such as React and Redux. It now also allows to inspect objects in context.
;Android
* Performance improvements for faster page loading and stability
* Updated interface, including a revamped new tab page that includes top visited sites, recently visited pages, and recommendations from Pocket (in the US, Canada and Germany)
* Video decoding is shut down when the tab playing the media is sent to the background. Video resumes when the tab is brought to the foreground. Audio will not be affected
* Added an option to enable tracking protection outside of private browsing
* Automatically enabled private mode on compatible keyboards during private browsing
* Long URLs in the URL bar are now scrollable
* Added Wolof (wo) locale
* Firefox for Android now exclusively supports extensions built using the WebExtension API, and unsupported legacy extensions will no longer work
* Android Apps can now launch Firefox Custom Tabs
|-

| style="background:Salmon" id="Firefox 57.0.1" | 57.0.1
| ''Firefox 57.0.1''
| November 29, 2017
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/57.0.1/releasenotes/ |title=Firefox — Notes (57.0.1) — Mozilla |publisher=Mozilla.org |date=November 29, 2017 |accessdate=November 30, 2017}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/57.0.1/releasenotes/ |title=Firefox for Android — Notes (57.0.1) — Mozilla |publisher=Mozilla.org |date=November 29, 2017 |accessdate=November 30, 2017}}</ref>
* Fix for a video color distortion issue on YouTube and other video sites with some AMD devices
* Fix for an issue with <nowiki>prefs.js</nowiki> when the profile path has non-ASCII characters
* Various security fixes
* Fixed an issue in which Google map crashes on OS X with Intel HD Graphics 3000
* Blocked injection of a client library associated with the RealPlayer Free player which is known to cause performance problems in Firefox
;Android
* Fixed an issue in which Stop button no longer appears immediately after starting a navigation
* Various security fixes
|-

| style="background:Salmon" id="Firefox 57.0.2" | 57.0.2
| ''Firefox 57.0.2''
| December 7, 2017
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/57.0.2/releasenotes/ |title=Firefox — Notes (57.0.2) — Mozilla |publisher=Mozilla.org |date=December 7, 2017 |accessdate=December 11, 2017}}</ref>
;Desktop
* Blocked old versions of G Data Endpoint Security for crashing Firefox on start up - Windows only
* Fix for a regression with WebGL and D3D9 - Windows only
|-

| style="background:Salmon" id="Firefox 57.0.3" | 57.0.3
| ''Firefox 57.0.3''
| December 28, 2017
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/57.0.3/releasenotes/ |title=Firefox — Notes (57.0.3) — Mozilla |publisher=Mozilla.org |date=December 28, 2017 |accessdate=January 1, 2018}}</ref>
;Desktop
* Fix for crash reporting issue that inadvertently sends background tab crash reports to Mozilla without user opt-in
|-

| style="background:Salmon" id="Firefox 57.0.4" | 57.0.4
| ''Firefox 57.0.4''
| January 4, 2018
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/57.0.4/releasenotes/ |title=Firefox — Notes (57.0.4) — Mozilla |publisher=Mozilla.org |date=January 4, 2018 |accessdate=January 5, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/57.0.4/releasenotes/ |title=Firefox for Android — Notes (57.0.4) — Mozilla |publisher=Mozilla.org |date=January 4, 2018 |accessdate=January 10, 2018}}</ref>
* Security fixes to address the Meltdown{{cn|date=January 2018}} and Spectre timing attacks
''on January 23, 2018''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:Pink" id="Firefox 58 Nightly" | 58.0a1
| ''Firefox 58.0 Nightly''
| September 22, 2017
| ''First Firefox 58.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 58 Developer Edition" | 58.0b1
| ''Firefox 58.0 Developer Edition''
| November 8, 2017
| ''First Firefox 58.0 Developer Edition build.''<ref name="Firefox 58.0beta Release Notes" />
|-

| style="background:Pink" id="Firefox 58 Developer Edition" | 58.0b4
| ''Firefox 58.0 Developer Edition''
| November 15, 2017
| ''Second Firefox 58.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 58 Beta" | 58.0b4
| ''Firefox 58.0 Beta 1''
| November 15, 2017
| ''First Firefox 58.0 Beta release.''<ref name="Firefox 58.0beta Release Notes">{{cite web|url=https://www.mozilla.org/en-US/firefox/58.0beta/releasenotes/ |title=Firefox — Beta Notes (58.0beta) — Mozilla |publisher=Mozilla |date=2017-11-08 |accessdate=2017-11-08}}</ref>
|-

| style="background:Salmon" id="Firefox 58" | 58.0
| ''Firefox 58.0''
| January 23, 2018
| ''Official Firefox 58.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/58.0/releasenotes/ |title=Firefox — Notes (58.0) — Mozilla |publisher=Mozilla.org |date=January 23, 2018 |accessdate=January 23, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/58.0/releasenotes/ |title=Firefox for Android — Notes (58.0) — Mozilla |publisher=Mozilla.org |date=January 23, 2018 |accessdate=January 23, 2018}}</ref>
* Performance improvements, including:
** Rendering graphics for Windows users by using Off-Main-Thread Painting (OMTP)
** Loading pages faster by changing how Firefox caches and retrieves JavaScript
* Improvements to Firefox Screenshots:
** Copy and paste screenshots directly to your clipboard
** Firefox Screenshots now works in Private Browsing mode
* Added support for credit card autofill
* Added Nepali (ne-NP) locale
* Users can enable Tracking Protection at all times.
* Fonts installed in non-standard directories will no longer appear blank for Linux users
* Various security fixes
* User profiles created in Firefox 58 (and in future releases) are not supported in previous versions of Firefox. Users who downgrade to a previous version should create a new profile for that version.
* Added a warning to alert users and site owners of planned security changes to sites affected by the gradual distrust plan for the Symantec certificate authority
* Implemented the PerformanceNavigationTiming API
* Added <nowiki>PerformanceResourceTiming.workerStart</nowiki> so sites can measure service worker startup time
;Android
* Performance improvements, including:
** Support for Progressive Web Apps
** Loading pages faster by changing how Firefox caches and retrieves JavaScript
* Added ability to Sync only over non-metered connections (e.g., WiFi). Setting available via Sync Preferences.
* Added full screen bookmark management with folder support
* Added support for FLAC (Free Lossless Audio Codec) playback
* Added ability to change the status bar color in themes
* Added Bengali from Bangladesh (bn-BD) and Nepali (ne-NP) locales
* Removed the Firefox Search widget from home screen
* Updated the Safe Browsing protocol to version 4
|-

| style="background:Salmon" id="Firefox 58.0.1" | 58.0.1
| ''Firefox 58.0.1''
| January 29, 2018
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/58.0.1/releasenotes/ |title=Firefox — Notes (58.0.1) — Mozilla |publisher=Mozilla.org |date=January 29, 2018 |accessdate=February 1, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/58.0.1/releasenotes/ |title=Firefox for Android — Notes (58.0.1) — Mozilla |publisher=Mozilla.org |date=January 29, 2018 |accessdate=February 1, 2018}}</ref>
* Security fix
* Fixed an issue in which, when using certain non-default security policies on Windows (for example with Windows Defender Exploit Protection or Webroot security products), Firefox 58.0 would fail to load pages
;Android
* Fixed performance issue whereby some installations were initially slow to load pages
|-

| style="background:Salmon" id="Firefox 58.0.2" | 58.0.2
| ''Firefox 58.0.2''
| February 7, 2018
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/58.0.2/releasenotes/ |title=Firefox — Notes (58.0.2) — Mozilla |publisher=Mozilla.org |date=February 7, 2018 |accessdate=February 8, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/58.0.2/releasenotes/ |title=Firefox for Android — Notes (58.0.2) — Mozilla |publisher=Mozilla.org |date=February 7, 2018 |accessdate=February 8, 2018}}</ref>
* Avoided a signature validation issue during update on macOS
* Blocklisted graphics drivers related to off main thread painting crashes
* Fixed tab crash during printing
* Fix for clicking links and scrolling emails on Microsoft Hotmail and Outlook (OWA) webmail
;Android
* Fixed an issue in which, if the user cancels a download by exiting our app chooser dialogue without choosing anything, the download continues invisibly in background
''on March 13, 2018''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:Pink" id="Firefox 59 Nightly" | 59.0a1
| ''Firefox 59.0 Nightly''
| November 13, 2017
| ''First Firefox 59.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 59 Developer Edition" | 59.0b1
| ''Firefox 59.0 Developer Edition''
| January 22, 2018
| ''First Firefox 59.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 59 Beta" | 59.0b1
| ''Firefox 59.0 Beta 1''
| January 22, 2018
| ''First Firefox 59.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 59" | 59.0
| ''Firefox 59.0''
| March 13, 2018
| ''Official Firefox 59.0 release.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/59.0/releasenotes/ |title=Firefox — Notes (59.0) — Mozilla |publisher=Mozilla.org |date=March 13, 2018 |accessdate=March 13, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/59.0/releasenotes/ |title=Firefox for Android — Notes (59.0) — Mozilla |publisher=Mozilla.org |date=March 13, 2018 |accessdate=March 13, 2018}}</ref>
* Performance enhancements:
** Faster load times for content on the Firefox Home page
** Faster page load times by loading either from the networked cache or the cache on the user’s hard drive (Race Cache With Network)
** Improved graphics rendering using Off-Main-Thread Painting (OMTP) for Mac users
* Drag-and-drop to rearrange Top Sites on the Firefox Home page, and customize new windows and tabs in other ways
* Added features for Firefox Screenshots:
** Basic annotation lets the user draw on and highlight saved screenshots
** Recropping to change the viewable area of saved screenshots
* Enhanced WebExtensions API including better support for decentralized protocols and the ability to dynamically register content scripts
* Improved Real-Time Communications (RTC) capabilities.
** Implemented RTP Transceiver to give pages more fine grained control over calls
** Implemented features to support large scale conferences
* Added support for W3C specs for pointer events and improved platform integration with added device support for mouse, pen, and touch screen pointer input
* Added the Ecosia search engine as an option for German Firefox
* Added the Qwant search engine as an option for French Firefox
* Added settings in about:preferences to stop websites from asking to send notifications or access your device’s camera, microphone, and location, while still allowing trusted websites to use these features
* Various security fixes
* Firefox Private Browsing Mode will remove path information from referrers to prevent cross-site tracking
;Android
* Added Firefox as an Assist App so users can start a search by long-pressing the home button
* Added support for HLS (HTTP Live Streaming) playback for improved compatibility with video sites
* Firefox Private Browsing Mode will remove path information from referrers sent to third parties to help prevent third-party data leakage
* The "about:" page was removed
* Locked video full screen in landscape mode
|-

| style="background:Salmon" id="Firefox 59.0.1" | 59.0.1
| ''Firefox 59.0.1''
| March 16, 2018
| ''Off-cycle security update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/59.0.1/releasenotes/ |title=Firefox — Notes (59.0.1) — Mozilla |publisher=Mozilla.org |date=March 16, 2018 |accessdate=March 16, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/59.0.1/releasenotes/ |title=Firefox for Android — Notes (59.0.1) — Mozilla |publisher=Mozilla.org |date=March 16, 2018 |accessdate=March 16, 2018}}</ref>
* Various security fixes
|-

| style="background:Salmon" id="Firefox 59.0.2" | 59.0.2
| ''Firefox 59.0.2''
| March 26, 2018
| ''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/59.0.2/releasenotes/ |title=Firefox — Notes (59.0.2) — Mozilla |publisher=Mozilla.org |date=March 26, 2018 |accessdate=March 31, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/59.0.2/releasenotes/ |title=Firefox for Android — Notes (59.0.2) — Mozilla |publisher=Mozilla.org |date=March 26, 2018 |accessdate=March 31, 2018}}</ref>
* Fixed invalid page rendering with hardware acceleration enabled
* Fixed an issue in which Windows 7 users with touch screens or certain 3rd party desktop applications which interact with Firefox through accessibility services may experience random browser crashes
* Fixed an issue in which browser keyboard shortcuts (eg copy Ctrl+C) don't work on sites that use those keys with resistFingerprinting enabled
* Fixed high CPU / memory churn caused by third-party software on some computers
* Fixed an issue in which users who have configured an "automatic proxy configuration URL" and want to reload their proxy settings from the URL will find the Reload button disabled in the Connection Settings dialog when they select Preferences/Options > Network Proxy > Settings
* Fixed an issue in which URL fragment identifiers break Service Worker responses
* Fixed an issue in which users trying to cancel a print around the time it completed would continue to get intermittent crashes
* Fixed broken getUserMedia (audio) on DragonFly, FreeBSD, NetBSD, OpenBSD. Video chat apps either wouldn't work or be always muted
* Various security fixes
;Android
* Fixed top crasher on Firefox for Android
* Fixed an issue in which URL fragment identifiers break Service Worker responses
|-

| style="background:Salmon" id="Firefox 59.0.3" | 59.0.3
| ''Firefox 59.0.3''
| April 30, 2018
| ''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/59.0.3/releasenotes/ |title=Firefox — Notes (59.0.3) — Mozilla |publisher=Mozilla.org |date=April 30, 2018 |accessdate=May 8, 2018}}</ref>
; Desktop
* Fix for compatibility with Windows 10 April 2018 update
''on May 9, 2018''.
|}

====<span id="Oldest supported"></span><span id="Latest releases"></span>Versions 60 through 69====<!-- these 'id' anchors are mainly for the convenience of editors who regularly add new information -- please move to table for 70+ when necessary -->

Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications.

{{#section:Firefox release history|color table}}

{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-

| rowspan="20" style="vertical-align:top;" | ''']'''
| style="background:Pink" id="Firefox 60 Nightly" | 60.0a1
| ''Firefox 60.0 Nightly''
| January 22, 2018
| ''First Firefox 60.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 60 Developer Edition" | 60.0b1
| ''Firefox 60.0 Developer Edition''
| March 5, 2018
| ''First Firefox 60.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 60 Beta" | 60.0b3
| ''Firefox 60.0 Beta''
| March 12, 2018
| ''First Firefox 60.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 60" | 60.0
| ''Firefox 60.0''
| May 9, 2018
| Official Firefox 60.0 release.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0/releasenotes/ |title=Firefox — Notes (60.0) — Mozilla |publisher=Mozilla.org |date=May 9, 2018 |accessdate=May 9, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/60.0/releasenotes/ |title=Firefox for Android — Notes (60.0) — Mozilla |publisher=Mozilla.org |date=May 9, 2018 |accessdate=May 9, 2018}}</ref>
* Added a policy engine that allows customized Firefox deployments in enterprise environments, using Windows Group Policy or a cross-platform JSON file
* DNS over HTTPS (DOH) functionality available.
* Enhancements to New Tab / Firefox Home
** Responsive layout that shows more content for users with wide-screen displays
** Highlights section includes web sites saved to Pocket
** More options to reorder sections and content on the page
** Pocket Sponsored Stories will appear for a percentage of users in the US.
* Redesigned Cookies and Site Storage section in Preferences for greater clarity and control of first- and third-party cookies
* Applied Quantum CSS to render browser UI
* Added support for Web Authentication API, which allows USB tokens for website authentication
* Enhanced camera privacy indicators: Firefox now turns off your camera and the camera's light when you disable video recording, and turns the camera and light on when you resume recording
* Added an option for Linux users to show or hide page titles in a bar at the top of the browser.
* Improved WebRTC audio performance and playback for Linux users
* Locale added: Occitan (oc)
* Various security fixes
* Changed the Windows shortcut for entering Reader View to F9, for better compatibility with keyboard layouts that use AltGr
* Bookmarks no longer support multiple keywords for the same URL unless the request has different POST data
* TLS certificates issued by Symantec before June 1st, 2016 are no longer trusted by Firefox
* Updated the Skia graphics library to milestone 66
* Changes affecting developers
;Android
* Implemented Quantum CSS (also known as Stylo) in Android for faster page rendering
* Added View Page Source option to the Page Action menu
* Various security fixes
* Changes affecting developers
|-

| style="background:Salmon" id="Firefox 60.0.1" | 60.0.1
|''Firefox 60.0.1''
|May 16, 2018
|''Off-cycle stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0.1/releasenotes/ |title=Firefox — Notes (60.0.1) — Mozilla |publisher=Mozilla.org |date=May 16, 2018 |accessdate=May 21, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/60.0.1/releasenotes/ |title=Firefox for Android — Notes (60.0.1) — Mozilla |publisher=Mozilla.org |date=May 16, 2018 |accessdate=May 21, 2018}}</ref>

* Avoided overly long cycle collector pauses with some add-ons installed
* Fixed an issue in which, after unchecking the "Sponsored Stories" option, the New Tab page now immediately stops displaying "Sponsored content" cards
* On touchscreen devices, fixed momentum scrolling on non-zoomable pages
* Fixed black map on Google Maps with updated Nvidia Web Drivers on macOS
* Corrected use of the right default background when opening tabs or windows in high contrast mode
* The Firefox uninstaller on Windows is now translated again
* Restored translations of the Preferences panels when using a language pack
* WebVR has been disabled by default on macOS
;Android
* On touchscreen devices, fixed momentum scrolling on non-zoomable pages
|-

| style="background:Salmon" id="Firefox 60.0.2" | 60.0.2
|''Firefox 60.0.2''
|June 6, 2018
|''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0.2/releasenotes/ |title=Firefox — Notes (60.0.2) — Mozilla |publisher=Mozilla.org |date=June 6, 2018 |accessdate=June 10, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/60.0.2/releasenotes/ |title=Firefox for Android — Notes (60.0.2) — Mozilla |publisher=Mozilla.org |date=June 6, 2018 |accessdate=June 10, 2018}}</ref>
;Desktop
* Fix for missing nodes in the developer tools Inspector panel
* Fix for font rendering when using third-party font managers on OS X 10.11 and earlier
* Various security fixes
;Both
* Updated to NSS 3.36.4 from 3.36.1:
** Fixed an issue in which connecting to a server that was recently upgraded to TLS 1.3 would result in a SSL_RX_MALFORMED_SERVER_HELLO error
** Fix for a crash on macOS related to authentication tokens, e.g. PK11 or WebAuthn
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on June 26, 2018''.
|-

| style="background:Salmon" id="Firefox 60esr" | 60.0esr
| ''Firefox 60.0esr''
| May 9, 2018
| Official Firefox 60.0 Extended Support Release (ESR).<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0esr/releasenotes/ |title=Firefox — Notes (60.0esr) — Mozilla |publisher=Mozilla.org |date=May 9, 2018 |accessdate=May 9, 2018}}</ref>
* Firefox Quantum arrives in the ESR channel. Key features include:
** A completely new browser engine, designed to take full advantage of the processing power in modern devices
** A redesigned interface with a clean, modern appearance, consistent visual elements, and optimizations for touch screens
** A unified address and search bar. New installs will see this unified bar.
** A revamped new tab page that includes top visited sites, recently visited pages, and recommendations from Pocket (in the US, Canada, and Germany)
** An updated product tour to orient new and returning Firefox users
* Support for enterprise environments, with a policy engine that allows customized Firefox deployments using Windows Group Policy or a cross-platform JSON file
* Firefox now exclusively supports extensions built using the WebExtension API. Unsupported legacy extensions will no longer work in Firefox 60 ESR, but they will continue to work in Firefox 52 ESR, which will be supported until September 2018.
* DNS over HTTPS (DOH) functionality available.
* TLS certificates issued by Symantec before June 1st, 2016 are no longer trusted by Firefox. The "<nowiki>security.pki.distrust_ca_policy</nowiki>" preference can be set to 0 to reinstate trust in those certificates
|-

| style="background:Salmon" id="Firefox 60.0.1esr" | 60.0.1esr
|''Firefox 60.0.1esr''
|May 16, 2018
|''Off-cycle stability update''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0.1esr/releasenotes/ |title=Firefox — Notes (60.0.1esr) — Mozilla |publisher=Mozilla.org |date=May 16, 2018 |accessdate=May 21, 2018}}</ref>
* Avoided overly long cycle collector pauses with some add-ons installed
* Fixed an issue in which, after unchecking the "Sponsored Stories" option, the New Tab page now immediately stops displaying "Sponsored content" cards
* On touchscreen devices, fixed momentum scrolling on non-zoomable pages
* Fixed black map on Google Maps with updated Nvidia Web Drivers on macOS
* Corrected use of the right default background when opening tabs or windows in high contrast mode
* The Firefox uninstaller on Windows is now translated again
* Restored translations of the Preferences panels when using a language pack
* WebVR has been disabled by default on macOS
|-

| style="background:Salmon" id="Firefox 60.0.2esr" | 60.0.2esr
|''Firefox 60.0.2esr''
|June 6, 2018
|''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.0.2esr/releasenotes/ |title=Firefox — Notes (60.0.2esr) — Mozilla |publisher=Mozilla.org |date=June 6, 2018 |accessdate=June 10, 2018}}</ref>
* Fix for missing nodes in the developer tools Inspector panel
* Various security fixes
* Updated to NSS 3.36.4 from 3.36.1:
** Fixed an issue in which connecting to a server that was recently upgraded to TLS 1.3 would result in a SSL_RX_MALFORMED_SERVER_HELLO error
** Fix for a crash on macOS related to authentication tokens, e.g. PK11 or WebAuthn
|-

| style="background:Salmon" id="Firefox 60.1.0esr" | 60.1.0esr
|''Firefox 60.1.0esr''
|June 26, 2018
|''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.1.0/releasenotes/ |title=Firefox 60.1.0esr, See All New Features, Updates and Fixes |date=June 26, 2018 |accessdate=June 26, 2018}}</ref>
* Various security fixes
* Various stability and regression fixes
|-

| style="background:Salmon" id="Firefox 60.2.0esr" | 60.2.0esr
|''Firefox 60.2.0esr''
|September 5, 2018
|''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.2.0esr/releasenotes/ |title=Firefox 60.2.0esr, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=September 5, 2018 |accessdate=September 5, 2018}}</ref>
* Various security fixes
* Various stability and regression fixes
|-

| style="background:Salmon" id="Firefox 60.2.1esr" | 60.2.1esr
|''Firefox 60.2.1esr''
|September 21, 2018
|''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.2.1esr/releasenotes/ |title=Firefox 60.2.1esr, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=September 21, 2018 |accessdate=September 21, 2018}}</ref>
* Disabled multiprocess support for users running old versions of the JAWS screen reader software
* Fixed a startup crash affecting users migrating from older ESR releases
* Cleaned up old NSS DB files after upgrading
* Various security fixes
|-

| style="background:Salmon" id="Firefox 60.2.2esr" | 60.2.2esr
|''Firefox 60.2.2esr''
|October 2, 2018
|''Off-cycle security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.2.2esr/releasenotes/ |title=Firefox 60.2.2esr, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=October 2, 2018 |accessdate=October 2, 2018}}</ref>
* Fixed hangs on macOS Mojave (10.14) when various dialog windows (upload, download, print, etc) are activated
* Various security fixes
|-

| style="background:Salmon" id="Firefox 60.3esr" | 60.3esr
|''Firefox 60.3.0esr''
|October 23, 2018
|''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.3.0esr/releasenotes/ |title=Firefox 60.3.0esr, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=October 23, 2018 |accessdate=October 23, 2018}}</ref>
* Various stability and regression fixes
* Various security fixes
|-

| style="background:Khaki" id="Firefox 60.4esr" | 60.4esr
|''Firefox 60.4.0esr''
|December 11, 2018
|''Regular security and stability update.''<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/60.4.0esr/releasenotes/ |title=Firefox 60.4.0esr, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=December 11, 2018 |accessdate=December 11, 2018}}</ref>
* Updated list of currency codes to include Unidad Previsional (UYW)
* Various security fixes
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on October 22, 2019''.
|-

| style="background:SkyBlue" id="Firefox 60.5esr" | 60.5esr
|''Firefox 60.5.0esr''
|January 29, 2019
|<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 60.6esr" | 60.6esr
|''Firefox 60.6.0esr''
|March 19, 2019
|<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 60.7esr" | 60.7esr
|''Firefox 60.7.0esr''
|May 14, 2019
|<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 60.8esr" | 60.8esr
|''Firefox 60.8.0esr''
|July 9, 2019
|<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 60.9esr" | 60.9esr
|''Firefox 60.9.0esr''
|September 3, 2019
|<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="vertical-align:top;" rowspan="6" | ''']'''
| style="background:Pink" id="Firefox 61 Nightly" | 61.0a1
| ''Firefox 61.0 Nightly''
| March 12, 2018
| ''First Firefox 61.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 61 Developer Edition" | 61.0b1
| ''Firefox 61.0 Developer Edition''
| May 2, 2018
| ''First Firefox 61.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 61 Beta" | 61.0b3
| ''Firefox 61.0 Beta''
| May 7, 2018
| ''First Firefox 61.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 61" | 61.0
| ''Firefox 61.0''
| June 25, 2018
| Official Firefox 61.0 release.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/61.0/releasenotes/ |title=Firefox — Notes (61.0) — Mozilla |publisher=Mozilla.org |date=June 26, 2018 |accessdate=June 26, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/61.0/releasenotes/ |title=Firefox for Android — Notes (61.0) — Mozilla |publisher=Mozilla.org |date=June 26, 2018 |accessdate=June 26, 2018}}</ref>
* Enhanced performance:
** Faster page rendering with Quantum CSS improvements and the new retained display list feature
** Faster switching between tabs on Windows and Linux
** WebExtensions now run in their own process on MacOS
* Convenient access to more search engines: You can now add search engines to the address bar “Search with” tool from the page action menu when on a webpage that provides an OpenSearch plugin
* Share links from Firefox for MacOS more easily: You can now share the URL of an active tab from the page actions menu in the address bar
* Improved security:
** On-by-default support for the latest draft of the TLS 1.3 specification
** Access to FTP subresources inside http(s) pages has been blocked
* A more consistent user experience: Improvements for dark theme support across the entire Firefox user interface
* More customization for tab management: added support to allow WebExtensions to hide tabs
* Improved bookmark syncing
* The settings for customizing your homepage and new tab page in Firefox have been added to a new Preferences section that can be accessed from Firefox at <nowiki>about:preferences#home</nowiki>. The settings can also be accessed via the gear icon on the New Tab page.
;Android
* Performance enhancements:
** Quantum CSS improvements which improve page rendering times
** Faster scrolling due to treating touch event listeners as passive by default
* Improved security: On-by-default support for the latest draft of the TLS 1.3 specification
* Fixed a recurring crash on Samsung Galaxy S8 devices running Android Oreo (8.0)
|-

| style="background:Salmon" id="Firefox 61.0.1" | 61.0.1
| ''Firefox 61.0.1''
| July 5, 2018
| Off-cycle stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/61.0.1/releasenotes/ |title=Firefox — Notes (61.0.1) — Mozilla |publisher=Mozilla.org |date=July 5, 2018 |accessdate=July 10, 2018}}</ref>
;Desktop
* Fixed broken website loading for Chinese users with accessibility enabled
* Fix for missing content on the New Tab Page and the Home section of the Preferences page
* Fixed loss of bookmarks under rare circumstances when upgrading from Firefox 60
* Improved playback of Twitch 1080p video streams
* Web pages no longer lose focus when a browser popup window is opened
* Fixed launching of downloads without a file extension on Windows
* Re-allowed downloading files from FTP sites via the "Save Link As" option when linked from HTTP pages
* Fixed extensions being unable to override the default homepage in certain situations
|-

| style="background:Salmon" id="Firefox 61.0.2" | 61.0.2
| ''Firefox 61.0.2''
| August 8, 2018
| Off-cycle stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/61.0.2/releasenotes/ |title=Firefox 61.0.2, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=August 8, 2018 |accessdate=August 17, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/61.0.2/releasenotes/ |title=Firefox for Android 61.0.2, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=August 8, 2018 |accessdate=August 17, 2018}}</ref>
* Adds support for automatically restoring your Firefox session after Windows restarts
* Improved website rendering with the Retained Display List feature enabled
* Fixed broken DevTools panels with certain extensions installed
* Fixed a crash for users with some accessibility tools enabled
;Android
* Fixed a crash on devices running Android KitKat 4.4 or earlier
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on September 5, 2018''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:Pink" id="Firefox 62 Nightly" | 62.0a1
| ''Firefox 62.0 Nightly''
| May 7, 2018
| ''First Firefox 62.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 62 Developer Edition" | 62.0b1
| ''Firefox 62.0 Developer Edition''
| June 19, 2018
| ''First Firefox 62.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 62 Beta" | 62.0b3
| ''Firefox 62.0 Beta''
| June 25, 2018
| ''First Firefox 62.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 62" | 62.0
| ''Firefox 62.0''
| September 5, 2018
| Official Firefox 62.0 release.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/62.0/releasenotes/ |title=Firefox 62.0, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=September 5, 2018 |accessdate=September 5, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/62.0/releasenotes/ |title=Firefox for Android 62.0, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=September 5, 2018 |accessdate=September 5, 2018}}</ref>
* Firefox Home (the default New Tab) now allows users to display up to 4 rows of top sites, Pocket stories, and highlights
* “Reopen in Container” tab menu option appears for users with Containers that lets them choose to reopen a tab in a different container
* In advance of removing all trust for Symantec-issued certificates in Firefox 63, a preference was added that allows users to distrust certificates issued by Symantec
* Added FreeBSD support for WebAuthn
* Improved graphics rendering for Windows users without accelerated hardware using Parallel-Off-Main-Thread Painting
* Support for CSS Shapes, allowing for richer web page layouts. This goes hand in hand with a brand new Shape Path Editor in the CSS inspector
* CSS Variable Fonts (OpenType Font Variations) support, which makes it possible to create beautiful typography with a single font file
* Updates for enterprise environments:
** AutoConfig is sandboxed to the documented API by default
* Added Canadian English (en-CA) locale
* Removed the description field for bookmarks
* Dark theme is automatically enabled in macOS 10.14 dark mode
* Changed the default setting to Enforce (3) for the security.pki.name_matching_mode preference
* Adobe Flash applets now run in a more secure mode using process sandboxing on macOS
* Users disconnecting from Sync are now offered the option to wipe their Firefox profile data (including bookmarks, passwords, history, cookies, and site data) from their desktop computer
* Changed how WebRTC handles screen sharing: When screen-sharing a window, the window will be brought to front
* Three-pane Inspector in Developer Tools separates the rules into its own panel
* Changes affecting developers
;Android
* Improved scrolling performance
* Faster page load times over WiFi connections by loading from the network cache if disk cache is slow
* “Product and feature tips” toggle in Notifications settings, allowing for more control over which notifications are shown
* WebRTC video sessions between Firefox for Android and Safari browsers works again
|-

| style="background:Salmon" id="Firefox 62" | 62.0.1
| ''Firefox 62.0.1''
| September 7, 2018
| Off-cycle stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/62.0.1/releasenotes/ |title=Firefox for Android 62.0.1, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=September 7, 2018 |accessdate=September 7, 2018}}</ref>
;Android
* Fixed a crash when navigating sites with WebGL content
|-

| style="background:Salmon" id="Firefox 62.0.2" | 62.0.2
| ''Firefox 62.0.2''
| September 21, 2018
| Off-cycle security and stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/62.0.2/releasenotes/ |title=Firefox 62.0.2, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=September 21, 2018 |accessdate=September 21, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/62.0.2/releasenotes/ |title=Firefox for Android 62.0.2, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=September 21, 2018 |accessdate=September 21, 2018}}</ref>
* Unvisited bookmarks can once again be autofilled in the address bar
* Fixed WebGL rendering issues
* Updates from unpacked language packs no longer break the browser
* Fix for fallback on startup when a language pack is missing
* Fixed an issue in which profile refresh from the Windows stub installer restarts the browser
* Properly restored window size and position when restarting on Windows
* Avoided crash when sharing a profile with newer (as yet unreleased) versions of Firefox
* Fixed an issue in which you do not undo removal of search engines when using a language pack
* Fixed rendering of some web sites
* Restored compatibility with some sites using deprecated TLS settings
* Fix for screen share on MacOS when using multiple monitors
* Various security fixes
;Android
* Fixed rendering of some web sites
* Restored compatibility with some sites using deprecated TLS settings
* Oversized quick share icons on Android 6.0 and newer
* Various security fixes
|-

| style="background:Salmon" id="Firefox 62.0.3" | 62.0.3
| ''Firefox 62.0.3''
| October 2, 2018
| Off-cycle security and stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/62.0.3/releasenotes/ |title=Firefox 62.0.3, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=October 2, 2018 |accessdate=October 2, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/62.0.3/releasenotes/ |title=Firefox for Android 62.0.3, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=October 2, 2018 |accessdate=October 2, 2018}}</ref>
* Fixed hangs on macOS Mojave (10.14) when various dialog windows (upload, download, print, etc) are activated
* Fixed playback of some encrypted video streams on macOS
* Various security fixes
;Android
* Various security fixes
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on October 23, 2018''.
|-

| style="vertical-align:top;" rowspan="7" | ''']'''
| style="background:Pink" id="Firefox 63 Nightly" | 63.0a1
| ''Firefox 63.0 Nightly''
| June 25, 2018
| ''First Firefox 63.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 63 Developer Edition" | 63.0b1
| ''Firefox 63.0 Developer Edition''
| August 27, 2018
| ''First Firefox 63.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 63 Beta" | 63.0b3
| ''Firefox 63.0 Beta''
| September 4, 2018
| ''First Firefox 63.0 Beta release.''
|-

| style="background:Salmon" id="Firefox 63" | 63.0
| ''Firefox 63.0''
| October 23, 2018
| Official Firefox 63.0 release.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/63.0/releasenotes/ |title=Firefox 63.0, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=October 23, 2018 |accessdate=October 23, 2018}}</ref><ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/63.0/releasenotes/ |title=Firefox for Android 63.0, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=October 23, 2018 |accessdate=October 23, 2018}}</ref>
* Performance and visual improvements for Windows users
** Moved the build infrastructure of Firefox on Windows to the Clang toolchain, bringing important performance gains
** Firefox theme now matches the Windows 10 OS Dark and Light modes
* Performance improvements for macOS users
** Improved reactivity
** Faster tab switching
** WebGL power preferences allow non-performance-critical applications and applets to request the low-power GPU instead of the high-power GPU in multi-GPU systems
* Added content blocking, a collection of Firefox settings that offer users greater control over technology that can track them around the web.
* WebExtensions now run in their own process on Linux
* Firefox now warns about having multiple windows and tabs open when quitting from the main menu
* Firefox now recognizes the operating system accessibility setting for reducing animation
* Added search shortcuts for Top Sites: Amazon and Google appear as Top Sites tiles on the Firefox Home (New Tab) page (U.S. only)
* Resolved an issue that prevented the address bar from autofilling bookmarked URLs in certain cases
* In the Library, the Open in Sidebar feature for individual bookmarks was removed
* The option to Never check for updates was removed from about:preferences
* The Ctrl+Tab shortcut now displays thumbnail previews of your tabs and cycles through tabs in recently used order
* Refreshed visual style of Developer Tools menus to improve navigation and consistency
* The Dev Tools accessibility inspector is now enabled by default
* Added support for Web Components custom elements and shadow DOM
* The inspector now ships with a Font Editor that allows you to control non-variable as well as variable fonts
;Android
* Added support for Picture-In-Picture video
* Started using notification channels
* Locales added: English from Canada (en-CA), and Ligurian (lij)
* App now targets Oreo with security and performance improvements and support for new features
|-

| style="background:Salmon" id="Firefox 63.0.1" | 63.0.1
| ''Firefox 63.0.1''
| October 31, 2018
| Off-cycle stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/63.0.1/releasenotes/ |title=Firefox 63.0.1, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=October 31, 2018 |accessdate=November 2, 2018}}</ref>
;Desktop
* Fixed an issue in which snippets are not loaded due to a missing element
* Fixed an issue in which print preview always shows 30% scale when it is actually Shrink To Fit
* Fixed an issue in which dialog displayed when closing multiple windows shows unreplaced %1$S placeholder in Japanese and potentially other locales
|-

| style="background:#a0e75a" id="Firefox 63.0.2" | 63.0.2
| ''Firefox 63.0.2''
| November 7, 2018
| Off-cycle stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/android/63.0.2/releasenotes/ |title=Firefox for Android 63.0.2, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=November 7, 2018 |accessdate=November 21, 2018}}</ref>
;Android
* Fixed an issue in which session history popup breaks after one usage
* Fixed flickering of (some) sticky elements on Twitter and other websites
* Fixed a hang in Samsung Galaxy devices
* Crash fixes
|-

| style="background:Salmon" id="Firefox 63.0.3" | 63.0.3
| ''Firefox 63.0.3''
| November 15, 2018
| Off-cycle stability update.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/63.0.3/releasenotes/ |title=Firefox 63.0.3, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=November 15, 2018 |accessdate=November 16, 2018}}</ref>
;Desktop
* Fixed an issue in which games using WebGL (created in Unity) get stuck after very short time of gameplay
* Fixed slow page loading for some users with specific proxy configurations
* Disabled HTTP response throttling by default for causing bugs with videos in background tabs
* Fixed an issue in which opening magnet links no longer works
* Crash fixes
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on December 11, 2018''.
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Pink" id="Firefox 64 Nightly" | 64.0a1
| ''Firefox 64.0 Nightly''
| September 4, 2018
| ''First Firefox 64.0 Nightly build.''
|-

| style="background:Pink" id="Firefox 64 Developer Edition" | 64.0b1
| ''Firefox 64.0 Developer Edition''
| October 16, 2018
| ''First Firefox 64.0 Developer Edition build.''
|-

| style="background:Pink" id="Firefox 64 Beta" | 64.0b3
| ''Firefox 64.0 Beta''
| October 23, 2018
| ''First Firefox 64.0 Beta release.''
|-

| style="background:#a0e75a" id="Firefox 64" | 64.0
| ''Firefox 64.0''
| December 11, 2018
| Official Firefox 64.0 release.<ref>{{cite web |url=https://www.mozilla.org/en-US/firefox/64.0/releasenotes/ |title=Firefox 64.0, See All New Features, Updates and Fixes |publisher=Mozilla.org |date=December 11, 2018 |accessdate=December 11, 2018}}</ref>
;Desktop
* Better recommendations: You may see suggestions in regular browsing mode for new and relevant Firefox features, services, and extensions based on how you use the web (for US users only)
* Enhanced tab management: You can now select multiple tabs from the tab bar and close, move, bookmark, or pin them quickly and easily
* Easier performance management: The new Task Manager page found at about:performance lets you see how much energy each open tab consumes and provides access to close tabs to conserve power
* Improved performance for Mac and Linux users, by enabling link time optimization (Clang LTO).
* More seamless sharing on Windows: Windows users can now share web pages using the native sharing experience
* Added option to remove add-ons using the context menu on their toolbar buttons
* Updated the policy engine on macOS to allow using configuration profiles to customize Firefox for enterprise deployments
* Various security fixes
* RSS feed preview and live bookmarks are available only via add-ons
* TLS certificates issued by Symantec are no longer trusted by Firefox
* about:crashes has been redesigned to make it clear when a crash is being submitted to Mozilla, as well as being clear that removing crashes locally does not remove them from <nowiki>crash-stats.mozilla.com</nowiki>
* The macOS keyboard shortcut to add "www" and ".com" to a URL is now ctrl-enter instead of -enter
* You may now overlay multiple CSS grids at the same time (up to 3) in the CSS Grid Inspector
* The Web Console's command line now highlights JavaScript syntax
* When hovering over elements in the Accessibility panel, the contrast ratio of text against background is now indicated
* Added support for the new CSS scrollbar specification
* WebVR is now available on macOS
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on January 29, 2019''.
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Pink" id="Firefox 65 Nightly" | 65.0a1
| ''Firefox 65.0 Nightly''
| October 23, 2018
| ''First Firefox 65.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar">{{cite web |url=https://wiki.mozilla.org/RapidRelease/Calendar |title=Mozilla Wiki – Rapid Release Calendar |publisher=Mozilla Wiki |accessdate=2018-12-10}}</ref>
|-

| style="background:Aquamarine" id="Firefox 65 Developer Edition" | 65.0b1
| ''Firefox 65.0 Developer Edition''
| December 4, 2018
| ''First Firefox 65.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Aquamarine" id="Firefox 65 Beta" | 65.0b3
| ''Firefox 65.0 Beta''
| December 10, 2018
| ''First Firefox 65.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 65" | 65.0
| ''Firefox 65.0''
| January 29, 2019
| Official Firefox 65.0 release.<ref name="Mozilla Wiki Rapid Release Calendar" />
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on March 19, 2019''.
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Aquamarine" id="Firefox 66 Nightly" | 66.0a1
| ''Firefox 66.0 Nightly''
| December 10, 2018
| ''First Firefox 66.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
| style="background:Plum" id="Firefox 66 Developer Edition" | 66.0b1
| ''Firefox 66.0 Developer Edition''
| January 28, 2019
| ''First Firefox 66.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 66 Beta" | 66.0b1
| ''Firefox 66.0 Beta''
| January 28, 2019
| ''First Firefox 66.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 66" | 66.0
| ''Firefox 66.0''
| March 19, 2019
| Official Firefox 66.0 release.<ref name="Mozilla Wiki Rapid Release Calendar" />
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on May 14, 2019''.
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Plum" id="Firefox 67 Nightly" | 67.0a1
| ''Firefox 67.0 Nightly''
| January 28, 2019
| ''First Firefox 67.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
| style="background:Plum" id="Firefox 67 Developer Edition" | 67.0b1
| ''Firefox 67.0 Developer Edition''
| March 18, 2019
| ''First Firefox 67.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 67 Beta" | 67.0b1
| ''Firefox 67.0 Beta''
| March 18, 2019
| ''First Firefox 67.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 67" | 67.0
| ''Firefox 67.0''
| May 14, 2019
| Official Firefox 67.0 release.<ref name="Mozilla Wiki Rapid Release Calendar" />
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on July 9, 2019''.
|-
| style="vertical-align:top;" rowspan="8" | ''']'''
| style="background:Plum" id="Firefox 68 Nightly" | 68.0a1
| ''Firefox 68.0 Nightly''
| March 18, 2019
| ''First Firefox 68.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
| style="background:Plum" id="Firefox 68 Developer Edition" | 68.0b1
| ''Firefox 68.0 Developer Edition''
| May 13, 2019
| ''First Firefox 68.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 68 Beta" | 68.0b1
| ''Firefox 68.0 Beta''
| May 13, 2019
| ''First Firefox 68.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 68" | 68.0
| ''Firefox 68.0''
| July 9, 2019
| Official Firefox 68.0 release.<ref name="Mozilla Wiki Rapid Release Calendar" />
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on September 3, 2019''.
|-

| style="background:SkyBlue" id="Firefox 68.0esr" | 68.0esr
| ''Firefox 68.0esr''
| July 9, 2019
| Official Firefox 68.0 Extended Support Release (ESR).<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 68.1esr" | 68.1esr
| ''Firefox 68.1esr''
| September 3, 2019
| <ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 68.2esr" | 68.2esr
| ''Firefox 68.2esr''
| October 22, 2019
| <ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 68.3esr" | 68.3esr
| ''Firefox 68.3esr''
| December 10, 2019
| <ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Plum" id="Firefox 69 Nightly" | 69.0a1
| ''Firefox 69.0 Nightly''
| May 13, 2019
| ''First Firefox 69.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
| style="background:Plum" id="Firefox 69 Developer Edition" | 69.0b1
| ''Firefox 69.0 Developer Edition''
| July 8, 2019
| ''First Firefox 69.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 69 Beta" | 69.0b1
| ''Firefox 69.0 Beta''
| July 8, 2019
| ''First Firefox 69.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 69" | 69.0
| ''Firefox 69.0''
| September 3, 2019
| Official Firefox 69.0 release.<ref name="Mozilla Wiki Rapid Release Calendar" />
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on October 22, 2019''.
|-
|}

====<span id="Future releases"></span>Versions 70 through 79====<!-- anchor is for convenience of editors who regularly add new information -- please move to table for 80+ when necessary -->

Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications.

{{#section:Firefox release history|color table}}

{| class="wikitable sortable" style="width:100%;"
|+ Release history
|-
! Browser name
! Version
! Codename
! Release date<ref name="FFReleases" />
! Release type and highlights<ref group="t" name="highlights" />
|-
| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Plum" id="Firefox 70 Nightly" | 70.0a1
| ''Firefox 70.0 Nightly''
| July 8, 2019
| ''First Firefox 70.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 69 Developer Edition" | 70.0b1
| ''Firefox 70.0 Developer Edition''
| September 2, 2019
| ''First Firefox 70.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 70 Beta" | 70.0b1
| ''Firefox 70.0 Beta''
| September 2, 2019
| ''First Firefox 70.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 69" | 70.0
| ''Firefox 70.0''
| October 22, 2019
| Official Firefox 70.0 release.<ref name="Mozilla Wiki Rapid Release Calendar" />
{{Failed verification|date=May 2018|talk=Specific release End Of Life Links seem to mostly point to the same irrelevant information|reason=Link to nonexistent header with nothing about EoL.}} ''on December 10, 2019''.
|-

| style="vertical-align:top;" rowspan="4" | ''']'''
| style="background:Plum" id="Firefox 71 Nightly" | 70.0a1
| ''Firefox 71.0 Nightly''
| September 2, 2019
| ''First Firefox 71.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
| style="background:Plum" id="Firefox 71 Developer Edition" | 71.0b1
| ''Firefox 71.0 Developer Edition''
| October 21, 2019
| ''First Firefox 71.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 71 Beta" | 71.0b1
| ''Firefox 71.0 Beta''
| October 21, 2019
| ''First Firefox 71.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:SkyBlue" id="Firefox 71" | 71.0
| ''Firefox 71.0''
| December 10, 2019
| Official Firefox 71.0 release.<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
| style="vertical-align:top;" rowspan="3" | ''']'''
| style="background:Plum" id="Firefox 72 Nightly" | 72.0a1
| ''Firefox 72.0 Nightly''
| October 21, 2019
| ''First Firefox 72.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
| style="background:Plum" id="Firefox 72 Developer Edition" | 72.0b1
| ''Firefox 72.0 Developer Edition''
| December 9, 2019
| ''First Firefox 72.0 Developer Edition build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="background:Plum" id="Firefox 72 Beta" | 72.0b1
| ''Firefox 72.0 Beta''
| December 9, 2019
| ''First Firefox 72.0 Beta release.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-

| style="vertical-align:top;" rowspan="1" | ''']'''
| style="background:Plum" id="Firefox 73 Nightly" | 73.0a1
| ''Firefox 73.0 Nightly''
| December 9, 2019
| ''First Firefox 73.0 Nightly build.''<ref name="Mozilla Wiki Rapid Release Calendar" />
|-
|}

{{#section:Firefox release history|color table}}


== CPU architectures == == CPU architectures ==
=== x86 family === === x86 family ===
Native ] ] are officially supported on Linux, macOS, and Windows (since version 42).<ref name="64-bit-win">{{cite web |title=Mozilla Firefox Web Browser |publisher=Mozilla |url=https://www.mozilla.org/en-US/firefox/all/ |accessdate=December 16, 2015}}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name= "platform support"/>--> Native ] ] are officially supported on Linux, macOS, and Windows (since version 42).<ref name="64-bit-win">{{cite web |title=Mozilla Firefox Web Browser |publisher=Mozilla |url=https://www.mozilla.org/en-US/firefox/all/ |access-date=December 16, 2015 |archive-date=August 24, 2011 |archive-url=https://web.archive.org/web/20110824004353/http://www.mozilla.com/en-US/firefox/all.html |url-status=live }}</ref>{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="platform support"/>-->


Mozilla made Firefox for 64-bit Linux a priority with the release of ], labeling it as tier 1 priority.{{Citation needed|date=June 2017}}<!-- Empty reference <ref name= "platform support"/>--><ref>{{cite web |title= Proposed changes to supported build configurations (tiers) |url= https://groups.google.com/d/topic/mozilla.dev.planning/jCUxGOwDs30/discussion |accessdate= July 14, 2012}}</ref> Since being labeled tier 1, Mozilla has been providing official 64-bit releases for its browser for Linux.<ref>{{cite web |title=Mozilla FTP directory for 64-bit Linux builds of Firefox 4 |publisher=Mozilla |url=ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/4.0/linux-x86_64/ |accessdate=July 14, 2012 |deadurl=yes |archiveurl=https://web.archive.org/web/20130209224310/http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/4.0/linux-x86_64/ |archivedate=February 9, 2013 |df=mdy-all }}</ref><ref>{{cite web |title=Expose x86_64 Linux builds on the download pages |work=Bugzilla |publisher=Mozilla|url=https://bugzilla.mozilla.org/show_bug.cgi?id=527907 |accessdate=July 14, 2012}}</ref> Vendor-backed 64-bit support has existed for Linux distributions such as ], ], and ] prior to Mozilla's 64-bit support, even though vendors were faced with the challenge of having to turn off the 64-bit ] due to its instability prior to Firefox&nbsp;4.<ref>{{cite web |title=FTP directory for Mozilla Firefox 13.0.1 nightly build candidates |publisher=Mozilla |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/13.0.1-candidates/build1/ |archiveurl= https://web.archive.org/web/20120619185311/http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/13.0.1-candidates/build1/ |archivedate=June 19, 2012}}</ref><ref>{{cite web |last=Zbarsky |first=Boris |title=Re: Requirements for being called Firefox 4 |work=mozilla.dev.planning on ] |publisher=] |url=https://groups.google.com/d/msg/mozilla.dev.planning/_9lkbHHuzuQ/TelJHovXuqgJ |accessdate=July 14, 2012}}</ref> Mozilla made Firefox for 64-bit Linux a priority with the release of ], labeling it as tier 1 priority.{{Citation needed|date=June 2017}}<!-- Empty reference <ref name="platform support"/>--><ref>{{cite web |title=Proposed changes to supported build configurations (tiers) |url=https://groups.google.com/d/topic/mozilla.dev.planning/jCUxGOwDs30/discussion |access-date=July 14, 2012}}</ref> Since being labeled tier 1, Mozilla has been providing official 64-bit releases for its browser for Linux.<ref>{{cite web |title=Mozilla FTP directory for 64-bit Linux builds of Firefox 4 |publisher=Mozilla |url=http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/4.0/linux-x86_64/ |access-date=July 14, 2012 |url-status=live |archive-url=https://web.archive.org/web/20130209224310/http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/4.0/linux-x86_64/ |archive-date=February 9, 2013}}</ref><ref>{{cite web |title=Expose x86_64 Linux builds on the download pages |website=bugzilla.mozilla.org |publisher=Mozilla |url=https://bugzilla.mozilla.org/show_bug.cgi?id=527907 |access-date=July 14, 2012 |archive-date=July 30, 2013 |archive-url=https://web.archive.org/web/20130730173642/https://bugzilla.mozilla.org/show_bug.cgi?id=527907 |url-status=live }}</ref> Vendor-backed 64-bit support has existed for Linux distributions such as ], ], and ] prior to Mozilla's 64-bit support, even though vendors were faced with the challenge of having to turn off the 64-bit ] due to its instability prior to Firefox&nbsp;4.<ref>{{cite web |title=FTP directory for Mozilla Firefox 13.0.1 nightly build candidates |publisher=] |url=https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/13.0.1-candidates/build1/ |archive-url=https://web.archive.org/web/20120619185311/http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/13.0.1-candidates/build1/ |archive-date=June 19, 2012}}</ref><ref>{{cite web |last=Zbarsky |first=Boris |title=Re: Requirements for being called Firefox 4 |website=mozilla.dev.planning on ] |url=https://groups.google.com/d/msg/mozilla.dev.planning/_9lkbHHuzuQ/TelJHovXuqgJ |access-date=July 14, 2012}}</ref>


The official releases of Firefox for macOS are universal builds that include both 32-bit and 64-bit versions of the browser in one package, and have been this way since Firefox 4. A typical browsing session uses a combination of the 64-bit browser process and a 32-bit plugin process, because some popular plugins still are 32-bit.<ref>{{cite web |last=Aas |first=Josh |title=Firefox 4 for Mac OS X: Under the Hood |work=Boom Swagger Boom |publisher=] |date=November 10, 2010 |url=http://boomswaggerboom.wordpress.com/2010/11/10/firefox-4-for-mac-os-x-under-the-hood/ |accessdate=January 10, 2013}}</ref> As of April 19, 2017, Firefox 53 has dropped support for 32-bit macOS.<ref>{{cite web |last=Brinkmann |first=Martin |title=Firefox 53.0 release: find out what is new: |url=https://www.ghacks.net/2017/04/19/firefox-53-0-release-find-out-what-is-new/ |website=] |date=April 19, 2017 |accessdate=April 20, 2017}}</ref> The official releases of Firefox for macOS are universal builds that include both 32-bit and 64-bit versions of the browser in one package, and have been this way since Firefox 4. A typical browsing session uses a combination of the 64-bit browser process and a 32-bit plugin process, because some popular plugins still are 32-bit.<ref>{{cite web |last=Aas |first=Josh |title=Firefox 4 for Mac OS X: Under the Hood |website=Boom Swagger Boom |publisher=] |date=November 10, 2010 |url=http://boomswaggerboom.wordpress.com/2010/11/10/firefox-4-for-mac-os-x-under-the-hood/ |access-date=January 10, 2013 |archive-date=July 7, 2012 |archive-url=https://archive.today/20120707001136/http://boomswaggerboom.wordpress.com/2010/11/10/firefox-4-for-mac-os-x-under-the-hood/ |url-status=dead }}</ref> As of April 19, 2017, Firefox 53 has dropped support for 32-bit macOS.<ref>{{cite web |url=https://www.ghacks.net/2017/04/19/firefox-53-0-release-find-out-what-is-new/ |title=Firefox 53.0 release: find out what is new |last=Brinkmann |first=Martin |website=] |date=April 19, 2017 |access-date=April 20, 2017 |archive-date=July 30, 2024 |archive-url=https://web.archive.org/web/20240730015518/https://www.ghacks.net/2017/04/19/firefox-53-0-release-find-out-what-is-new/ |url-status=live }}</ref>


The 32-bit and 64-bit versions of Windows can be used to run 32-bit Firefox.{{Citation needed|date=June 2017}}<!-- Empty reference <ref name=sysreq/>--> In late 2012, Mozilla announced 64-bit Windows builds would be stopped<ref>{{cite web |title=Bug 814009 – Disable windows 64 builds for now |work=bugzilla.mozilla.org |url=https://bugzilla.mozilla.org/show_bug.cgi?id=814009 |date=November 21, 2012 |accessdate=October 9, 2013}}</ref> but later reversed the decision.<ref>{{cite news |title=Mozilla backpedals on Firefox 64-bit for Windows, will keep nightly builds coming after all |date=December 22, 2012 |url= https://thenextweb.com/apps/2012/12/22/mozilla-backpedals-on-firefox-64-bit-for-windows-will-keep-nightly-builds-coming-after-all/ |accessdate=May 23, 2013}}</ref> {{As of|2015|04}}, 64-bit Windows builds are available as 38.0 Beta<ref name="win64-38.0beta">{{cite web |url= https://www.mozilla.org/en-US/firefox/beta/all/ |title= Download Firefox Beta in your language |work=Mozilla |accessdate= April 8, 2015}}</ref> and newer. 64-bit builds for Windows are officially supported as of November 2015 with the release of Firefox 42. All ] plugins except Adobe Flash Player are blacklisted and unsupported on both 32-bit and 64-bit versions.<ref>{{cite web |title=Use the Java plugin to view interactive content on websites |publisher=Mozilla |url=https://support.mozilla.org/en-US/kb/use-java-plugin-to-view-interactive-content |accessdate=November 4, 2015}}</ref> The 32-bit and 64-bit versions of Windows can be used to run 32-bit Firefox.{{Citation needed|date=June 2017}}<!-- Empty reference <ref name=sysreq/>--> In late 2012, Mozilla announced 64-bit Windows builds would be stopped<ref>{{cite web |title=Bug 814009 – Disable windows 64 builds for now |website=bugzilla.mozilla.org |url=https://bugzilla.mozilla.org/show_bug.cgi?id=814009 |date=November 21, 2012 |access-date=October 9, 2013 |archive-date=November 4, 2013 |archive-url=https://web.archive.org/web/20131104153144/https://bugzilla.mozilla.org/show_bug.cgi?id=814009 |url-status=live }}</ref> but later reversed the decision.<ref>{{cite news |title=Mozilla backpedals on Firefox 64-bit for Windows, will keep nightly builds coming after all |date=December 22, 2012 |url=https://thenextweb.com/apps/2012/12/22/mozilla-backpedals-on-firefox-64-bit-for-windows-will-keep-nightly-builds-coming-after-all/ |access-date=May 23, 2013 |archive-date=May 27, 2013 |archive-url=https://web.archive.org/web/20130527180505/http://thenextweb.com/apps/2012/12/22/mozilla-backpedals-on-firefox-64-bit-for-windows-will-keep-nightly-builds-coming-after-all/ |url-status=live }}</ref> {{As of|2015|04}}, 64-bit Windows builds are available as 38.0 Beta<ref name="win64-38.0beta">{{cite web |url=https://www.mozilla.org/en-US/firefox/beta/all/ |title=Download Firefox Beta in your language |website=Mozilla |access-date=April 8, 2015 |archive-date=April 10, 2015 |archive-url=https://web.archive.org/web/20150410221813/https://www.mozilla.org/en-US/firefox/beta/all/ |url-status=live }}</ref> and newer. 64-bit builds for Windows are officially supported as of November 2015 with the release of Firefox 42.


=== Other CPU architectures === === Other CPU architectures ===
Besides x86, Firefox also supported other CPU architectures including ], ], ], and ] on different tiers.<ref name="ARMv7_only">{{cite web |title=Supported build configurations – MDN|url=https://developer.mozilla.org/en-US/docs/Supported_build_configurations|accessdate=August 12, 2015}}</ref> Mozilla terminated support for PowerPC-based ] computers with Firefox 3.6, but a third-party project known as ] ported several newer versions of Firefox, the latest being based on Firefox 45 ESR. Besides x86, Firefox also supported other CPU architectures including ], ], ], and ] on different tiers.<ref name="ARMv7_only">{{cite web |title=Supported build configurations – MDN |url=https://developer.mozilla.org/en-US/docs/Supported_build_configurations |access-date=August 12, 2015|url-status=dead |archive-date=December 1, 2016 |archive-url=https://web.archive.org/web/20161201022448/https://developer.mozilla.org/en-US/docs/Supported_build_configurations}}</ref> Mozilla terminated support for PowerPC-based ] computers with Firefox 3.6, but a third-party project known as ] ported several newer versions of Firefox, the latest being based on Firefox 45 ESR.


== Mozilla Firefox timeline == == Mozilla Firefox timeline ==
{{Timeline Mozilla Firefox}} {{Timeline Mozilla Firefox}}


==Release compatibility==
== Security Bug Bounty Program ==
{{Firefox release compatibility}}
In the Mozilla Security Bug Bounty Program, a bounty payment is offered to those reporting unknown security bugs. The ] say that this is "designed to encourage security research in Mozilla software and to reward those who help us".<ref>{{cite web|url=https://www.mozilla.org/security/bug-bounty/|title=Mozilla Security Bug Bounty Program|author=|date=|work=mozilla.org|accessdate=October 21, 2016}}</ref>
{{Firefox for Android release compatibility}}
{{Firefox contrib release compatibility}}


== See also == ==See also==
{{Portal|Free and open-source software}}
* ]
* ]
* ]
* ]
* ]
* ]
* ]


== Notes == ==References==
{{notelist}} {{Reflist|30em}}
{{Reflist|group=Note|refs=
''Three Kings'', ''Royal Oak'', ''One Tree Hill'', '']'', and '']'' are all suburbs in ]; '']'' is a small seaside town on the ] in New Zealand. The codenames were chosen from these suburb names by ], who grew up in Auckland. The other codenames included in the Firefox roadmap are derived from an actual roadmap of a journey through ] to ]. The ] is a mountain in north-west Italy.
}}


==Further reading==
<references group=t />
{{Refbegin}}
* ] (2005). {{Webarchive|url=https://web.archive.org/web/20190413114122/http://wiki.mozilla.org/Global:1.9_Trunk_1.8_Branch_Plan |date=April 13, 2019 }}. Mozilla Wiki. Retrieved December 21, 2005.
{{Refend}}


== References == ==External links==
* for each version
{{reflist|30em}}
* for each version
* from MozillaWiki
* by ]
* {{cite web |url=http://weblogs.mozillazine.org/ben/archives/009698.html |title=Where Did Firefox Come From? |author=ben |website=MozillaZine |url-status=dead |archive-url=https://web.archive.org/web/20110717100539/http://weblogs.mozillazine.org/ben/archives/009698.html |archive-date=July 17, 2011}}
* , ]


{{Mozilla}} {{Mozilla}}
{{FOSS}}
{{Timeline of web browsers|2020s}}


] ]
] ]
]
]

Latest revision as of 23:24, 7 January 2025

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages)
This article may require cleanup to meet Misplaced Pages's quality standards. The specific problem is: Lots of re-used words, grammar errors, many sources to Mozilla's release note pages that don't have any secondary sourcing. Please help improve this article if you can. (May 2023) (Learn how and when to remove this message)
This article's lead section may be too short to adequately summarize the key points. Please consider expanding the lead to provide an accessible overview of all important aspects of the article. (January 2023)
(Learn how and when to remove this message)


Market share overview
According to StatCounter data
December 2024
This box:
Browser % of Fx % of total
Firefox 1 — —
Firefox 2 — —
Firefox 3 — —
Firefox 4 — —
Firefox 5–9 — —
Firefox 10–16 0.41% 0.01%
Firefox 17–23 — —
Firefox 24–30 — —
Firefox 31–37 — —
Firefox 38–44 — —
Firefox 45–51 — —
Firefox 52–59 2.02% 0.05%
Firefox 60–67 — —
Firefox 68–77 — —
Firefox 78–90 0.41% 0.01%
Firefox 91–101 — —
Firefox 102–114 — —
Firefox 115 and 115 ESR 10.53% 0.26%
Firefox 116 — —
Firefox 117 — —
Firefox 118 3.64% 0.09%
Firefox 119 — —
Firefox 120 — —
Firefox 121 — —
Firefox 122 — —
Firefox 123 — —
Firefox 124 — —
Firefox 125 0.41% 0.01%
Firefox 126 — —
Firefox 127 0.41% 0.01%
Firefox 128 and 128 ESR 3.24% 0.08%
Firefox 129 — —
Firefox 130 0.41% 0.01%
Firefox 131 0.81% 0.02%
Firefox 132 3.64% 0.09%
Firefox 133 65.18% 1.61%
Firefox 134 — —
All variants 100% 2.47%

Firefox was created by Dave Hyatt and Blake Ross as an experimental branch of the Mozilla browser, first released as Firefox 1.0 on November 9, 2004. Starting with version 5.0, a rapid release cycle was put into effect, resulting in a new major version release every six weeks. This was gradually accelerated further in late 2019, so that new major releases occur on four-week cycles starting in 2020.

Early versions

Main article: Firefox early version history

Rapid releases

In March 2011, Mozilla presented plans to switch to a faster 16-week development cycle, similar to Google Chrome. Ars Technica noted that this new cycle entailed "significant technical and operational challenges" for Mozilla (notably preserving third-party add-on compatibility), but that it would help accelerate Firefox's adoption of new web standards, feature, and performance improvements. This plan was implemented in April 2011. The release process was split into four "channels", with major releases trickling down to the next channel every six to eight weeks. For example, the nightly channel would feature a preliminary unstable version of Firefox 6, which would move to the experimental "Aurora" channel after preliminary testing, then to the more stable "beta" channel, before finally reaching the public release channel, with each stage taking around six weeks. For corporations, Mozilla introduced an Extended Support Release channel, with new versions released every 30 weeks (and supported for 12 more weeks after a new ESR version is released), though Mozilla warned that it would be less secure than the release channel, since security patches would only be backported for high-impact vulnerabilities.

In 2017, Mozilla abandoned the Aurora channel, which saw low uptake, and rebased Firefox Developer Edition onto the beta channel. Mozilla uses A/B testing and a staged rollout mechanism for the release channel, where updates are first presented to a small fraction of users, with Mozilla monitoring its telemetry for increased crashes or other issues before the update is made available to all users. In 2020, Firefox moved to a four-week release cycle, to catch up with Chrome in support for new web features. Chrome switched to a four-week cycle a year later.

Firefox 5 through 9

Firefox 5 was released on June 21, 2011, three months after the major release of Firefox 4. Firefox 5 is the first release in Mozilla's new rapid release plan, matching Google Chrome's rapid release schedule and rapid version number increments. Firefox 5 has significantly improved the speed of web-related tasks, such as loading pages with combo boxes or MathML. Mozilla also integrated the HTML video WebM standard into the browser, allowing playback of WebM videos.

Firefox 6 was released on August 16, 2011, introducing a permissions manager, new address bar highlighting (the domain name is black while the rest of the URL is gray), streamlining the look of the site identity block, a quicker startup time, a ScratchPad JavaScript compiler, and many other new features. This update also brought the infamous feature that caused JavaScript entered in the address bar to not run.

Firefox 7 was released on September 27, 2011, and uses as much as 50% less RAM than Firefox 4 as a result of the MemShrink project to reduce Firefox memory usage. Firefox 7.0.1 was released a few days later to fix a rare, but serious, issue with add-ons not being detected by the browser. Some URLs are trimmed in the address bar, so the "http://" scheme no longer appears, but "https://" is still displayed. Trailing slashes on domains are also hidden, for example: https://www.example.org/ becomes https://www.example.org.

Firefox 8 was released on November 8, 2011 and prompts users about any previously installed add-ons. Upon installation, a dialog box prompted users to enable or disable the add-ons. Add-ons installed by third-party programs were disabled by default, but user-installed add-ons were enabled by default. Mozilla judged that third-party-installed add-ons were problematic, taking away user control, lagging behind on compatibility and security updates, slowing down Firefox startup and page loading time, and cluttering the interface with unused toolbars. Added option in preferences to lazy load session tabs (prior to that it could be switched by config setting since version 4.0 beta 7).

Firefox 9 was released on December 20, 2011, includes various new features such as Type Inference, which boosts JavaScript performance up to 30%, improved theme integration for Mac OS X Lion, added two-finger swipe navigation for Mac OS X Lion, added support for querying Do Not Track status via JavaScript, added support for font-stretch, improved support for text-overflow, improved standards support for HTML5, MathML, and CSS, and fixed several security problems. It also features a large list of bug fixes.

Firefox 10 through 16

Firefox 10 and Firefox ESR 10 were released on January 31, 2012. Firefox 10 added a full screen API and improved WebGL performance, support for CSS 3D Transforms and for anti-aliasing in the WebGL standard for hardware-accelerated 3D graphics. These WebGL updates mean that more complex site and Web app animations can render smoothly in Firefox, and that developers can animate 2D objects into 3D without plug-ins. It also introduced a new CSS Style Inspector, which allow users to check out a site's structure and edit the CSS without leaving the browser. Firefox 10 assumed all add-ons made for at least Firefox 4 were compatible. The add-on developer is able to alert Mozilla that the add-on is incompatible, overriding compatibility with version 10 or later. This new rule also does not apply to themes.

Firefox 10 ESR is the first Extended Support Release (ESR) as previously on January 10, 2012, where the Mozilla Foundation announced the availability of an ESR version of Firefox. Firefox ESR is intended for groups who deploy and maintain the desktop environment in large organizations such as universities and other schools, county or city governments and businesses. During the extended cycle, no new features will be added to a Firefox ESR, only high-risk/high-impact security vulnerabilities or major stability issues will be corrected.

3D page inspector, a feature of versions 11 to 46.

Firefox 11 was released on March 13, 2012. Firefox 11 introduced many new features, including migration of bookmarks and history from Google Chrome, SPDY integrated services, Page Inspector Tilt (3D View), Add-on Sync, redesigned HTML5 video controls, and the Style Editor (CSS). The update also fixed many bugs, and improved developer tools.

Firefox 12 was released on April 24, 2012. Firefox 12 introduced few new features, but it made many changes and laid the ground work for future releases. Firefox 12 for Windows added the Mozilla Maintenance Service which can update Firefox to a newer version without a UAC prompt. It also added line numbers in the "Page Source" and centered find in page results. There were 89 improvements to Web Console, Scratchpad, Style Editor, Page Inspector, Style Inspector, HTML view and Page Inspector 3D view (Tilt). Many bugs were fixed, as well as many other minor under-the-hood changes. Firefox 12 is the final release to support Windows 2000 and Windows XP RTM & SP1.

Firefox 13 was released on June 5, 2012. Starting with this version, Windows support was exclusively for Windows XP SP2/SP3, Windows Vista, and Windows 7. Firefox 13 adds and updates several features, such as an updated new tab and home tab page. The updated new tab page is a feature similar to the Speed Dial already present in Opera, Google Chrome, Apple Safari, and Internet Explorer. The new tab page will display nine of the user's most visited websites, along with a cached image. In addition to the updated new tab and home tab page, Mozilla has added a user profile cleaner/reset, reduced hang times, and implemented tabs on demand. The user profile cleaner/reset provides a way for users to fix Firefox errors and glitches that may occur. Mozilla's tabs on demand restores tabs that were open in the previous session, but will keep the tabs unloaded until the user requests to view the page.

Firefox 14 was released on June 26, 2012, for mobile devices only, just outside the regular release schedule of the web browser. In order to sync the version numbers of the desktop and mobile versions of Firefox, Mozilla decided to release version 14.0.1 for both mobile and desktop on July 17, 2012, instead of Firefox 14 version 14.0 for the desktop and version 14.0.1 for mobile devices.

Firefox 14 introduces a new hang detector (similar to how Mozilla currently collects other data) that allows Mozilla to collect, analyze, and identify the cause of the browser freezing/hanging. Mozilla uses this information to improve the responsiveness of Firefox for future releases. In addition to tackling freezing and not-responding errors that occur because of Firefox, Mozilla implemented opt-in activation for plugins such as Flash and Java. Mozilla wants to reduce potential problems that could arise through the unwanted use of third-party applications (malware, freezing, etc.).

Firefox 15 was released on August 28, 2012, with a "Responsive Design View" developer tool, adds support for the Opus audio format, and adds preliminary native PDF support (disabled by default).

Firefox 15 introduced silent updates, an automatic update that will update Firefox to the latest version without notifying the user, a feature that the web browsers Google Chrome and Internet Explorer 8 and above have already implemented, although the user was able to disable that function. The startup time in Firefox 15 was improved for Windows users.

Firefox 16 was released on October 9, 2012, fixing outstanding bugs of the new features in Mac OS X Lion. There were improvements made to startup speed when a user wants to restore a previous session. Support for viewing PDF files inline was added in placement of a plugin. Support for web apps was added. Opus audio format is now enabled by default.

The roll-out of Firefox 16 revision 16.0.0 was stopped on October 10, 2012, after Mozilla detected a security flaw and recommended downgrading to 15.0.1 until the issue could be fixed. The security flaw was fixed in version 16.0.1, which was released the following day, October 11, 2012.

Firefox 17 through 23

Logo used from Firefox 23 to Firefox 56Logo used from Firefox 23 to Firefox 56

Firefox 17 and Firefox ESR 17 were released on November 20, 2012. It was not planned to bring as many user-facing features as previous releases, it brings improved display of location bar results, improvements to the silent update mechanism for users with incompatible add-ons, and refinements to the Click-To-Play system introduced in Firefox 14. A new feature for developers, an HTML tree editor is also included. Firefox 17 is the first version of the browser that uses SpiderMonkey 17.

Starting with Firefox 17, Mac OS X support is exclusively for Snow Leopard, Lion, and Mountain Lion.

Firefox 18 was released on January 8, 2013. A new feature for Firefox 18 is IonMonkey, Mozilla's next generation JavaScript engine, it also uses some functions of WebRTC. Firefox 19 was released on February 19, 2013, featuring a built-in PDF viewer.

Firefox 20 was released on April 2, 2013, and introduced a panel-based download manager, along with H.264 decoding on the <video> tag (on Windows only), and per-window private browsing. It also includes a new developer toolbox, that combines all developer tools into one panel.

Firefox 21 was released on May 14, 2013. The Social API now supports multiple providers, and an enhanced three-state UI for Do Not Track (DNT).

Firefox 22 was released on June 25, 2013. WebRTC is now enabled by default. Partial CSS Flexbox support was added (flex-wrap support was scheduled for Firefox 28). A new feature for Firefox 22 was OdinMonkey, Mozilla's next generation JavaScript engine.

Firefox 23 was released on August 6, 2013. It includes an updated Firefox logo, mixed content blocking enabled by default to defend against man-in-the-middle attacks, implementation of the <input type="range"> form control attribute in HTML5, dropping support for the <blink> HTML element as well as the text-decoration:blink CSS element, the restriction to have to "switch to a different search provider across the entire browser", and a global browser console, a new network monitor among other things. JavaScript is automatically enabled by the update, without regard to the previous setting, and the ability to turn it off has been removed from the interface, the "contentious" change was made because many websites depend on JavaScript and it was felt that users unaware that they had disabled JavaScript were attributing the resulting unpredictable layout to software bugs in Firefox.

Firefox 24 through 30

Firefox 29 with Australis interface, running on Windows 8.1

Firefox 24 and Firefox 24 ESR were released on September 17, 2013. The release includes support for the new scrollbar style in Mac OS X 10.7 (and newer), closing tabs to the right, an improved browser console for debugging, and improved SVG rendering, among other things. It is the first version of the browser that uses SpiderMonkey 24.

Firefox 25 was released on October 29, 2013. Firefox 25 Nightly was at one point slated to include the Australis theme, but Australis did not actually land on Nightly until Firefox 28, did not make it to Firefox 28 Aurora channel, and was finally available with Firefox 29. This release added support for <iframe srcdoc> attribute, background-attachment:local in CSS, along with Web audio API support, a separate find bar for each tab and many other bug fixes.

Firefox 26 was released on December 10, 2013. Firefox 26 changed the behavior of Java plugins to "click-to-play" mode instead of automatically running them. It also added support for H.264 on Linux, password manager support for script-generated fields, and the ability for Windows users without advanced write permissions to update Firefox, as well as many bug fixes and developer-related changes.

Firefox 27 was released on February 4, 2014. It adds improved Social API and SPDY 3.1 support, as well as enabling of TLS 1.1 and 1.2 by default after having been tested through a toggle in about:config since version 23 (TLS 1.1) and 24, released on September 17, 2013. Also, it brings many bug fixes, security improvements, and developer-related changes. Firefox 28 was released on March 18, 2014, and added support for VP9 video decoding and support for Opus in WebM.

Firefox 29 was released on April 29, 2014, and includes a redesigned interface codenamed Australis, it also removes the add-on bar and moves its content to the navigation bar. Additionally, it introduced automatic correction of protocol typos to the address bar, meaning that, for example, ttps:// is automatically corrected to https://. Firefox 30 was released on June 10, 2014. It adds support for GStreamer 1.0 and a new sidebar button, and most plugins are not activated by default.

Firefox 31 through 37

Firefox 31 and Firefox 31 ESR were released on July 22, 2014. Both versions added search field on the new tab page and were improved to block malware from downloaded files, along with other new features. Firefox 31 ESR is the first ESR to include the Australis interface, unifying the user experience across different Firefox versions. Firefox 24.x.x ESR versions would be automatically updated to ESR version 31 after October 14, 2014.

Firefox 32 was released on September 2, 2014. It shows off HTTP caching improvements, adds HiDPI/Retina support in the Developer Tools UI and widens HTML5 support, among other things.

Firefox 33 was released on October 14, 2014. It now has off-main-thread compositing (OMTC) enabled by default on Windows (which brings responsiveness improvements), OpenH264 support, search suggestions on about:home and about:newtab, address bar search improvements, session restore reliability improvements, and other changes.

Firefox 33.1 was released on November 10, 2014, celebrating Firefox's 10-year anniversary. Firefox 33.1.1 was released for desktop only on November 14, 2014, fixing a startup crash.

The logo of Firefox Hello.

Firefox 34 was released on December 1, 2014. It brings Firefox Hello (a WebRTC client for voice and video chat), an improved search bar, and the implementation of HTTP/2 (draft14) and ALPN, together with other features. It also disables SSLv3, and enables the ability to recover from a locked Firefox process and to switch themes and personas directly in the customization mode.

Firefox 35 was released on January 13, 2015. It brings support for a room-based conversations model to the Firefox Hello chat service, and other functions, it also includes security fixes. Firefox 36 was released for desktop on February 24, 2015, bringing full HTTP/2 support and other smaller improvements and fixes.

Firefox 37 was released on March 31, 2015, bringing a heartbeat user rating system, which provides user feedback about the Firefox, and improved protection against website impersonation via OneCRL centralized certificate revocation. Also, Bing search is changed to use HTTPS for secure searching, and added is support for opportunistic encryption of the HTTP traffic where the server supports HTTP/2's AltSvc feature.

Firefox 38 through 44

Both Firefox 38 and Firefox 38 ESR were released on May 12, 2015, with new tab-based preferences, Ruby annotation support and availability of WebSockets in web workers, along with the implementation of the BroadcastChannel API and other features and security fixes.

Firefox 39 was released on July 2, 2015, disabling insecure SSLv3 and RC4, improving performance for IPv6 fallback to IPv4 and including various security fixes. Firefox 39.0.3 was released on August 6, 2015, to fix a zero-day exploit.

Firefox 40 was released on August 11, 2015. On Windows 10, the Australis theme was updated to reflect the overall appearance of Windows 10, and the interface is adapted for usability on touchscreens when used in the operating system's "Tablet mode". Firefox 40 includes additional security features, including the filtering of pages that offer potentially unwanted programs, and warnings during the installation of unsigned extensions, in future versions, signing of extensions will become mandatory, and the browser will refuse to install extensions that have not been signed. Firefox 40 also includes performance improvements, such as off-main-thread compositing on Linux.

Firefox 41 was released on September 22, 2015. Among many additions are the ability to set a profile picture for a Firefox account, enhanced IME support using Text Services Framework, and instant messaging on Firefox Hello.

Firefox 42 was released on November 3, 2015. Among many additions are private browsing with tracking protection, IPv6 support in WebRTC, and the ability to view HTML source in a tab.

Firefox 43 was released on December 15, 2015. Major changes included the availability of a 64-bit version for Windows 7 and above, and a new strict blocklist.

Firefox 44 was released on January 26, 2016. Among many additions are the improvement of warning pages for certificate errors and untrusted connections, enabling of H.264 and WebM/VP9 video support on systems that don't support MP4/H.264, and support for the brotli compression format via HTTPS content-encoding. The "Ask me every time" cookies option was additionally removed without any notifications.

Firefox 45 through 51

Firefox 45 and Firefox 45 ESR were released on March 8, 2016. Among many additions were Instant Browser sharing through Hello, the addition of Guarani locale, the ability to filter snapshot output in memory tool, and the removal of the Tab Groups (panorama) feature.

Firefox 46 was released on April 26, 2016. Among the many additions were improved security of the JavaScript Just In Time (JIT) Compiler, the GTK3 integration (Linux only), HKDF support for Web Crypto API.

Firefox 47 was released on June 7, 2016. Among the many additions were support for Google's Widevine CDM on Windows and Mac OS X so streaming services like Amazon Video can switch from Silverlight to encrypted HTML video, enabling VP9 video codec for users with fast machines, the ability of embedded YouTube videos to play with HTML video if Flash is not installed, and the addition of the Latgalian language.

Firefox 48 was released on August 2, 2016. Among the many additions were enhanced download protection and the removal of the Windows Remote Access Service modem Autodial. It was also the first official release with "Electrolysis" (multi-process Firefox, meaning that the interface and web pages are running in separate processes in the computer) was enabled. It is the last Firefox version to support Mac OS X Snow Leopard, Mac OS X Lion, and OS X Mountain Lion.

Firefox 49 was released on September 20, 2016. Among the many additions were an updated Firefox Login Manager, improved video performance for users on systems that support SSE3 without hardware acceleration, added context menu controls to HTML audio and video that let users loop files or play files at 1.25x speed, improvements in about:memory reports for tracking font memory usage, and the removal of Firefox Hello. Additionally, support for processors without SSE2 extensions such as the AMD Athlon XP and Pentium III under Windows is dropped.

Firefox 50 was released on November 15, 2016. Among the many additions were playback video on more sites without plugins with WebM EME Support for Widevine on Windows and Mac, improved performance for SDK extensions or extensions using the SDK module loader, download protection for a large number of executable file types on Windows, Mac OS, and Linux, and increased availability of WebGL to more than 98 percent of users on Windows 7 and newer.

Firefox 51 was released on January 24, 2017. Among the many additions were added support for FLAC (Free Lossless Audio Codec) playback, better Tab Switching, support for WebGL 2, and a warning that is displayed when a login page does not have a secure connection.

Firefox 52 through 59

Logo used from Firefox 57 to Firefox 69Logo used from Firefox 57 to Firefox 69

Firefox 52 and Firefox 52 ESR were released on March 7, 2017. An important aspect of Firefox ESR 52.0 is that it is the first ESR version based on the Firefox Electrolysis (Firefox 48) code base. Firefox 52 added support for WebAssembly (while disabled in Firefox ESR 52), an emerging standard that brings near-native performance to Web-based games, apps, and software libraries without the use of plugins, automatic captive portal detection for easier access to Wi-Fi hotspots, and user warnings for insecure HTTP pages with logins. Firefox 52 dropped support for NPAPI plugins like Microsoft Silverlight and Java with the exception of Adobe Flash Player (except the ESR version which still supports NPAPI).

Firefox 53 was released on April 19, 2017. Starting with Firefox 53, Microsoft Windows support is exclusively for Windows 7 and above. Other major changes included improved graphics stability for Windows users with the addition of compositor process separation, the addition of light and dark "compact" themes based on the themes included with Firefox Developer Edition, the removal of support for 32-bit macOS and Linux for processors older than the Pentium 4 and Opteron processors, a new visual design for audio and video controls, support for WebM video with alpha compositing, which allows playing videos with transparent backgrounds, and support for displaying estimated reading time for pages in Reader Mode.

Firefox 54 was released on June 13, 2017. Major changes included simplifying the download button and download status panel, support for multiple content processes, the ability to create and save custom devices in responsive web design mode, and improved audio and video playback in the browser.

Firefox 55 was released on August 8, 2017. Major changes included the launch of Windows support for WebVR, options that let users optimize recent performance improvements, simplification of the installation process with a streamlined Windows stub installer, improvements to address bar functionality, and simplified printing from Reader Mode.

Firefox 56 was released on September 28, 2017. Among the many additions are: a new layout for the "Preferences" page, the launch of Firefox Screenshots, support for address form autofill, hardware acceleration for AES-GCM, update of the Safe Browsing protocol to version 4, improved security or verifying update downloads, and improved support for WebExtensions. Another change was the introduction of the mozlz4 format, a proprietary variant of the lz4 compression format (.mozlz4 and .jsonlz4 file extensions instead of .json.lz4 as per unix/linux standard). Session data is stored in the lz4 format instead of plain text. Firefox 56 cannot recognize the legacy plain text session files, only the lz4-encoded ones.

Firefox 57 was released on November 14, 2017, with the name Firefox Quantum. ZDNet dubbed it a "comeback" following years of falling market share against Google Chrome. The release included a new interface design, codenamed "Photon", and a new rendering engine almost twice as fast as the previous one used. One of the largest visual changes in Photon was the removal of the search box from the address bar. Firefox 57 no longer supports legacy add-ons using XUL technologies. That same day, Mozilla announced that Google would be the default search engine in the US and Canada, a departure from Yahoo, which had been the default search engine in the US and Canada since 2014.

Firefox 58 was released on January 23, 2018. Among the additions were: support for credit card autofill, the drop of support for user profiles in previous versions of Firefox, a warning to alert users and site owners of planned security changes to sites affected by the gradual distrust plan for the Symantec certificate authority, full screen bookmark management with folder support, support for FLAC (Free Lossless Audio Codec) playback, and the ability to change the status bar color in themes.

Firefox 59 was released on March 13, 2018. Among the additions were: faster load times and improved graphics, improved Real-Time Communications (RTC) capabilities, additional features for Firefox Screenshots, support for W3C specs for pointer events, Private Browsing Mode's removal of path information from referrers to prevent cross-site tracking, and the addition of Firefox as an Assist app, and support for HLS (HTTP Live Streaming) playback for improved compatibility with video sites.

Firefox 60 through 67

Firefox 60 and Firefox 60 ESR were released on May 9, 2018. It includes a policy engine that allows customized Firefox deployments in enterprise environments, using Windows Group Policy or a cross-platform JSON file, enhancements to New Tab / Firefox Home, a redesigned Cookies and Site Storage section in Preferences for greater clarity and control of first- and third-party cookies, the application of Quantum CSS to render browser UI, support for Web Authentication API, which allows USB tokens for website authentication, an option for Linux users to show or hide page titles in a bar at the top of the browser, improved WebRTC audio performance and playback for Linux users, and exclusive support for extensions built using the WebExtension API (ESR).

Firefox 61 was released on June 26, 2018. Among the many additions were: Improvements for dark theme support across the entire Firefox user interface, added support to allow WebExtensions to hide tabs, improved bookmark syncing, convenient access to more search engines, improved security and enhanced performance.

Firefox 62 was released on September 5, 2018. Among the many additions were: FreeBSD support for WebAuthn, a preference that allows users to distrust certificates issued by Symantec in advance of removing all trust for Symantec-issued certificates in Firefox 63, improved graphics rendering for Windows users without accelerated hardware using Parallel-Off-Main-Thread Painting, CSS Variable Fonts (OpenType Font Variations) support, support for CSS Shapes, allowing for richer web page layouts, improved scrolling performance, and faster page load times over Wi-Fi connections by loading from the network cache if disk cache is slow. The bookmarks' Description field was deprecated and will be removed completely in future releases.

Firefox 63 was released on October 23, 2018. Among the many additions and changes were: Performance and visual improvements for Windows and macOS users, content blocking, WebExtensions running in their own process in Linux, recognition of the operating system accessibility setting for reducing animation, the addition of Amazon and Google as Top Sites tiles on the Firefox Home (New Tab) page, and the removal of the "Never Check for Updates" option from "about:preferences" and the "Open in Sidebars" feature from the Library.

Firefox 64 version 64.0 was released on December 11, 2018. Firefox 64 for desktop provides better recommendations, enhanced tab management, easier performance management, improved performance for Mac and Linux users by enabling link time optimization (Clang LTO), more seamless sharing on Windows, the option to remove add-ons using the context menu on their toolbar buttons, TLS certificates issued by Symantec that are no longer trusted by Firefox, and the availability of WebVR on macOS.

Firefox 65 was released on January 29, 2019. Among the many additions and changes were: improved performance and web compatibility, with support for the WebP image format, enhanced security for macOS, Linux, and Android users via stronger stack smashing protection which is now enabled by default for all platforms (both desktop and Android), enhanced tracking protection, updated language settings in Preferences, support for Handoff on macOS, a better video streaming experience for Windows users, easier performance management, an improved pop-up blocker, the availability of Firefox for Windows with 32- and 64-bit MSI installers for easier enterprise deployments, and additional support for Flexbox.

Firefox 66 was released on March 19, 2019. Among the many additions and changes were: Prevention of websites from automatically playing sound, smoother scrolling (both), an improved search experience and performance and better user experience for extensions, the addition of basic support for macOS Touch Bar and of support for Windows Hello on Windows 10, along with the enabling of AV1 support on 32-bit Windows and macOS.

Firefox 67 was released on May 21, 2019. Major changes included lowering priority of setTimeout during page load, suspending (unloading) unused tabs to clear memory, the ability to block known cryptominers and fingerprinters in the Custom settings of the Content Blocking preferences, improvements to keyboard accessibility, usability and security improvements in Private Browsing, and protection against running older versions of the browser which can lead to data corruption and stability issues.

Firefox 68 through 77

Logo used from Firefox 70Logo used from Firefox 70

Firefox 68 and Firefox 68 ESR were released on July 9, 2019. Among the many additions were: Expansion of Dark Mode in Reader view, a new reporting feature in about:addons, cryptomining and fingerprinting protections, WebRender for Windows 10, Windows Background Intelligent Transfer Service (BITS) update download support, user and enterprise added certificates read from the OS by default (68 ESR), improved web page painting performance by avoiding redundant calculations during paint, and introduction of WebAuthn (the Web Authentication API, Android).

Firefox 69 was released on September 3, 2019. Among the additions were: Enhanced Tracking Protection, the Block Autoplay feature, support for the Web Authentication HmacSecret extension via Windows Hello for versions of Windows 10 May 2019 or newer, support for receiving multiple video codecs, JIT support for ARM64, and improvements for download UI, performance (Windows 10), and battery life (macOS).

Firefox 70.0.1 running on Windows 10, displaying the main page of Hebrew Misplaced Pages

Firefox 70 was released on October 22, 2019. Among the additions were: more privacy protection from Enhanced Tracking Protection, more security protection from Firefox Lockwise, improvements to core engine components for better browsing on more sites, a stand-alone Firefox account menu for easy access to Firefox services like Monitor and Send, the dark mode preference for built-in Firefox pages, and inactive CSS.

Firefox 71 was released on December 3, 2019. Among the additions were: improvements to the integrated password manager Lockwise, more information about Enhanced Tracking Protection in action, picture-in-picture for Windows, and native MP3 decoding on Windows, Linux, and macOS.

Firefox 72 was released on January 7, 2020. Among the additions were: the replacement of notification request pop-ups, the ETP blocking fingerprinting scripts by default, the availability of picture-in-picture video for macOS and Linux, and the removal of support for blocking images from individual domains because of low usage and poor user experience.

Firefox 73 was released on February 11, 2020. Among the additions were: a new global default zoom level setting, a "readability backplate" solution which places a block of background color between the text and background image, improved audio quality when playing back audio at a faster or slower speed, a prompt to save logins if a field in a login form was modified, and rolling out WebRender to laptops with Nvidia graphics cards with drivers newer than 432.00, and screen sizes smaller than 1920x1200.

Firefox 74 was released on March 10, 2020. Additions included: improvement of login management with the ability to reverse alpha sort (Name Z-A) in Lockwise, simple importing of bookmarks and history from Microsoft Edge on Windows and Mac, use of Add-ons Manager to remove add-ons installed by external applications, Facebook Container, which prevents Facebook from tracking across the web, and support for mDNS ICE. Initially, this release was also the first with TLS 1.0 and 1.1 disabled. However, out of concern for access to information during the COVID-19 pandemic, this change was rolled back.

Firefox 75 was released on April 7, 2020. Additions included: a number of improvements with Firefox's revamped address bar, the local cache of all trusted Web PKI Certificate Authority certificates known to Mozilla, the availability of Firefox in Flatpak on Linux, and the integration of Direct Composition on Windows.

Firefox 76 was released on May 5, 2020. Additions included: strengthened protections for online account logins and passwords, with innovative approaches to managing accounts during this critical time, allowing multitasking in Picture-in-Picture, support for Audio Worklets that will allow more complex audio processing like VR and gaming on the web, and two updates to the address bar improving its usability and visibility.

Firefox 77 was released on June 2, 2020. Additions included: pocket recommendations on Firefox' new tab for UK users, a new about:certificate page, and the removal of the browser.urlbar.oneOffSearches preference.

Firefox 78 through 90

Firefox 78 and Firefox 78 ESR were released on June 30, 2020. Among the many additions were: the Protections Dashboard, the addition of the Refresh button to the Uninstaller, a new WebRender rolled out to Windows users with Intel GPUs, the addition of Pocket Recommendations to users in the UK, the requirement of GNU libc 2.17, libstdc++ 4.8.1 and GTK+ 3.14 or newer versions on Linux, the disabling of TLS 1.0 and 1.1 and other improvements, and the addition of Kiosk Mode, client certificates, Service Worker and Push APIs, the Block Autoplay feature, picture-in-picture support, and the management of web certificates in about:certificate in 78 ESR.

Firefox 79 was released on July 28, 2020. Among the many additions were: a new WebRender rolled out to Windows users with Intel and AMD GPUs, the addition of Pocket Recommendations to users in Germany, the fixes for several crashes while using a screen reader, and updates to the password policy, the enabling of Enhanced Tracking Protection by default, and the ability to switch to Dark Mode.

Firefox 80 was released on August 25, 2020, for desktop. Among the many additions were: the setting as the default system PDF viewer, the new add-ons blocklist enabled to improve performance and scalability, support for RTX and Transport-cc for improved call quality in poor network conditions and better bandwidth estimation and better compatibility with many websites using WebRTC.

Firefox 81 was released on September 22, 2020. Among the many additions were: the ability to pause or play audio or video right from the keyboard or headset, the introduction of the Alpenglow theme, the ability to save, manage, and auto-fill credit card information for U.S. and Canada users, the support of Acroform, which allows users to fill in, print, and save supported PDF forms, the automatic revelation of the Bookmarks toolbar, the expansion of .xml, .svg, and .webp, and fixes for browser native HTML audio/video controls.

Firefox 82 was released on October 20, 2020. Changes included various changes to improve the video watching experience, improved page load and start up performance, saving a webpage to Pocket from the Firefox toolbar, and the ability to automatically purge cookies from sites not visited in 30 days.

Firefox 83 was released on November 17, 2020. Among the many additions were: significant updates to SpiderMonkey and JavaScript engine and replacement of the part of the JavaScript engine that helps to compile and display websites for the user, the introduction of the HTTPS-Only Mode, the support of pinch zooming for users with Windows touchscreen devices and touchpads on Mac devices, support of keyboard shortcuts for fast forwarding and rewinding videos in Picture-in-Picture, improved user interface, improved functionality and design for a number of Firefox search features, support of Acroform, and newly supported add-ons: FoxyProxy, Bitwarden, AdGuard AdBlocker, Tomato Clock, LeechBlock NG, and Web Archives.

Firefox 84 was released on December 15, 2020. Among the many additions were: native support for macOS devices built with Apple silicon CPUs, the rollout of WebRender to MacOS Big Sur, Windows devices with Intel Gen 6 GPUs, and Intel laptops running Windows 7 and 8, and an accelerated rendering pipeline for Linux/GNOME/X11 users for the first time, the use of more modern techniques for allocating shared memory on Linux, improving performance and increasing compatibility with Docker, the option to view open tabs side by side in a grid view, the ability to delete downloaded files within the app, the rollout of WebRender to more users on the Mali-G GPU series.

Firefox 85 was released on January 26, 2021. Among the many additions were: protection from supercookies, a type of tracker that can stay hidden in the browser and track users online, even after they have cleared cookies, the ability to save and access bookmarks more easily, the ability of the password manager to have users remove all their saved logins with one click, as opposed to having to delete each login individually, the removal of Adobe Flash support, and added support for the :focus-visible pseudo class.

Firefox 86 was released on February 23, 2021. Among the many additions were: added support for simultaneously watching multiple videos in Picture-in-Picture, improved Print functionality with a cleaner design and better integration with the computer's printer settings, credit card management and auto-fill for users in Canada, notable performance and stability improvements achieved by moving canvas drawing and WebGL drawing to the GPU process, the removal of DTLS 1.0 support or establishing WebRTC's PeerConnections, and the introduction of Total Cookie Protection to Strict Mode (both).

Firefox 87 was released on March 23, 2021. Among the many additions and removals were: the addition of SmartBlock, which provides stand-in scripts so that websites load properly, the new default HTTP Referrer policy (both), the improved "Highlight All" feature on Find in Page, full support for macOS built-in screen reader, VoiceOver, the disabling of the Backspace key as a navigation shortcut for the back navigation button, and the removal of Synced tabs, Recent highlights, and Pocket list from the Library menu, and the rollout of WebRender to more devices, with the following mobile GPUs now supported: Adreno 505, Adreno 506, Mali-T (Android).

Firefox 88 was released on April 19, 2021. Among the many additions and removals were: PDF forms supporting JavaScript embedded in PDF files, localized margin units, smooth pinch-zooming using a touchpad on Linux, isolation of window.name data to the website that created it, the removal of the "Take a Screenshot" feature from the Page Actions menu in the url bar, the disabling of FTP support and a new toggle button in the Network panel for switching between JSON formatted HTTP response and raw data.

Firefox 89 was released on June 1, 2021. Among the many additions and removals were: core experience redesigned and modernized to be cleaner, more inviting, and easier to use, simplified browser chrome and toolbar, clear, streamlined menus, updated prompts, inspired tab design, reduced number of alerts and messages, lighter iconography, a refined color palette, and more consistent styling throughout, enhancement of privacy of Private Browsing Mode with Total Cookie Protection, the introduction of the elastic overscroll effect known from many other applications for macOS users, added support for smart zoom, native context menus on macOS, Synced Tabs in the Tabs tray, support for the Event Timing API, and support for the CSS forced-colors media query (both).

Firefox 90 was released on July 13, 2021. Among the many additions and removals were: the application of updates in the background when Firefox is not running on Windows, a new page called about:third-party to help identify compatibility issues caused by third-party applications in Windows, the management of exceptions to HTTPS-Only mode in about:preferences#privacy, working hyperlinks in "Print to PDF", Version 2 of Firefox's SmartBlock feature, the addition of software WebRender for most users without its hardware accelerated version, improved software WebRender performance, removal of FTP support, support for Private Fields in DevTools, support for Fetch Metadata Request Headers, the ability to use client authentication certificates stored in hardware tokens or in Operating System storage, the ability to save, manage, and auto-fill credit card information for users shopping on Firefox, and Back/Forward Cache (aka BFCache) for webpages that use unload event listeners (Android).

Firefox 91 through 101

Firefox 91 and Firefox 91 ESR were released on August 10, 2021. Among the many additions and removals were: a build on Total Cookie Protection, support for logging into Microsoft, work, and school accounts using Windows single sign-on, the return of the Simplify page when printing feature, the addition of a new Scots locale, the address bar providing Switch to Tab results in Private Browsing windows, the automatic enable of High Contrast Mode when "Increase Contrast" is checked on MacOS, catch-up paints for almost all user interactions, the support of Javascript embedded in PDF files, the addition of SmartBlock, protection from supercookies, support of AcroForm, the removal of support for Adobe Flash (ESR), a "Set Firefox as your default browser" message on notification pane for new installs, the addition of eBay Search to help users with their shopping needs, and default autoplay setting updated to Blocking Audio Only (Android).

Firefox 92 was released on September 7, 2021. Among the many additions and removals were: an automatic upgrade to HTTPS using HTTPS RR as Alt-Svc headers, support of full-range color levels for video playback on many systems, support for images containing ICC v4 profiles on macOS, access of macOS share options from the Firefox File menu, the redesign of certificate error pages for better user experience, and added support for Web Authentication API, which allows USB tokens (such as the use of USB or Bluetooth Security Key) for website authentication (Android).

Firefox 93 was released on October 5, 2021. Among the many additions and removals were: support for the new AVIF image format, which is based on the modern and royalty free AV1 video codec, support for filling more forms for PDF viewer, automatic unload of tabs based on their last access time, memory usage, and other attributes for Windows when available system memory is critically low, blocking downloads that rely on insecure connections, protecting against potentially malicious or unsafe downloads, improved web compatibility for privacy protections with SmartBlock 3.0, a new referrer tracking protection in Strict Tracking Protection and Private Browsing, disabling of TLS ciphersuites that use 3DES, the addition of forward, back, and reload buttons in the toolbar on tablets, the auto-fill of logins and passwords by default, and the merging of site security and privacy info into one icon (Android).

Firefox 94 was released on November 2, 2021. Among the many additions and removals were: a selection of six fun seasonal Colorways (available for a limited time only), the usage of Apple's low power mode for fullscreen video on sites such as YouTube and Twitch, the addition of about:unloads, fewer interruptions on Windows because of a background agent that will download and install updates even if Firefox is closed, improved WebGL performance and reduced power consumption for Linux users, the introduction of Site Isolation to better protect all users against side-channel attacks, support for the new Snap Layouts menus when running on Windows 11, reduced CPU usage during socket polling for HTTPS connections, faster storage initialization, improved cold startup by reducing main thread I/O, and the new Inactive Tabs feature (Android).

Firefox 95 was released on December 7, 2021. Among the many additions and removals were: RLBox, a new technology that hardens Firefox against potential security vulnerabilities in third-party libraries, the addition of Firefox download from the Microsoft Store on Windows 10 and 11, reduced CPU usage on macOS in Firefox and WindowServer during event processing, reduced power usage of software decoded video on macOS, especially in fullscreen, the ability to move the Picture-in-Picture toggle button to the opposite side of the video, the enabling of Site Isolation, a User Agent override for Slack.com, which allows Firefox users to use more Call features and have access to Huddles, the new "Homepage" section in the Settings Menu, Hero Images in the "Jump Back In" section, confirmation of snack bar "Auto-close enabled" when a user enables auto-close from the tab tray, and support of Pocket (Thought Provoking Stories section) in Canada.

Firefox 96 was released on January 11, 2022. Among the many additions and removals were: significant improvements in noise-suppression and auto-gain-control as well as slight improvements in echo-cancellation, reduced main-thread load, the default of all cookies to having a SameSite=lax attribute which helps defend against Cross-Site Request Forgery (CSRF) attacks, the selection of printing odd/even pages, history highlights to recently visited sites, the display of better images for recent bookmarks on the home page, and improved "fill link from clipboard for Android 12 (Android).

Firefox 97 was released on February 8, 2022. Among the many additions and removals were: support and display for the new style of scrollbars on Windows 11, improvements to system font loading which makes opening and switching to new tabs faster in certain situations for macOS, removal of the 18 colorway themes of Firefox 94, removal of support for directly generating PostScript for printing on Linux, with the exception of printing to Postscript printers, and the addition of a new prompt when users attempt to leave private browsing with active downloads (Android).

Firefox 98 was released on March 8, 2022. Among the many additions were: a new optimized download flow, in which, instead of prompting every time, files will download automatically, allowing users to choose from a number of built-in search engines to set as their default, the ability to change Wallpapers on Homepage, and the ability to clear cookies and website data for a single domain (Android).

Firefox 99 was released on April 5, 2022. Among the many additions were: the ability to toggle Narrate in ReaderMode with the keyboard shortcut "n", added support for search—with or without diacritics—in the PDF viewer, support for credit card autofill and capture in Germany and France, the ability to clear cookies and data for a single domain, and improved performance of Pocket articles on the homescreen (Android).

Firefox 100 was released on May 3, 2022. Among the many additions were: support for captions/subtitles display on YouTube, Amazon Prime Video, and Netflix videos watched in Picture-in-Picture, which now supports video captions on websites that use WebVTT (Web Video Text Track) format, support for HDR video on macOS, hardware accelerated AV1 video decoding on Windows with supported GPUs, video overlay on Windows for Intel GPUs, reducing power usage during video playback, improved fairness between painting and handling other events, support for credit card autofill and capture in the UK, support for profiling multiple java threads, updated History, and bookmark search (Android).

Firefox 101 was released on May 31, 2022. Among the many additions were: the prefers-contrast media query, which allows sites to detect if the user has requested that web content is presented with a higher (or lower) contrast, all non-configured MIME types that can now be assigned a custom action upon download completion, the use of as many microphones at the same time, during video conferencing, added support for large, small, dynamic viewport units and logical ones (*vi and *vb), added web conferencing support for enumerating and selecting multiple audio input devices through navigator.mediaDevices.enumerateDevices(), and added support for using the magnifier on Android 9+ for positioning the cursor in forms on web pages (Android).

Firefox 102 through 114

Firefox 102 and Firefox 102 ESR, released on June 28, 2022, gained the ability to turn off the automatic opening of the download pane, protections against tracking through URL query parameters when Enhanced Tracking Protection is set to "strict", subtitles in Picture-in-Picture (PiP) for sites including HBO Max and Disney+, and improved security by isolating audio decoding into its own sandboxed process.

Firefox 103, released on July 26, 2022, improved responsiveness on macOS during periods of high CPU load by switching to a modern lock API, required fields highlighted in PDF forms, improved performance on high-refresh rate monitors (120 Hz+), improved Picture-in-Picture subtitles, which are now available at Funimation, Dailymotion, Tubi, Hotstar, and SonyLIV, buttons in the Tabs toolbar reachable with Tab, Shift+Tab, and Arrow keys, Windows' "Make text bigger" accessibility setting now affecting all the UI and content pages, rather than only applying to system font sizes, the browser getting pinned to the Windows taskbar during installation on Windows 10 and 11, and the removal of a configuration option to allow SHA-1 signatures in certificates, which are not supported.

Firefox 104 was released on August 23, 2022. Among the many additions and removals were: the availability of subtitles for Disney+ in Picture-in-Picture, support for both the scroll-snap-stop property as well as re-snapping, and the ability of the Firefox profiler to analyze power usage of a website for Apple M1 and Windows 11 only, while the Firefox UI itself will now be throttled for performance and battery usage when minimized or occluded, in the same way background tabs are.

Firefox 105 was released on September 20, 2022. Among the many additions and removals were: an option to print only the current page from the print preview dialog, support for partitioned service workers in third-party contexts, a swipe to navigate (two fingers on a touchpad swiped left or right to perform history back or forward) on Windows, compliance with the User Timing L3 specification, which adds additional optional arguments to the performance.mark and performance.measure methods to provide custom start times, end times, duration, and attached details, faster searching in large lists for individual items, which replaces array.includes and array.indexOf with an optimized SIMD version, support for the Offscreen Canvas DOM API with full context and font support.

Firefox 106 was released on October 18, 2022. Among the many additions and removals were: the possibility to edit PDFs: including writing text, drawing, and adding signatures, the ability to become the default PDF application on Windows systems on setting Firefox as the default browser, the ability to pin the Windows taskbar on Windows 10 and 11 for simpler access, the redesign of private windows to increase the feeling of privacy, swipe-to-navigate (two fingers on a touchpad swiped left or right to perform history back or forward) for Linux users on Wayland, Text Recognition in images for users of macOS 10.15 and higher, the addition of "Firefox View", the introduction of 18 new Colorways with the launch of "Independent Voices" collection, major upgrade to WebRTC capabilities, and wallpapers for the "Independent Voices" collection.

Firefox 107 was released on November 15, 2022. Among the many additions and removals were: improved performance of the instance when Microsoft's IME and Defender retrieve the URL of a focused document in Windows 11 version 22H2, support of power profiling (visualizing performance data recorded from web browsers) on Linux and Mac with Intel CPUs, in addition to Windows 11 and Apple Silicon, a couple of helpful improvements in DevTools making it easier to debug WebExtensions, with a new argument allowing users to automatically open DevTools just in case, and a Reload button in the DevTools toolbox to see the changes, the availability of Total Cookie Protection, and enabled text selection magnifier for website text.

Firefox 108 was released on December 13, 2022. Among the many additions and removals were: enabling by default of import maps, which allow web pages to control the behavior of JavaScript imports, processes used for background tabs getting the use of efficiency mode on Windows 11 to limit resource use, the ability to open the Process manager via the Shift+Esc keyboard shortcut, improved frame scheduling when under load, support for properly color correcting images tagged with ICCv4 profiles, support for the WebMIDI API and a new experimental mechanism for controlling access to dangerous capabilities, the ability to save web pages as PDF files to conveniently access them later from the Downloads folder, and the ability to organize tabs in the tabs tray by long-pressing on a tab.

Firefox 109 was released on January 17, 2023. Among the many additions and removals were: the enabling of Manifest Version 3 (MV3) extension support by default, the enabling of the Arbitrary Code Guard exploit protection in the media playback utility processes, the native HTML date picker for date and datetime inputs being used with a keyboard alone, a built-in dictionary for the Firefox spellchecker for builds in the Spanish and Argentine Spanish locales, and the removal of Colorways.

Firefox 110 was released on February 14, 2023. Major changes included support for importing bookmarks, history, and password data from the Opera GX and Vivaldi web browsers, support for Canvas2D GPU-acceleration, support for GPU "sandboxing" on Windows, and various security fixes along with various improvements made to WebGL to improve performance. There were also various features added for web developers such as support for CSS size container queries.

Firefox 111 was released on March 14, 2023. Among the many additions and removals were: the enabling of Windows native notifications, the ability for Firefox Relay users to opt-in to create Relay email masks directly from the credential manager, the Silhe Friulian (fur) and Sardinian (sc) locales, support of the use of the rel attribute on form elements, allowing the specification of the relationship between the current document and the form target in a simpler, cross-browser way, the enabling of Origin private file system access, a new storage API that enables web applications to store and retrieve data from and to the filesystem in a sandbox, the ability for users to view PDF documents as they browse, and the addition of Total Cookie Protection to Enhanced Tracking Protection's Strict Mode.

Firefox 112 was released on April 11, 2023. Major changes included the ability to reveal passwords in password fields, the ability to use the middle click button on a mouse to close tabs in the tab list, along with the ability to use the Ctrl + Shift + T keyboard shortcut to restore a previous browser session, among other changes and bug fixes.

Firefox 113 was released on May 9, 2023. Major changes included enhanced Picture-in-Picture; private windows protecting users even better by blocking third-party cookies and storage of content trackers; the inclusion of special characters in passwords generated by the browser; support for AV1 Image Format files containing animations (AVIS), improving support for AVIF images across the web; a tighter Windows GPU sandbox; and the availability of the browser in the Tajik (tg) language.

Firefox 114 was released on June 6, 2023. Major changes included an added UI to manage the DNS over HTTPS exception list; the accessibility of the Bookmarks menu by adding the Bookmarks menu button to the toolbar, the ability for the user to restrict searches to their local browsing history by selecting Search history from the History, Library or Application menu buttons; the ability for macOS users to capture video from their cameras in all supported native resolutions, enabling resolutions higher than 1280x720; the possibility for users to reorder the extensions listed in the extensions panel; the preference of FIDO2 / WebAuthn authenticators over USB; the availability of Pocket Recommended content in France, Italy, and Spain (desktop); and the Open in app button in PDF viewer opening PDFs in an external app (Android).

Firefox 115 through 127

Firefox 115 and Firefox 115 ESR were released on July 4, 2023. Major changes included the ability to bring over payment methods saved in Chrome-based browsers to the browser; the enabling of hardware video decoding for Intel GPUs on Linux; the close buttons on the Tab Manager dropdown; a refreshed and streamlined user interface for importing data in from other browsers; the ability for users without platform support for H264 video decoding to fallback to Cisco's OpenH264 plugin for playback; the ability for middle clicks on the new tab button to open the xclipboard contents in the new tab on Linux (desktop); and the address button's new search bar that allows users to easily switch between search engines and search their bookmarks and browsing history (Android).

Firefox 116 was released on August 1, 2023. Starting with Firefox 116, Microsoft Windows support is exclusively for Windows 10 and above. Major changes included the sidebar switcher allowing users to access Bookmarks, History and Synced Tabs panels easily, quickly switch between them, move the sidebar to another side of the browser window, or close the sidebar; available access to the release notes in the update notification prompt in the form of a "Learn More" link whenever an update is available in English locales; the ability for users to copy any file from their operating system and paste it into the browser; the volume slider in Picture-in-Picture; the possibility to edit existing text annotations; the improvement of the upload performance of HTTP/2 on those with a higher bandwidth delay product; added support for the dirname attribute to pass text directionality information about input and textarea elements to the server; added support for CSP3 external hashes; the Audio Output Devices API that now enables sites to redirect audio from media elements to permitted output devices (speakers) other than the system default for the user-agent; added upport for proper BYOB readers on Fetch and WebTransport, which allows developers to prepare their ArrayBuffer so that it can be reused for read requests and thus saves memory allocation (desktop); and fixes to pull-to-refresh issues and desktop mode's zoom issues on some sites and "Open links in apps" issue when Firefox is not the default browser (Android).

Firefox 117 was released on August 29, 2023. Major changes included the extension of support for credit card autofill to users running the browser in the IT, ES, AT, BE, and PL locales; the ability for macOS users to control the tabability of controls and links via about:preferences; the addition of a dom.event.contextmenu.shift_suppresses_event preference to prevent the context menu from appearing; the browser no longer showing its own screen sharing indicator on Wayland desktop environments; the enhancement of web compatibility inspection with the new CSS compatibility tooltip in the Developer Tools Inspector; added support for improved CSS nesting by default; support for RTCRtpScriptTransform, ReadableStream.from (allowing creation of a ReadableStream from an (async) iterable), and the math-style and math-depth CSS properties and the font-size: math value (desktop); and support for pasting images into contenteditable & designMode elements (Android).

Firefox 118 was released on September 26, 2023. Major changes included the introduction of automated translation of web content, courtesy of the EU-funded Project Bergamot; the use of the FDLIBM math library on all systems to improve anonymity with Fingerprint Protection via web audio in the browser; the restriction of visibility of website fonts to system fonts and language pack fonts to mitigate font fingerprinting in Private Browsing windows; the availability of Video Effects and background blur on Google Meet; the ability for U.S. Firefox Suggest users to see browser add-on suggestions right in the address bar based on their keywords; support for CSS math functions round, mod, rem, pow, sqrt, hypot, log, exp, abs, and sign; OpaqueResponseBlocking enabled by default (desktop); the availability of printing page content from the browser or share menu; the opening of pinned user shortcuts in an existing tab if it already has the same URL; and the clearing of site data being moved from "Browsing history and site data" to the "Cookies and site data" menu item (Android).

Firefox 119 was released on October 24, 2023. Major changes included the addition of Firefox view and the PDF editor; recently closed tabs now persisting between sessions that don't have automatic session restore enabled; the ability to import extensions from Google Chrome; support for the partitioning of Blob URLs, which mitigates a potential tracking vector that third-party agents could use to track an individual; the restriction of the visibility of website fonts to system fonts and language pack fonts in Enhanced Tracking Protection strict mode to mitigate font fingerprinting; an update to the Storage Access API to improve security while mitigating website breakages and further enabling the phase out of third-party cookies in the browser; the addition of Encrypted Client Hello (ECH), which extends the encryption used in TLS connections to cover more of the handshake and better protect sensitive fields; media sniffing no longer being applied to files served as type application/octet-stream; the ability for the mouse pointer to disappear while typing if the relevant Windows mouse properties system setting is enabled; the inclusion of the Santali (sat) language; a fix for an issue causing unexpected jumps in scroll position on Facebook; several enhancements to the Inactive CSS styles feature, which assists in identifying CSS properties that have no effect on an element; the automatic switch to a raw data view if the JSON is invalid or broken; added support for ARIA reflection for simple attributes and default Accessibility Semantics for Custom Elements; added support for credentialless in Cross-Origin-Embedder-Policy; added CSS attr() function for a fallback parameter; easier grouping of items by using the methods Object.groupBy or Map.groupBy (desktop); added support for the prefers-contrast and prefers-reduced-transparency media query on Android 14; and a fix for a crash encountered by some users in fullscreen video (Android).

Firefox 120 was released on November 21, 2023. Major changes included added support for a new "Copy Link Without Site Tracking" feature in the context menu which ensures that copied links no longer contain tracking information; added support for a setting (in Preferences → Privacy & Security) to enable Global Privacy Control and inform websites that the user doesn't want their data to be shared or sold; the enhancement of the Canvas APIs with Fingerprinting Protection for the browser's private windows and ETP-Strict privacy configuration for the protection of users' online privacy; the enabling of Cookie Banner Blocker and URL Tracking Protection by default in private windows for all users in Germany; the import of TLS trust anchors (e.g., certificates) from the operating system root store; the addition of keyboard shortcuts for editing and deleting a selected credential on about:logins; the ability for Ubuntu Linux to import from Chromium when both are installed as Snap packages; added support for corner snapping on Windows and Linux for Picture-in-Picture; the addition of the User Activation API, which allows servers to send resource Link headers before the final HTTP response and improves performance on servers using this feature; the ability for users to use an added devtools feature to simulate browser tabs to be offline; the Style Editor panel's feature of a new "Pretty Print" button located in the footer of the panel, similar to the pretty print button found in the Debugger panel, used to format stylesheets (e.g., those that are minified); the Rules panel within the inspector panel no longer displaying colors in the new CSS Color 4 formats (e.g., OKLCH) as hexadecimal/named colors, ensuring that it matches the original values used; the ability for lh and rlh units to be parsed and computed correctly as lengths; the enabling of WebAssembly GC by default, which allows new languages, such as Dart or Kotlin, to run on the browser (desktop); dozens of new mobile extensions surfacing during the release cycle; and a fix for a tabs tray bug where selecting tabs could accidentally close them instead (Android).

Firefox 121 was released on December 19, 2023. Major changes included a prompt for Windows users to install the Microsoft AV1 Video Extension to enable hardware decoding support for the AV1 video codec from about:support if not already installed; support for Voice Control commands on macOS systems; a default to the Wayland compositor when available instead of XWayland for Linux users; the ability to force links to always be underlined, which can be enabled in the Browsing section of the Settings menu; the floating button in the PDF viewer to simplify deleting drawings, text, and images added in PDFs; the Firefox Debugger including a new feature: an option to disable the debugger; keyword on the current page; the unification of the focus indicator across the toolbox, which is now larger with improved contrast, featuring a white box-shadow for enhanced visibility on blue backgrounds; added support for the :has() selector, which authors to match an element that has, or "anchors", at least one element matching its relative selector; added support for the hanging and each-line keywords for the text-indent CSS property, offering more convenient paragraph layout options for styles such as bibliographies, poetry, etc.; added support for the balance keyword for the text-wrap CSS property, which can improve the appearance of short multi-line text blocks such as long headings or captions by harmonizing the line lengths; added support for the lazy loading iframes, which are only loaded when visible, so non-critical iframes can load later when needed to speed up initial page loads, reduce initial network usage, etc.; added support for tail call elimination in WebAssembly language to improve support for functional languages (desktop); expanded extension capabilities by popular demand, adding new support for over 400 more extensions; the ability for private windows to protect users even better by blocking third-party cookies and storage of content trackers; Enhanced Tracking Protection custom mode including blocking of social trackers by default; a fix for a crash when copying to the clipboard; a fix for a crash when the fullscreen notification was encountered; a fix for rendering issues and crashes on Google Pixel 8 and Samsung Galaxy S22 devices (Android); and various security fixes (both).

Firefox 122 was released on January 23, 2024. Major changes included new displays of images and descriptions for search suggestions when provided by the search engine; improvement in the quality of translated webpages in the translations feature; added support for creating and using passkeys stored in the iCloud Keychain on macOS; the availability of MDN Web Docs article suggestions from Firefox Suggest in the address bar for users searching for web development-related information; the line breaking rules of Web content matching the Unicode Standard, improving Web Browser compatibility for line breaking; a new .deb package for Linux users on Ubuntu, Debian, and Linux Mint; a fix for keyboard navigation in Inspector Rules view; enabled offset-position property which is useful for most of the offset-path values; added support for ray(), basic-shape and coord-box to the offset-path CSS property; added support for rect() and xywh() basic shapes on clip-path and offset-path CSS properties; added support for animating the SVG viewBox attribute using SMIL by animations; LargestContentfulPaint API, which provides timing information about the largest image or text paint before users interact with a web page; added support for hr in select, allowing websites to easily use separators inside a select element; added support for the showpicker method on <select> elements; the fallback URL parser for unknown schemes changed to DefaultURI, improving specification adherence and web compatibility; the ArrayBuffer.prototype.transfer proposal methods, which enables transferring ownership of ArrayBuffer data; added support for the Screen Wake Lock API; recognition of the "webauthn" autocomplete token; the ability for scripts to store cacheAPI data in Private Browsing mode; the tainting of filters that use currentColor as an input to further protect user privacy; Uneven Level Protection Forward Error Correction (ULPFEC) turned on by default (desktop); added default PDF reader; added support for enabling Global Privacy Control; the OS version being reported as "Android 10" for Android's User-Agent string to reduce user fingerprinting information and the risk of some website compatibility issues (Adnroid); and various security fixes (both).

Firefox 123 was released on February 20, 2024. Major changes included the integration of search into Firefox View, allowing the user to search through all of the tabs on each of the section subpages - Recent Browsing, Open Tabs, Recently Closed Tabs, Tabs from other devices, or History; the Web Compatibility Reporting Tool; the ability to translate text in tooltips (i.e. titles) and text displayed in form controls (i.e. placeholder) when translating web pages; the implementation of the address bar settings in the Firefox Settings' Search section; the support for the Network Monitor for saving a response body to disk through the Save Response As context menu item; the implementation of linearRGB interpolation for SVG gradients, as well as the existing sRGB interpolation; the SVG content falling back to use the default replaced element values of 300px width and 150px height and the feImage no longer failing to render; added support for Early Hints by enabling Preload and Modulepreload support; the application of audio echo cancellation to microphone inputs when the audio output is redirected to another device with setSinkId(); added support for declarative ShadowDOM, providing developers greater flexibility and improved ergonomics when working with ShadowDOMs directly within HTML (desktop); the report of ARM64 Linux's CPU architecture as "x86_64" and ARM and x86 Android's as "armv81" in the User-Agent string and the navigator.platform and navigator.oscpu Web APIs (Android); improved PGO optimizations for macOS ARM64 and Android; the off-main-thread canvas on macOS, Linux and Android; and various security fixes (both).

Firefox 124 was released on March 19, 2024. Major changes included the caret browsing mode now working in the PDF viewer; open tabs now being sorted by either recent activity (which is set by default) or tab order in Firefox View; the population of the Windows taskbar jump list more efficiently, which should allow for a smoother overall browsing experience; the use of the macOS fullscreen API for all types of fullscreen windows; the expansion of Qwant's availability to all languages in the France region along with Belgium, Italy, the Netherlands, Spain, and Switzerland; various security fixes; added support for AbortSignal.any; the ability to use HTTP(S) and relative URLs when creating WebSockets (desktop); the enabling of Pull to Refresh by default; and added support for HTML drag and drop API (which accepts plain text or HTML text by drop operation from external applications) when using a mouse (Android).

Firefox 125 was released for Android, while Firefox 125.0.1 was released for desktop, both on April 16, 2024. Major changes included added support for the AV1 codec for Encrypted Media Extensions (EME), enabling higher-quality playback from video streaming providers; added support for text highlighting for the PDF viewer; the display of pinned tabs in the Open tabs section for Firefox View; the prompt for U.S. and Canadian users to save their addresses upon submitting an address form, allowing the browser to autofill stored address information in the future; the ability to more proactively block downloads from URLs that are considered to be potentially untrustworthy; the URL Paste Suggestion feature providing a convenient way for users to quickly visit URLs copied to the clipboard in the browser address bar; the ability for users of tab-specific Container add-ons to search in the Address Bar for tabs that are open in different containers; an option to enable Web Proxy Auto-Discovery (WPAD) while configured to use system proxy settings; the tab key now only reaching the first option rather than cycling through all available options in a group of radio buttons where no option is selected, and the ability for the arrow keys to navigate between options as they do when there is a selected option, making keyboard navigation more efficient and consistent; the option to disable the Pause Debugger Overlay that appears over the page content when the debugger pauses JavaScript execution; a new drop-down menu button at the bottom of the source view in the Debugger panel, specifically designed for Source Map related actions; added support for the popover global attribute used for designating an element as a popover element; the enabling of WebAssembly multi-memory by default; added support for Unicode Text Segmentation to JavaScript; added support for contextlost and contextrestored events on HTMLCanvasElement and OffscreenCanvas to allow user code to recover from context loss with hardware accelerated 2D canvas; added support for the navigator.clipboard.readText() web API; added support for the content-box and stroke-box keywords of the transform-box CSS property; the align-content property working in block layout, allowing block direction alignment without needing a flex or grid container; removal of support for SVGAElement.text in favor of the more widely-implemented SVGAElement.textContent method (desktop); recognition of the theme selection (Dark, Light, Follow Device) setting on Custom Tabs; various improvements to the "Logins and Passwords" settings menu; removal of "Open in App" button when the browser is set as the default PDF Viewer; removal of the variant and extension of BCP47 in the Accept-Language header of HTTP requests for better interoperability with other browsers (Android); and various security fixes (both).

Firefox 126 was released on May 14, 2024. Major changes included the Copy Without Site Tracking option that can now remove parameters from nested URLs, and includes expanded support for blocking over 300 tracking parameters from copied links, including those from major shopping websites; support for Content-encoding: zstd (zstandard compression), which is an alternative to broti and gzip compression for web content, and can provide higher compression levels for the same CPU used, or conversely lower server CPU use to get the same compression; the addition of the Catalan language; enabled AV1 hardware decode acceleration on macOS for M3 Macs; added telemetry to create an aggregate count of searches by category to broadly inform search feature development; the temporary disabling of the URL Paste Suggestion feature while a potential performance issue was being investigated; an option to disable/enable the Developer Tools' split console feature; the implementation of URL.parse(); the enabling of the CSS zoom property by default following a lot of web compatibility and standardization work in the CSSWG; added support for CSS Custom :state() and CustomStateSet pseudo-classes; added support for Screen Wake Lock API; added support for IDBFactory.databases for enumeration of IndexedDB databases (desktop); a fix for issues with the address toolbar on devices with foldable screens; the renaming of "Add-ons" settings to "Extensions" (Android); and various security fixes (both).

Firefox 127 was released on June 11, 2024. Major changes included setting the browser to auto-launch, which optimizes efficiency in our browser-centric digital routines, eliminating manual startup delays and facilitating immediate web access; the enabling of DNS prefetching for HTTPS documents via the rel="dns-prefetch" link hint; the Close duplicate tabs command available from the List all tabs widget in the tab bar or a tab context menu; the ability to autimatically upgrade <img>, <audio>, and <video> elements from HTTP to HTTPS if they are embedded within an HTTPS page; the requirement of a device sign-in when accessing and filling stored passwords in the Password Manager about:logins page in macOS and Windows; the report of the CPU architecture for 32-bit x86 Linux as x86_64 in the User-Agent string and navigator.platform and navigator.oscpu Web APIs; links and other focusable elements now tab-navigable by default on macOS, instead of following macOS' "Keyboard navigation" setting; support of the Screenshots feature for taking screenshots of file types like SVG, XML, and more as well as various about: pages within the browser; the screenshot tool being more accessible to everyone by implementing new keyboard shortcuts and adding theme compatibility and High Contrast Mode (HCM) support; improvement of performance for capturing large screenshots; the enabling of navigator.clipboard.read()/write() (desktop); a new Passwords item added to the three-dot menu; numpad on a physical keyboard being used to commit URLs entered in the toolbar; Web content translation; improvement of compiler optimization settings, improving responsiveness, reducing page load times, and extending battery life; the Recently Saved section home page changed into the Bookmarks section (Android); and various security fixes (both).

Firefox 128 through 139

Firefox 128 and Firefox 128 ESR were released on July 9, 2024. Major changes included the ability to translate selections of text and hyperlinked text to other languages from the context menu; the ability to show recent searches or currently trending searches when U.S. and Canadian users open the Address Bar to get them back to their previous search session or inspire the next one; a simpler and more unified dialog for clearing user data, which provides insights into the site data size corresponding to the selected time range in addition to streamlining data categories; added support for playback of protected content from streaming sites like Netflix while in Private Browsing mode; added support for the experimental Privacy Preserving Attribution API, which provides an alternative to user tracking for ad attribution; microphone capture through getUserMedia now using system-provided voice processing when applicable, improving audio quality on macOS; the Saraiki (skr) language; the proxy of DNS by default when using SOCKS v5, avoiding leaking DNS queries to the network when using SOCKS v5 proxies; added support for rendering more text/* file types inline, rather than requiring them to be downloaded to be viewed; the renewal of the root certificate used to verify add-ons and signed content to avoid upcoming expiration; the display of CSS rules specificity in a tooltip when hovering a CSS rule selector in the Inspector Rules view; the ability for the Inspector panel to flag a custom property declaration as invalid when the value does not match the registered custom property definition; improvements to Inactive CSS displaying a warning when column-span is used on elements outside of multi-column containers and when properties only applying to replaced elements are used on non-replaced elements; added support for Resizeable ArrayBuffers and Growable SharedArrayBuffers in SpiderMonkey; the ability of the setCodecPreferences method to allow applications to disable the negotiation of specific codecs (including RTX/RED/FEC), and an application to cause a remote peer to prefer the codec that appears first in the list for sending; the change of the Accept header for images and documents to better align with the Fetch standard and other browsers; added support for @property and the CSS properties-and-values API; the provision of a new bytes() method on many objects like Request/Response and Blob that provides a convenient way of getting an Uint8Array typed array (desktop); the ability for users of Android 14 and up to create and use Passkeys in third-party Passkey management applications; the "confirm password" field filled in when suggesting a password; selecting "approximate location" now working when prompted or geolocation permission; the browser no longer forcing the display into landscape mode when entering full-screen mode with an audio element playing, or forcing the page to open back in the app if "ask before opening" is set when sharing a link from an app (Android); and various security fixes (both).

Firefox 129 was released on August 6, 2024. Major changes included the addition of an enhanced Text and Layout menu in Reader View with new options for character spacing, word spacing, and text alignment; a Theme menu with additional Contrast and Gray options, with the ability for the user to select custom colors for text, background, and links from the Custom tab; the display of a Tab preview when hovering the mouse over background tabs, making it easier to locate the desired tab without needing to switch tabs; the replacement of HTTP with HTTPS as the default protocol in the address bar on non-local sites; added support for multiple languages in the same document spoken in macOS VoiceOver; Address Autofill for users in France and Germany; added support for more inactive CSS warnings, including cases where the resize and float properties used incorrectly, box-sizing is used on elements that ignore width/height, and table-related CSS properties are not on table-related elements; the ability for the Network Blocking feature in the Network panel to block HTTP requests in addition to blocking responses; the Rules side panel in the Inspector panel displaying @starting-style rules, as well as a tooltip for the var() function, indicating the @starting-style CSS custom properties value; the Rules side panel showing the impact of invalid at computed-value time custom property declarations in the computed panel; added support for querying the encryption key system config in mediaCapabilities.decodingInfo() API; added support for Float16Array typed arrays along with new DataView methods for reading and setting Float16 values, and a Math.f16round() static method that can be used to round numbers to 16 bits; added support for @starting-style, which allows to define styles that are applied to an element when it is first rendered, enabling transitions on elements that are added to the DOM or that have their display type changed from none to another value; added support for the transition-behavior CSS property; added support for the textInput event; added support for DNS lookup of HTTPS Resource Records (RR) with the native DNS resolver, increasing HTTPS coverage and facilitating the use of Encrypted Client Hello (ECH) if present in HTTPS RR (desktop); the availability of downloading languages to facilitate offline Translations (Android); the resolution of HTTPS DNS records with the operating system's DNS resolver on specific platforms; and various security fixes (both).

Firefox 130 was released on September 3, 2024. Major changes included translating selected text portions to different languages after a full-page translation; an easy way to try experimental features with a new Firefox Labs page in Settings, such as the AI Chatbot feature letting users add the chatbot of their choice to the sidebar for quick access as they browse, and the Picture-in-Picture auto-open experiment enabling PiP on active videos when switching tabs; the enabling of overscroll animations as the default behavior for scrollable areas on Linux; a fix for an issue where Copy and Paste context menu items intermittently were not enabled when expected; WebCryptoAPI now supporting Curve25519 primitives (Ed25519 signatures and X25519 key generation); the Web Codecs API being enabled on desktop platforms, allowing low-level access to audio and video encoders and decoders (desktop); improved page load performance by allowing more resources to be downloaded simultaneously; the availability of the password generator feature, which gives users the opportunity to use a strong, random, automatically generated password whenever they are creating new accounts (Android); various security fixes; and added support for the Catalan, Croatian, Czech, Danish, Indonesian, Latvian, Lithuanian, Romanian, Serbian, Slovak, and Vietnamese languages (both).

Firefox 131 was released on October 1, 2024. Major changes included an offer to temporarily remember when users grant permissions to sites (e.g. geolocation), to be removed either after one hour or when the tab is closed; the display of a tab preview when hovering the mouse over background tabs, making it easier to locate the desired tab without needing to switch tabs; the ability to take into consideration languages previously used for translations when suggesting a default translation language; the re-introduction of the ability to navigate to the search engine home page when the search bar is empty by using shift-enter/shift-click; the Tab overview (List all tabs) menu's new, refreshed icon; the removal of SVGGraphicsElement.nearestViewportElement and SVGGraphicsElement.farthestViewportElement as part of the ongoing updates to SVG 2; added support for text fragments, which allows users to link directly to a specific portion of text in a web document via a special URL fragment; the rejection of SameSite=None cookies when there is no Secure attribute included; added support for Cookies Having Independent Partitioned State (CHIPS), allowing developers to opt a cookie into storage partitioned per top-level site (desktop); the ability for users to enable protection against suspected fingerprinters using custom and strict enhanced tracking protection options; the ability to save bookmarks in the folder where users last added a bookmark, instead of defaulting to the top-level bookmarks folder (Android); various security fixes; and support for the Swedish language by translation.

Firefox 132 was released on October 29, 2024. Major changes included Microsoft PlayReady encrypted media playback being rolled out to select sites on Windows; Wide Color Gamut WebGL for Windows and macOS; WebRender hardware accelerated rendering enabled for most SVG filter primitives, improving performance for certain graphics-heavy content; added support for macOS' new screen and window sharing selection features on macOS 15 and later; enhanced macOS session resume feature and an automatic relaunch of the browser if it was open before a system restart, like after an OS update; the ability to block third-party cookie access when Enhanced Tracking Protection's Strict mode is enabled; the blocking of HTTP-favicons if they can not be received over HTTPS instead; the Copy Without Site Tracking grayed out when no known tracking parameters are found within the link; the addition of more tracking parameter support for websites such as LinkedIn and Shopee; the removal of support for HTTP/2 Push due to compatibility issues with various sites; console logging in service workers being functional again; restored support for debugging remote devices via USB; added support for a post-quantum key exchange mechanism for TLS 1.3 (mlkem768x25519) which secures communications against advanced / long-term threats; added support for Certificate Compression which reduces the size and increases the speed of a TLS handshake; text directionality computation updated to follow the latest model defined in the HTML specification, improving interoperability with other web browsers; the availability of the requestVideoFrameCallback() method on the HTMLVideoElement interface, which enables developers to perform efficient operations on each video frame; the getCapabilities method allowing applications to gather the media capabilities supported for the live MediaStreamTrack; the fetchpriority attribute enabling web developers to optimize resource loading by specifying the relative priority of resources to be fetched by the browser; the disabling of the heuristic granting storage access for some window openings (desktop); the address bar's default position moved to the top of the screen for new users; the use of resizes-visual as the default value of the interactive-widget property of the viewport <meta> element (Android); and various security fixes (both).

Firefox 133 was released on November 26, 2024. Major changes included a new anti-tracking feature, Bounce Tracking Protection, which is now available in Enhanced Tracking Protection's "Strict" mode; the sidebar to view tabs from other devices that can now open via the Tab overview menu; the enabling of GPU-accelerated Canvas2D by default on Windows providing a performance improvement; the "Picture-in-Picture: auto-open on tab switch" feature from Firefox Labs behaving more reliably across a wider range of sites, automatically opening relevant videos while ignoring others; the adjustment of the "expire" attribute value by adding the difference between the server and local times when server time is available; added support for the keepalive option in the Fetch API, which allows developers to make HTTP requests that can continue to run even after the page is unloaded, such as during page navigation or closing; added support for the Permissions API in Worker Context; the dispatch of beforetoggle events just before a dialog opens and toggle events after the dialog closes, matching the behavior of popovers; the availability of methods on UInt8Array to convert to and from Base64 and hexadecimal encodings, which is an implementation of a Stage 3 TC39 proposal; added support for image decoding as part of the WebCodecs API (desktop); the enabling of desktop mode browsing by default for large devices; the treatment of text copied to the clipboard in Private Browsing mode as sensitive content and the masking of clipboard notifications for added privacy on Android 13 and later (Android); and various security fixes (both).

Firefox 134 was released on January 7, 2025. Major changes included added support for touchpad hold gestures on Linux; added support for hardware-accelerated playback of HEVC video content on Windows; the expansion of Ecosia's availability to all languages in the German region along with Austria, Belgium, Italy, Netherlands, Spain, Sweden and Switzerland; the ability to follow the model HTML specification for transient user activation more closely, which makes popup blocking less strict in cases where previous versions were overly aggressive, reducing erroneous blocking prompts; a refreshed New Tab layout being rolled out to users in the US and Canada, featuring a repositioned logo and weather widget to prioritize Web Search, Shortcuts, and Recommended Stories at the top; improved support for debugging web extensions, such as automatically reloading the web extension's source code in the Debugger when the extension is reloaded; Debugger log-point values automatically converted into profiler markers, making it easy to add information to the marker timeline directly from the Debugger; the Network panel displaying information about Early Hints, including a dedicated indicator for the 103 HTTP status code in the user interface (desktop); and various security fixes (both).

CPU architectures

x86 family

Native 64-bit builds are officially supported on Linux, macOS, and Windows (since version 42).

Mozilla made Firefox for 64-bit Linux a priority with the release of Firefox 4, labeling it as tier 1 priority. Since being labeled tier 1, Mozilla has been providing official 64-bit releases for its browser for Linux. Vendor-backed 64-bit support has existed for Linux distributions such as Novell/SUSE Linux, Red Hat Enterprise Linux, and Ubuntu prior to Mozilla's 64-bit support, even though vendors were faced with the challenge of having to turn off the 64-bit JIT compiler due to its instability prior to Firefox 4.

The official releases of Firefox for macOS are universal builds that include both 32-bit and 64-bit versions of the browser in one package, and have been this way since Firefox 4. A typical browsing session uses a combination of the 64-bit browser process and a 32-bit plugin process, because some popular plugins still are 32-bit. As of April 19, 2017, Firefox 53 has dropped support for 32-bit macOS.

The 32-bit and 64-bit versions of Windows can be used to run 32-bit Firefox. In late 2012, Mozilla announced 64-bit Windows builds would be stopped but later reversed the decision. As of April 2015, 64-bit Windows builds are available as 38.0 Beta and newer. 64-bit builds for Windows are officially supported as of November 2015 with the release of Firefox 42.

Other CPU architectures

Besides x86, Firefox also supported other CPU architectures including ARMv7, SPARC, PowerPC, and 68k on different tiers. Mozilla terminated support for PowerPC-based Macintosh computers with Firefox 3.6, but a third-party project known as TenFourFox ported several newer versions of Firefox, the latest being based on Firefox 45 ESR.

Mozilla Firefox timeline


Release compatibility

Operating system Latest stable version Support status
Windows 10 v1709 and later, Server 2025 Current stable version: 134.0 (ARM64) Edit this on Wikidata 2019–
Old version, yet still maintained: 128.6.0esr (ARM64) Edit this on Wikidata
10 and later, Server 2016 and later Current stable version: 134.0 (x64) Edit this on Wikidata 2015–
Old version, yet still maintained: 128.6.0esr (x64) Edit this on Wikidata
Current stable version: 134.0 (IA-32) Edit this on Wikidata
Old version, yet still maintained: 128.6.0esr (IA-32) Edit this on Wikidata
7, Server 2008 R2, 8, Server 2012,
8.1 and Server 2012 R2 		Old version, yet still maintained: 115.19.0esr (x64) 2015–2025
Old version, yet still maintained: 115.19.0esr (IA-32) 2009–2025
XP, Server 2003,
Vista and Server 2008 		Old version, no longer maintained: 52.9.0esr (IA-32) 2004–2018
2000 Old version, no longer maintained: 10.0.12esr 2004–2013
Old version, no longer maintained: 12.0 2004–2012
NT 4.0 (IA-32), 98 and Me Old version, no longer maintained: 2.0.0.20 2004–2008
95 Old version, no longer maintained: 1.5.0.12 2004–2007
macOS 11 (ARM64) and later Current stable version: 134.0 Edit this on Wikidata 2020–
Old version, yet still maintained: 128.6.0esr Edit this on Wikidata
10.15 (x64) and later Current stable version: 134.0 Edit this on Wikidata 2019–
Old version, yet still maintained: 128.6.0esr Edit this on Wikidata
10.12–10.14 Old version, yet still maintained: 115.19.0esr 2016–2025
10.9–10.11 Old version, no longer maintained: 78.15.0esr 2013–2021
10.6–10.8 Old version, no longer maintained: 45.9.0esr 2009–2017
Old version, no longer maintained: 48.0.2 2009–2016
10.5 (IA-32 and x64) Old version, no longer maintained: 10.0.12esr 2007–2013
Old version, no longer maintained: 16.0.2 2007–2012
10.4 (IA-32 and PPC)–10.5 (PPC) Old version, no longer maintained: 3.6.28 2005–2012
10.2–10.3 Old version, no longer maintained: 2.0.0.20 2004–2008
10.0–10.1 Old version, no longer maintained: 1.0.8 2004–2006
Linux (X11/Wayland) Current stable version: 134.0 (x64) Edit this on Wikidata 2011–
Old version, yet still maintained: 128.6.0esr (x64) Edit this on Wikidata
Current stable version: 134.0 (IA-32) Edit this on Wikidata 2004–
Old version, yet still maintained: 128.6.0esr (IA-32) Edit this on Wikidata
Legend:Old version, not maintainedOld version, still maintainedLatest versionLatest preview versionFuture release

Notes

  • In March 2014, the Windows Store app version of Firefox was cancelled, although there is a beta release.
  • SSE2 instruction set support is required for 49.0 or later for Windows and 53.0 or later for Linux, IA-32 support only applies to superscalar processors.
  • The x64 build for Windows (introduced with Firefox 43) was exclusive to Windows 7 and later. All previous versions of Windows have to use the IA-32 build.
Operating system Latest stable version Support status
Android
(including Android-x86) 		5.0 and later Current stable version: 134.0 (x64) Edit this on Wikidata 2018–
Current stable version: 134.0 (ARM64) Edit this on Wikidata 2017–
Current stable version: 134.0 (IA-32) Edit this on Wikidata 2014–
Current stable version: 134.0 (ARMv7) Edit this on Wikidata
4.1–4.4 Old version, no longer maintained: 68.11.0 (x64) 2018–2020
Old version, no longer maintained: 68.11.0 (IA-32) 2013–2020
Old version, no longer maintained: 68.11.0 (ARMv7) 2012–2020
4.0 Old version, no longer maintained: 55.0.2 (IA-32) 2013–2017
Old version, no longer maintained: 55.0.2 (ARMv7) 2011–2017
3.0–3.2 Old version, no longer maintained: 45.0.2 (ARMv7) 2011–2016
2.3 Old version, no longer maintained: 47.0 (ARMv7)
2.2–4.3 Old version, no longer maintained: 31.3.0esr (ARMv6) 2012–2015
2.2 Old version, no longer maintained: 31.0 (ARMv7) 2011–2014
2.1 Old version, no longer maintained: 19.0.2 (ARMv6) 2012–2013
Old version, no longer maintained: 19.0.2 (ARMv7) 2011–2013
2.0 Old version, no longer maintained: 6.0.2 (ARMv7) 2011
Firefox OS 2.2 Old version, no longer maintained: 35/36/37 2015
2.1 Old version, no longer maintained: 33/34 2014–2015
2.0 Old version, no longer maintained: 31/32
1.4 Old version, no longer maintained: 30 2014
1.3 Old version, no longer maintained: 28
1.2 Old version, no longer maintained: 26 2013
1.1 Old version, no longer maintained: 18
Maemo Old version, no longer maintained: 7.0.1 2010–2011
Windows Mobile 6.x Old version, no longer maintained: 1.0a3 N/A
Legend:Old version, not maintainedOld version, still maintainedLatest versionLatest preview versionFuture release
Notes
  • Firefox for iOS is not listed in this table as its version numbers would be misleading. Prior to version 96 it used version numbers that do not correspond to any of the other Firefox versions. Those share a core component, the Gecko rendering engine, and track its version numbers, whereas the version for the iOS operating system uses the operating system's rendering engine (WebKit), rather than Mozilla's (Gecko).
Operating system Latest stable version Support status
Solaris 11 Old version, yet still maintained: 128.5.0esr (x64, SPARC V9) 2011–
10 and OpenSolaris Old version, no longer maintained: 52.9.0esr (IA-32, x64, SPARC V9) 2005–2018
8–9 Old version, no longer maintained: 2.0.0.20 (IA-32, SPARC V9) 2004–2008
AIX 7.1 and 7.2 Old version, no longer maintained: 3.6.25 (POWER) N/A
HP-UX 11i v2–v3 Old version, no longer maintained: 3.5.9 (IA-64, PA-RISC) N/A
FreeBSD (Tier 1) 13 and later Current stable version: 134.0 (x64, ARM64) 2021–
Old version, yet still maintained: 128.6.0esr (x64, ARM64)
12 Old version, no longer maintained: 121.0 (IA-32) 2018–2024
Old version, no longer maintained: 115.6.0esr (IA-32)
OpenBSD -stable 7.6 Current stable version: 134.0 (x64, ARM64, RISC-V) 2024–
Old version, yet still maintained: 128.6.0esr (x64, ARM64, RISC-V)
6.9 Old version, no longer maintained: 88.0.1 (IA-32) 2021
Old version, no longer maintained: 78.14.0esr (IA-32)
5.8 Old version, no longer maintained: 38.7.1esr (PPC) 2015–2016
5.7 Old version, no longer maintained: 31.6.0esr (SPARC V9) 2015
4.7 Old version, no longer maintained: 3.5.10 (Alpha) 2010
-release 5.8 Old version, no longer maintained: 39.0.3 (PPC) N/A
5.4 Old version, no longer maintained: 3.6.28 (Alpha)
4.7 Old version, no longer maintained: 3.0.18 (ARM)
Legend:Old version, not maintainedOld version, still maintainedLatest versionLatest preview versionFuture release

See also

References

  1. "Top 12 Desktop, Mobile, Tablet & Console Browser Versions on Dec 2024". StatCounter Global Stats.
  2. "Top 9 Desktop, Mobile, Tablet & Console Browsers on Dec 2024". StatCounter Global Stats.
  3. Kothari, Ritu; Or, Yan. "Moving Firefox to a faster 4-week release cycle". Mozilla Hacks. Archived from the original on February 20, 2020. Retrieved February 26, 2020.
  4. ^ Paul, Ryan (March 18, 2011). "Mozilla outlines 16-week Firefox development cycle". Ars Technica. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  5. Paul, Ryan (February 14, 2011). "Is Mozilla's 2011 roadmap unrealistically ambitious?". Ars Technica. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  6. Siegler, M. G. (April 13, 2011). "Mozilla Introduces Aurora, The Pre-Beta, Post-Nightly Firefox — It's Their "Dev" Build". TechCrunch. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  7. ^ Anthony, Sebastian (April 18, 2017). "Firefox kills off Aurora channel to speed up release of new features". Ars Technica. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  8. "How to Use Firefox's New 'Aurora' Release Channel". Wired. April 14, 2011. ISSN 1059-1028. Retrieved April 22, 2023.
  9. Kingsley-Hughes, Adrian (September 22, 2011). "Mozilla attempts to appease enterprise users with talk of 42-week Firefox release cycle". ZDNET. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  10. Protalinski, Emil (April 17, 2017). "Mozilla kills Firefox Aurora channel, builds will move directly from Nightly to Beta". VentureBeat. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  11. Kothari, Ritu; Or, Yan (September 17, 2019). "Moving Firefox to a faster 4-week release cycle". Mozilla. Archived from the original on May 21, 2023. Retrieved April 22, 2023.
  12. Cimpanu, Catalin (September 17, 2019). "Mozilla to release a new Firefox version every four weeks starting next year". ZDNET. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  13. Protalinski, Emil (January 7, 2020). "Firefox 72 arrives with fingerprinting blocked by default, Picture-in-Picture on macOS and Linux". VentureBeat. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  14. Lardinois, Frederic (March 4, 2021). "Google speeds up its release cycle for Chrome". TechCrunch. Archived from the original on April 22, 2023. Retrieved April 22, 2023.
  15. Wong, Dennis (June 18, 2023). "Firefox 5 released". Neowin. Retrieved May 4, 2023.
  16. Bright, Peter (June 27, 2011). "Firefox update policy: the enterprise is wrong, not Mozilla". Ars Technica. Archived from the original on May 9, 2012. Retrieved November 19, 2013.
  17. "Firefox Release Tracking". Mozilla Wiki. Mozilla. Archived from the original on May 4, 2012. Retrieved April 21, 2012.
  18. ^ "Classic Compact Options". addons.mozilla.org . Mozilla. Archived from the original on May 2, 2012. Retrieved February 1, 2012.
  19. "Mozilla Firefox 6 Release Notes". Mozilla. August 16, 2011. Archived from the original on March 6, 2014. Retrieved February 1, 2012.
  20. Cunningham, Andrew. "Firefox 7.0 Released". Anandtech. Archived from the original on May 4, 2023. Retrieved May 4, 2023.
  21. Nethercote, Nicholas (August 9, 2011). "Firefox 7 is lean and fast". Archived from the original on June 2, 2012. Retrieved August 17, 2011.
  22. "Performance/MemShrink". Mozilla. Archived from the original on September 1, 2019. Retrieved August 11, 2011.
  23. Mello, John P. (August 19, 2011). "Firefox 7 Beta Puts Priority on Performance". PC World. Archived from the original on January 30, 2012. Retrieved April 7, 2012.
  24. Brinkmann, Martin (September 30, 2011). "Mozilla Rushes Out Firefox 7.0.1 Update". Ghacks. Archived from the original on April 2, 2013. Retrieved May 4, 2013.
  25. "browser.urlbar.trimURLs". MDN web docs. Mozilla. Archived from the original on April 22, 2019. Retrieved January 31, 2019.
  26. "Mozilla Firefox 8.0 Release Notes". Mozilla. November 8, 2011. Archived from the original on June 18, 2018. Retrieved November 10, 2011.
  27. "Firefox 8 cracks down on add-ons". cnet. November 9, 2011. Archived from the original on September 17, 2021. Retrieved September 17, 2021.
  28. "Cascaded Session Restore + a Hidden Bonus". zpao.com. September 17, 2010. Archived from the original on June 19, 2024. Retrieved June 19, 2024.
  29. "max_concurrent_tabs is Dead; Long Live restore_on_demand". zpao.com. August 17, 2011. Archived from the original on June 19, 2024. Retrieved June 19, 2024.
  30. Burgess, Brian (December 20, 2011). "Firefox 9.0 Now Available for Download". groovyPost. Archived from the original on January 18, 2024. Retrieved May 4, 2023.
  31. ^ "Mozilla Firefox 10.0 Release Notes". Mozilla. January 31, 2012. Archived from the original on June 19, 2018. Retrieved January 31, 2012.
  32. "Mozilla Firefox Extended Support Release Proposal". Mozilla. January 18, 2012. Archived from the original on January 19, 2012. Retrieved January 25, 2012.
  33. zebra148 (February 2, 2012). "Firefox 10 eases add-on updates but no Android yet". ZDNet. Archived from the original on December 31, 2018. Retrieved May 5, 2019.{{cite web}}: CS1 maint: numeric names: authors list (link)
  34. Paul, Ryan (January 31, 2012). "Firefox 10 arrives with new dev tools and full-screen API". Ars Technica. Archived from the original on December 31, 2018. Retrieved May 5, 2019.
  35. Scott, Justin. "Add-ons default to compatible". Mozilla. Archived from the original on October 1, 2019. Retrieved April 21, 2012.
  36. "Delivering a Mozilla Firefox Extended Support Release". January 10, 2012. Archived from the original on April 17, 2012. Retrieved February 4, 2012.
  37. "Mozilla Firefox ESR Overview". Mozilla Foundation. Archived from the original on March 7, 2012. Retrieved October 2, 2012.
  38. "3D view – Firefox Developer Tools | MDN". developer.mozilla.org. Archived from the original on September 26, 2021. Retrieved September 27, 2021. From Firefox 47 onwards, 3D view is no longer available.
  39. Lowe, Alistair (March 14, 2012). "Mozilla launches Firefox 11, now with Chrome migration". HEXUS.net. Archived from the original on January 22, 2013. Retrieved June 20, 2013.
  40. "Mozilla Firefox 11 test plan". Mozilla. Archived from the original on May 5, 2012. Retrieved March 13, 2012.
  41. "Firefox 11 Release Notes". Mozilla. Archived from the original on March 14, 2012. Retrieved March 13, 2012.
  42. "What is the Mozilla Maintenance Service?". Mozilla Foundation. Archived from the original on September 30, 2019. Retrieved October 4, 2012.
  43. "Aurora 12 is out – improvements and updated Developer Tools". Mozilla. February 3, 2012. Archived from the original on May 10, 2012. Retrieved May 10, 2012.
  44. "Mozilla Firefox 12 test plan". Mozilla. Archived from the original on May 6, 2012. Retrieved March 13, 2012.
  45. "Firefox 12 Release Notes". Mozilla. Archived from the original on March 21, 2012. Retrieved March 13, 2012.
  46. "Firefox 3.6 official support to end Tuesday". Neowin. Archived from the original on April 23, 2012. Retrieved April 22, 2012.
  47. "End of Firefox Support for Windows 2000". MozillaZine Weblogs. January 27, 2012. Archived from the original on September 4, 2014. Retrieved January 27, 2012.
  48. "Mozilla Firefox 13 Release Notes". Mozilla. June 5, 2012. Archived from the original on July 12, 2014. Retrieved June 6, 2012.
  49. "New Tab Page". Mozilla. Archived from the original on October 6, 2019. Retrieved March 13, 2012.
  50. "Home Tab". Mozilla. Archived from the original on October 5, 2019. Retrieved March 13, 2012.
  51. "Test Plan Firefox 13". Mozilla. Archived from the original on April 20, 2014. Retrieved March 13, 2012.
  52. "User profile reset/cleaner". Mozilla. Archived from the original on May 1, 2012. Retrieved March 13, 2012.
  53. "Tabs on Demand". Mozilla. Archived from the original on May 4, 2012. Retrieved March 13, 2012.
  54. ^ Brinkmann, Martin (July 17, 2012). "Firefox 14.0.1 available, Why there won't be a Firefox 14.0 release". ghacks. Archived from the original on July 18, 2012. Retrieved July 17, 2012.
  55. "Hang detector and reporter". Mozilla. Archived from the original on May 4, 2012. Retrieved March 13, 2012.
  56. "Opt-in activation for plugins". Mozilla. Archived from the original on April 13, 2012. Retrieved March 15, 2012.
  57. "Debugger, Responsive Design View and more in Firefox Aurora 15". Mozilla. Archived from the original on January 17, 2019. Retrieved July 20, 2012.
  58. "Firefox Notes – Desktop: Firefox 15.0 release notes". Mozilla. August 28, 2012. Archived from the original on July 6, 2014. Retrieved October 1, 2012.
  59. "Silent Updater". Mozilla Wiki. Mozilla. Archived from the original on October 9, 2019. Retrieved March 13, 2012.
  60. Duebendorfer1, Thomas; Frei, Stefan (April 2009). "Why Silent Updates Boost Security" (PDF). techzoom.net. Archived from the original on May 1, 2012.{{cite web}}: CS1 maint: numeric names: authors list (link)
  61. Bright, Peter (January 4, 2012). "State of the Browser: Chrome closes on Firefox, IE6 dying out". Ars Technica. Archived from the original on May 4, 2012. Retrieved November 19, 2013.
  62. Keizer, Gregg. "Mozilla aims to add silent updating to Firefox 10". Computerworld. Archived from the original on January 2, 2013. Retrieved March 17, 2012.
  63. "Start-up Performance Improvements". Mozilla. Archived from the original on October 10, 2019. Retrieved April 26, 2012.
  64. "Speedy Session Restore". Mozilla Wiki. Mozilla. Archived from the original on October 10, 2019. Retrieved April 21, 2012.
  65. "Firefox Notes – Desktop: Firefox 16.0 release notes". Mozilla. October 9, 2012. Archived from the original on September 4, 2014. Retrieved March 21, 2013.
  66. "Security Vulnerability in Firefox 16". Mozilla Blog. Mozilla. October 10, 2012. Archived from the original on October 11, 2012. Retrieved October 10, 2012.
  67. "Firefox Notes – Desktop: Firefox 16.0.1 release notes". Mozilla. October 11, 2012. Archived from the original on September 4, 2014. Retrieved June 20, 2013.
  68. "Mozilla Firefox 17.0 Release notes". Mozilla. November 20, 2012. Archived from the original on September 4, 2014. Retrieved November 20, 2012.
  69. "Improved display of location bar results". Mozilla Wiki. Mozilla. Archived from the original on September 30, 2019. Retrieved July 31, 2012.
  70. "Silent update: improvements for users with incompatible add-ons". Mozilla Wiki. Mozilla. Archived from the original on October 8, 2019. Retrieved July 31, 2012.
  71. "Click-to-Play Part II". Mozilla Wiki. Mozilla. Archived from the original on July 24, 2019. Retrieved October 21, 2012.
  72. "HTML tree editor". Mozilla Wiki. Mozilla. Archived from the original on July 24, 2019. Retrieved September 7, 2012.
  73. "SpiderMonkey 17 – Mozilla | MDN". developer.mozilla.org. May 2, 2014. Archived from the original on November 10, 2014. Retrieved July 25, 2014.
  74. "Firefox Rapid Release Calendar". Mozilla Wiki. Archived from the original on December 21, 2012. Retrieved January 8, 2013.
  75. Anderson, David (September 12, 2012). "IonMonkey in Firefox 18". Mozilla Blog. Mozilla. Archived from the original on May 2, 2019. Retrieved October 12, 2012.
  76. "Mozilla Firefox 18.0 Release Notes". Mozilla. January 8, 2013. Archived from the original on June 22, 2014. Retrieved January 8, 2013.
  77. "Mozilla Firefox 19.0 Release Notes". Mozilla. February 19, 2013. Archived from the original on September 3, 2014. Retrieved February 19, 2013.
  78. "Panel-based download manager". Mozilla Wiki. Mozilla. Archived from the original on October 2, 2019. Retrieved August 28, 2012.
  79. "Firefox Notes – Desktop". Mozilla. April 2, 2013. Archived from the original on April 3, 2013. Retrieved April 2, 2013.
  80. "Mozilla Firefox 21.0 Release Notes". Mozilla. May 14, 2013. Archived from the original on May 16, 2013. Retrieved May 14, 2013.
  81. "Firefox Beta Notes – Desktop". Mozilla. May 16, 2013. Archived from the original on September 3, 2014. Retrieved June 20, 2013.
  82. "702508 – Support parsing/computing multi-line flexbox properties "flex-wrap", "align-content"". bugzilla.mozilla.org. Archived from the original on February 3, 2019. Retrieved February 27, 2014.
  83. "Firefox 23.0 Release Notes". mozilla.org. Archived from the original on March 28, 2014. Retrieved August 24, 2013.
  84. Anthony, Sebastian (August 7, 2013). "Firefox 23 finally kills the blink tag, removes ability to turn off JavaScript, introduces new logo". ExtremeTech. Archived from the original on March 29, 2014. Retrieved August 24, 2013. This contentious change derives from the fact that disabling JavaScript breaks many websites – and some people might turn off JavaScript without actually knowing what it does, resulting in unpredictable and frustrating behavior that the user might blame on Firefox. JavaScript can still be disabled via about:config or with add-ons (such as NoScript).
  85. "Firefox 24.0 release notes". Mozilla. Firefox Notes – Desktop. September 17, 2013. Archived from the original on September 18, 2013. Retrieved September 19, 2013.
  86. "SpiderMonkey 24 – Mozilla | MDN". developer.mozilla.org. May 2, 2014. Archived from the original on August 8, 2014. Retrieved July 25, 2014.
  87. Dolske, Justin (July 1, 2013). "Australis schedule update #2". Archived from the original on October 2, 2019. Retrieved August 16, 2013.
  88. "Planning 2013-11-20". Archived from the original on October 8, 2019. Retrieved January 12, 2014.
  89. "Firefox Notes – Desktop: Firefox 25.0 release notes". Mozilla. October 29, 2013. Archived from the original on August 28, 2014. Retrieved October 29, 2013.
  90. "What's New in Firefox 25". October 31, 2013. Archived from the original on November 10, 2013. Retrieved November 10, 2013.
  91. "Here's What's New In Firefox 25". October 30, 2013. Archived from the original on November 10, 2013. Retrieved November 10, 2013.
  92. "Firefox Notes – Desktop: Firefox 26.0 Release Notes". Mozilla. December 10, 2013. Archived from the original on December 10, 2013. Retrieved December 11, 2013.
  93. Leisink, Hugo (August 7, 2013). "Firefox 23 supports TLS/1.1... finally!!". Hiawatha webserver. Archived from the original on January 24, 2021. Retrieved August 6, 2024.
  94. Hornby, Taylor (August 9, 2013). "Enabling TLS v1.1 on Firefox 23". defuse.ca. Retrieved August 6, 2024.
  95. "TLS 1.2 FAQ – Knowledge Base". Archived from the original on August 31, 2021. Retrieved August 31, 2021.
  96. "Mozilla Firefox 27.0 Release Notes". Mozilla. February 4, 2014. Archived from the original on February 7, 2014. Retrieved February 14, 2014.
  97. "Mozilla Firefox 28.0 Release Notes". Mozilla. March 18, 2014. Archived from the original on March 18, 2014. Retrieved March 18, 2014.
  98. "Mozilla Firefox 29 Release Notes". Mozilla. April 29, 2014. Archived from the original on April 29, 2014. Retrieved April 29, 2014.
  99. "Firefox corrects protocol typos now". ghacks Technology News. May 5, 2014. Archived from the original on September 3, 2021. Retrieved September 3, 2021.
  100. "Mozilla Firefox 30 Release Notes". Mozilla. June 10, 2014. Archived from the original on June 13, 2014. Retrieved June 10, 2014.
  101. Brinkmann, Martin (June 10, 2014). "Firefox 30 released: Find out what is new". ghacks. Archived from the original on October 9, 2019. Retrieved June 10, 2014.
  102. "Mozilla Firefox 31 Release Notes". Mozilla. July 22, 2014. Archived from the original on July 26, 2014. Retrieved July 22, 2014.
  103. "Enterprise/Firefox/ExtendedSupport:Proposal – MozillaWiki". wiki.mozilla.org. Archived from the original on January 19, 2012. Retrieved July 25, 2014.
  104. Peers, Nick (September 2, 2014). "Firefox 32 FINAL released for desktop, shows off HTTP caching improvements and other minor tweaks". BetaNews.com. Archived from the original on September 3, 2014. Retrieved September 2, 2014.
  105. "Mozilla Firefox 32 Release Notes". Mozilla. September 2, 2014. Archived from the original on September 3, 2014. Retrieved September 2, 2014.
  106. "Platform/GFX/OffMainThreadCompositing". Archived from the original on October 1, 2019. Retrieved October 15, 2014.
  107. "Mozilla Firefox 33.0 Release Notes". Mozilla. October 14, 2014. Archived from the original on October 16, 2014. Retrieved October 14, 2014.
  108. "Mozilla Firefox 33.1 Release Notes". Mozilla. November 10, 2014. Archived from the original on October 17, 2020. Retrieved November 10, 2014.
  109. "Firefox/Decade – MozillaWiki". Archived from the original on March 24, 2018. Retrieved November 10, 2014.
  110. "Mozilla Firefox 33.1.1 Release Notes". Mozilla. November 14, 2014. Archived from the original on February 3, 2016. Retrieved November 15, 2014.
  111. "Mozilla Firefox 34.0 Release Notes". Mozilla. December 1, 2014. Archived from the original on March 14, 2023. Retrieved December 1, 2014.
  112. "Firefox – Notes (35.0) – Mozilla". Mozilla. Archived from the original on January 19, 2015. Retrieved January 13, 2015.
  113. "Mozilla Firefox 36.0 Release Notes". Mozilla. February 24, 2015. Archived from the original on February 24, 2015. Retrieved February 24, 2015.
  114. "Firefox Release Notes (37.0)". Mozilla. March 31, 2015. Archived from the original on May 9, 2015. Retrieved March 31, 2015.
  115. "Firefox Release Notes (38.0)". Mozilla. May 12, 2015. Archived from the original on May 12, 2015. Retrieved May 13, 2015.
  116. "Firefox Release Notes (39.0)". Mozilla. July 2, 2015. Archived from the original on July 3, 2015. Retrieved July 10, 2015.
  117. "Firefox Release Notes (39.0.3)". Mozilla. August 6, 2015. Archived from the original on September 4, 2015. Retrieved August 10, 2015.
  118. "Firefox version 40 set to roll with new Windows 10 features". Engadget. AOL. August 11, 2015. Archived from the original on June 20, 2019. Retrieved August 12, 2015.
  119. "Firefox Release Notes (40.0)". Mozilla. August 11, 2015. Archived from the original on August 12, 2015. Retrieved August 11, 2015.
  120. "Firefox Release Notes (41.0)". Mozilla. September 22, 2015. Archived from the original on September 23, 2015. Retrieved September 22, 2015.
  121. "Firefox Release Notes (42.0)". Mozilla. November 3, 2015. Archived from the original on November 13, 2015. Retrieved November 3, 2015.
  122. "Firefox Release Notes (43.0)". Mozilla. December 15, 2015. Archived from the original on April 26, 2019. Retrieved December 15, 2015.
  123. "Firefox Release Notes (44.0)". Mozilla. January 26, 2016. Archived from the original on March 4, 2016. Retrieved January 26, 2016.
  124. "606655 – Remove 'Ask me everytime' cookies option". bugzilla.mozilla.org. Archived from the original on January 8, 2017. Retrieved November 21, 2016.
  125. "Firefox Release Notes (45.0)". Mozilla. March 8, 2016. Archived from the original on March 17, 2016. Retrieved March 8, 2016.
  126. "Firefox Release Notes (46.0)". Mozilla. April 26, 2016. Archived from the original on April 26, 2016. Retrieved April 26, 2016.
  127. "Firefox Release Notes (47.0)". Mozilla. June 7, 2016. Archived from the original on July 19, 2016. Retrieved January 27, 2018.
  128. "Firefox Release Notes (48.0)". Mozilla. August 2, 2016. Archived from the original on September 20, 2016. Retrieved January 27, 2018.
  129. "Firefox Release Notes (49.0)". Mozilla. September 20, 2016. Archived from the original on October 22, 2016. Retrieved September 20, 2016.
  130. "Firefox Release Notes (50.0)". Mozilla. November 15, 2016. Archived from the original on January 15, 2024. Retrieved November 15, 2016.
  131. "Firefox Release Notes (51.0)". Mozilla. January 24, 2017. Archived from the original on January 25, 2017. Retrieved January 24, 2017.
  132. "Firefox Release Notes (52.0)". Mozilla. March 7, 2017. Archived from the original on March 7, 2017. Retrieved March 7, 2017.
  133. "Java plugin does not work in Firefox". java.com. Archived from the original on September 17, 2021. Retrieved September 17, 2021.
  134. "Firefox Release Notes (53.0)". Mozilla. April 19, 2017. Archived from the original on April 20, 2017. Retrieved April 19, 2017.
  135. "Firefox Release Notes (54.0)". Mozilla. June 13, 2017. Archived from the original on June 14, 2017. Retrieved June 13, 2017.
  136. "Firefox Release Notes (55.0)". Mozilla. August 8, 2017. Archived from the original on August 18, 2017. Retrieved August 8, 2017.
  137. "Firefox Release Notes (56.0)". Mozilla. September 28, 2017. Archived from the original on September 29, 2017. Retrieved September 28, 2017.
  138. ^ "2x faster and 30% less memory | Firefox Quantum Browser". Mozilla. Archived from the original on October 10, 2017. Retrieved October 9, 2017.
  139. ^ "Inside Mozilla: Firefox fights back". August 4, 2017. Archived from the original on August 3, 2017. Retrieved October 9, 2017.
  140. Dignan, Larry (August 6, 2017). "Why you should root for Mozilla's Firefox 57 in the browser wars". ZDNet. Archived from the original on December 11, 2017. Retrieved October 9, 2017.
  141. "Firefox's new rectangular tabs sweep away browser's curvy look". CNET. August 3, 2017. Archived from the original on October 9, 2017. Retrieved October 9, 2017.
  142. "Upcoming Changes in Compatibility Features". Mozilla Add-ons Blog. August 10, 2017. Archived from the original on December 26, 2017. Retrieved October 24, 2017.
  143. "Firefox Release Notes (57.0)". Mozilla. November 14, 2017. Archived from the original on November 14, 2017. Retrieved November 14, 2017.
  144. Lardinois, Frederic. "Mozilla terminates its deal with Yahoo and makes Google the default in Firefox again". TechCrunch. Archived from the original on November 14, 2017. Retrieved November 15, 2017.
  145. "Firefox Release Notes (58.0)". Mozilla. January 23, 2018. Archived from the original on January 23, 2018. Retrieved January 23, 2018.
  146. "Firefox Release Notes (59.0)". Mozilla. March 13, 2018. Archived from the original on September 9, 2019. Retrieved March 13, 2018.
  147. "Firefox Release Notes (60.0)". Mozilla. May 9, 2018. Archived from the original on May 9, 2018. Retrieved May 9, 2018.
  148. "Firefox Release Notes (60.0esr)". Mozilla. May 9, 2018. Archived from the original on May 10, 2018. Retrieved May 9, 2018.
  149. "Firefox Release Notes (61.0)". Mozilla. June 26, 2018. Archived from the original on July 3, 2018. Retrieved June 26, 2018.
  150. "Firefox 62.0, See All New Features, Updates and Fixes". Mozilla. September 5, 2018. Archived from the original on September 5, 2018. Retrieved September 5, 2018.
  151. "Firefox 63.0, See All New Features, Updates and Fixes". Mozilla. October 23, 2018. Archived from the original on October 23, 2018. Retrieved October 23, 2018.
  152. "Firefox 64.0, See All New Features, Updates and Fixes". Mozilla. December 11, 2018. Archived from the original on December 11, 2018. Retrieved December 11, 2018.
  153. "Firefox 65.0, See All New Features, Updates and Fixes". Mozilla. January 29, 2019. Archived from the original on January 30, 2019. Retrieved January 29, 2019.
  154. "Firefox 66.0, See All New Features, Updates and Fixes". Mozilla. March 19, 2019. Archived from the original on March 19, 2019. Retrieved March 21, 2019.
  155. "Firefox 67.0, See All New Features, Updates and Fixes". Mozilla. May 21, 2019. Archived from the original on May 22, 2019. Retrieved May 21, 2019.
  156. "Firefox 68.0, See All New Features, Updates and Fixes". Mozilla. July 9, 2019. Archived from the original on July 11, 2019. Retrieved July 9, 2019.
  157. "Firefox ESR 68.0esr, See All New Features, Updates and Fixes". Mozilla. July 9, 2019. Archived from the original on July 9, 2019. Retrieved July 9, 2019.
  158. "Firefox for Android 68.0, See All New Features, Updates and Fixes". Mozilla. July 9, 2019. Archived from the original on November 7, 2020. Retrieved July 9, 2019.
  159. "Firefox 69.0, See All New Features, Updates and Fixes". Mozilla. September 3, 2019. Archived from the original on September 14, 2019. Retrieved September 4, 2019.
  160. "Firefox 70.0, See All New Features, Updates and Fixes". Mozilla. October 22, 2019. Archived from the original on October 21, 2019. Retrieved October 22, 2019.
  161. "Firefox 71.0, See All New Features, Updates and Fixes". Mozilla. December 3, 2019. Archived from the original on December 3, 2019. Retrieved December 3, 2019.
  162. "Firefox 72.0, See All New Features, Updates and Fixes". Mozilla. January 7, 2020. Archived from the original on January 7, 2020. Retrieved January 7, 2020.
  163. "Firefox 73.0, See All New Features, Updates and Fixes". Mozilla. February 11, 2020. Archived from the original on February 11, 2020. Retrieved February 11, 2020.
  164. "Firefox 74.0, See All New Features, Updates and Fixes". Mozilla. March 10, 2020. Archived from the original on March 10, 2020. Retrieved March 10, 2020.
  165. van der Merwe, Thyla (March 23, 2020). "It's the Boot for TLS 1.0 and TLS 1.1". Mozilla Hacks. Archived from the original on April 4, 2020. Retrieved March 31, 2020.
  166. "Firefox 75.0, See All New Features, Updates and Fixes". Mozilla. April 7, 2020. Archived from the original on April 7, 2020. Retrieved April 7, 2020.
  167. "Firefox 76.0, See All New Features, Updates and Fixes". Mozilla. May 5, 2020. Archived from the original on May 5, 2020. Retrieved May 5, 2020.
  168. "Firefox 77.0, See All New Features, Updates and Fixes". Mozilla. June 2, 2020. Archived from the original on June 2, 2020. Retrieved June 2, 2020.
  169. "Firefox 78.0, See All New Features, Updates and Fixes". Mozilla. June 30, 2020. Archived from the original on June 30, 2020. Retrieved June 30, 2020.
  170. "Firefox ESR 78.0esr, See All New Features, Updates and Fixes". Mozilla. June 30, 2020. Archived from the original on June 30, 2020. Retrieved June 30, 2020.
  171. "Firefox 79.0, See All New Features, Updates and Fixes". Mozilla. July 28, 2020. Archived from the original on July 28, 2020. Retrieved July 28, 2020.
  172. "Firefox 80.0, See All New Features, Updates and Fixes". Mozilla. August 25, 2020. Archived from the original on August 25, 2020. Retrieved August 25, 2020.
  173. "Firefox for Android 80.0, See All New Features, Updates and Fixes". Mozilla. August 31, 2020. Archived from the original on November 2, 2020. Retrieved September 3, 2020.
  174. "Firefox 81.0, See All New Features, Updates and Fixes". Mozilla. September 22, 2020. Archived from the original on September 22, 2020. Retrieved September 22, 2020.
  175. "Firefox 82.0, See All New Features, Updates and Fixes". Mozilla. October 20, 2020. Archived from the original on November 19, 2020. Retrieved October 20, 2020.
  176. "Firefox for Android 82.0, See All New Features, Updates and Fixes". Mozilla. October 20, 2020. Archived from the original on October 27, 2020. Retrieved October 24, 2020.
  177. "Firefox 83.0, See All New Features, Updates and Fixes". Mozilla. November 17, 2020. Archived from the original on November 29, 2020. Retrieved November 17, 2020.
  178. "Firefox for Android 83.0, See All New Features, Updates and Fixes". Mozilla. November 17, 2020. Archived from the original on November 17, 2020. Retrieved November 17, 2020.
  179. "Firefox 84.0, See All New Features, Updates and Fixes". Mozilla. December 15, 2020. Archived from the original on January 26, 2021. Retrieved December 15, 2020.
  180. "Firefox 85.0, See All New Features, Updates and Fixes". Mozilla. January 26, 2021. Archived from the original on January 31, 2021. Retrieved January 26, 2021.
  181. "Firefox for Android 85.0, See All New Features, Updates and Fixes". Mozilla. January 26, 2021. Archived from the original on January 26, 2021. Retrieved January 26, 2021.
  182. "Firefox 86.0, See All New Features, Updates and Fixes". Mozilla. February 23, 2021. Archived from the original on February 22, 2021. Retrieved February 23, 2021.
  183. "Firefox for Android 86.0, See All New Features, Updates and Fixes". Mozilla. February 23, 2021. Archived from the original on February 24, 2021. Retrieved February 24, 2021.
  184. "Firefox 87.0, See All New Features, Updates and Fixes". Mozilla. March 23, 2021. Archived from the original on March 22, 2021. Retrieved March 23, 2021.
  185. "Firefox for Android 87.0, See All New Features, Updates and Fixes". Mozilla. March 23, 2021. Archived from the original on April 20, 2021. Retrieved April 20, 2021.
  186. "Firefox 88.0, See All New Features, Updates and Fixes". Mozilla. April 19, 2021. Archived from the original on April 28, 2021. Retrieved April 20, 2021.
  187. "Firefox 89.0, See All New Features, Updates and Fixes". Mozilla. June 1, 2021. Archived from the original on June 7, 2021. Retrieved June 1, 2021.
  188. "Firefox for Android 89.0, See All New Features, Updates and Fixes". Mozilla. June 1, 2021. Archived from the original on June 5, 2021. Retrieved June 1, 2021.
  189. "Firefox 90.0, See All New Features, Updates and Fixes". Mozilla. July 13, 2021. Archived from the original on July 23, 2021. Retrieved July 13, 2021.
  190. "Firefox for Android 90.0, See All New Features, Updates and Fixes". Mozilla. July 13, 2021. Archived from the original on July 13, 2021. Retrieved July 13, 2021.
  191. "Firefox 91.0, See All New Features, Updates and Fixes". Mozilla. August 10, 2021. Archived from the original on April 24, 2022. Retrieved August 10, 2021.
  192. "Firefox 91.0esr, See All New Features, Updates and Fixes". Mozilla. August 10, 2021. Archived from the original on August 10, 2021. Retrieved August 10, 2021.
  193. "Firefox for Android 91.0, See All New Features, Updates and Fixes". Mozilla. August 10, 2021. Archived from the original on August 12, 2021. Retrieved August 10, 2021.
  194. "Firefox 92.0, See All New Features, Updates and Fixes". Mozilla. September 7, 2021. Archived from the original on April 28, 2022. Retrieved September 10, 2021.
  195. "Firefox for Android 92.0, See All New Features, Updates and Fixes". Mozilla. September 7, 2021. Archived from the original on September 7, 2021. Retrieved September 10, 2021.
  196. "Firefox 93.0, See All New Features, Updates and Fixes". Mozilla. October 5, 2021. Archived from the original on October 4, 2021. Retrieved October 5, 2021.
  197. "Firefox for Android 93.0, See All New Features, Updates and Fixes". Mozilla. October 5, 2021. Archived from the original on October 5, 2021. Retrieved October 5, 2021.
  198. "Firefox 94.0, See All New Features, Updates and Fixes". Mozilla. November 2, 2021. Archived from the original on May 5, 2022. Retrieved November 2, 2021.
  199. "Firefox for Android 94.0, See All New Features, Updates and Fixes". Mozilla. November 2, 2021. Archived from the original on November 3, 2021. Retrieved November 2, 2021.
  200. "Firefox 95.0, See All New Features, Updates and Fixes". Mozilla. December 7, 2021. Archived from the original on May 12, 2022. Retrieved December 7, 2021.
  201. "Firefox for Android 95.0, See All New Features, Updates and Fixes". Mozilla. December 7, 2021. Archived from the original on December 7, 2021. Retrieved December 7, 2021.
  202. "Firefox 96.0, See All New Features, Updates and Fixes". Mozilla. January 11, 2022. Archived from the original on April 19, 2022. Retrieved January 18, 2022.
  203. "Firefox for Android 96.0, See All New Features, Updates and Fixes". Mozilla. January 11, 2022. Archived from the original on January 15, 2022. Retrieved January 18, 2022.
  204. "Firefox 97.0, See All New Features, Updates and Fixes". Mozilla. February 8, 2022. Archived from the original on April 19, 2022. Retrieved February 8, 2022.
  205. "Firefox for Android 97.0, See All New Features, Updates and Fixes". Mozilla. February 8, 2022. Archived from the original on February 8, 2022. Retrieved February 8, 2022.
  206. "Firefox 98.0, See All New Features, Updates and Fixes". Mozilla. March 8, 2022. Archived from the original on April 19, 2022. Retrieved March 8, 2022.
  207. "Firefox for Android 98.0, See All New Features, Updates and Fixes". Mozilla. March 8, 2022. Archived from the original on March 8, 2022. Retrieved March 8, 2022.
  208. "Firefox 99.0, See All New Features, Updates and Fixes". Mozilla. April 5, 2022. Archived from the original on April 28, 2022. Retrieved April 5, 2022.
  209. "Firefox for Android 99.0, See All New Features, Updates and Fixes". Mozilla. April 5, 2022. Archived from the original on April 5, 2022. Retrieved April 5, 2022.
  210. Holt, Kris (May 3, 2022). "Firefox 100 includes subtitle support for picture-in-picture video". Engadget. Archived from the original on May 5, 2023. Retrieved May 5, 2023.
  211. "Firefox 100.0, See All New Features, Updates and Fixes". Mozilla. May 3, 2022. Archived from the original on May 3, 2022. Retrieved May 3, 2022.
  212. "Firefox for Android 100.0, See All New Features, Updates and Fixes". Mozilla. May 3, 2022. Archived from the original on May 3, 2022. Retrieved May 3, 2022.
  213. "Firefox 101.0, See All New Features, Updates and Fixes". Mozilla. May 31, 2022. Archived from the original on May 3, 2022. Retrieved May 31, 2022.
  214. "Firefox for Android 101.0, See All New Features, Updates and Fixes". Mozilla. May 31, 2022. Archived from the original on May 31, 2022. Retrieved May 31, 2022.
  215. Friedrich, Greta (June 28, 2022). "Firefox 102: Mehrere Sicherheitslücken geschlossen". Heise.de (in German). Archived from the original on May 3, 2023. Retrieved May 3, 2023.
  216. Arghire, Ionut (June 29, 2022). "Firefox 102 Patches 19 Vulnerabilities, Improves Privacy". SecurityWeek. Archived from the original on May 3, 2023. Retrieved May 3, 2023.
  217. Brinkmann, Martin (July 26, 2022). "Firefox 103: improved toolbar access, performance and more". Ghacks. Archived from the original on May 4, 2023. Retrieved May 4, 2023.
  218. "Firefox 104 Now Available With Minor Improvements". www.phoronix.com. August 23, 2022. Archived from the original on May 4, 2023. Retrieved May 4, 2023.
  219. "Firefox 105.0, See All New Features, Updates and Fixes". Mozilla. September 20, 2022. Archived from the original on May 3, 2022. Retrieved September 20, 2022.
  220. "Firefox 106.0, See All New Features, Updates and Fixes". Mozilla. October 18, 2022. Archived from the original on May 3, 2022. Retrieved October 18, 2022.
  221. "Firefox 107.0, See All New Features, Updates and Fixes". Mozilla. November 15, 2022. Archived from the original on May 3, 2022. Retrieved November 16, 2022.
  222. "Firefox 108.0, See All New Features, Updates and Fixes". Mozilla. December 13, 2022. Archived from the original on May 3, 2022. Retrieved December 13, 2022.
  223. "Firefox 109.0, See All New Features, Updates and Fixes". Mozilla. January 17, 2023. Archived from the original on May 3, 2022. Retrieved January 17, 2023.
  224. Larabel, Michael (February 14, 2023). "Firefox 110 Released With Better WebGL Performance, GPU-Accelerated 2D Canvas". Phoronix. Archived from the original on May 4, 2023. Retrieved May 4, 2023.
  225. Sneddon, Joey (March 14, 2023). "Firefox 111 Released with Minor Improvements, Updated PDF.js". OMG! Ubuntu. Retrieved May 2, 2023.
  226. "Firefox 111.0, See All New Features, Updates and Fixes". Mozilla. March 14, 2023. Archived from the original on May 3, 2022. Retrieved March 14, 2023.
  227. Nestor, Marius (April 10, 2023). "Mozilla Firefox 112 Web Browser Is Now Available for Download, This Is What's New". 9to5Linux. Archived from the original on May 2, 2023. Retrieved May 2, 2023.
  228. Sneddon, Joey (April 11, 2023). "Mozilla Firefox 112 Released with Low-Key Iterative Improvements". OMG! Ubuntu. Archived from the original on May 4, 2023. Retrieved May 4, 2023.
  229. Davenport, Corbin (May 9, 2023). "Firefox 113 Is Faster and Has a New Picture-in-Picture Mode". How-To Geek. Archived from the original on May 12, 2023. Retrieved May 12, 2023.
  230. "Firefox 113 Available With Animated AV1 Image Support (AVIS)". Phoronix. Archived from the original on May 12, 2023. Retrieved May 12, 2023.
  231. "Firefox 114.0, See All New Features, Updates and Fixes". Mozilla. June 6, 2023. Archived from the original on August 29, 2023. Retrieved June 6, 2023.
  232. "Firefox for Android 114.0, See All New Features, Updates and Fixes". Mozilla. June 6, 2023. Archived from the original on June 6, 2023. Retrieved June 6, 2023.
  233. "Firefox 115.0, See All New Features, Updates and Fixes". Mozilla. July 4, 2023. Archived from the original on September 29, 2023. Retrieved July 4, 2023.
  234. "Firefox ESR 115.0esr, See All New Features, Updates and Fixes". Mozilla. July 4, 2023. Archived from the original on July 4, 2023. Retrieved July 4, 2023.
  235. "Firefox for Android 115.0, See All New Features, Updates and Fixes". Mozilla. July 4, 2023. Archived from the original on July 4, 2023. Retrieved July 4, 2023.
  236. "Firefox 116.0, See All New Features, Updates and Fixes". Mozilla. August 1, 2023. Archived from the original on September 1, 2023. Retrieved August 1, 2023.
  237. "Firefox for Android 116.0, See All New Features, Updates and Fixes". Mozilla. August 1, 2023. Archived from the original on August 1, 2023. Retrieved August 1, 2023.
  238. "Firefox 117.0, See All New Features, Updates and Fixes". Mozilla. August 29, 2023. Archived from the original on September 23, 2023. Retrieved August 29, 2023.
  239. "Firefox for Android 117.0, See All New Features, Updates and Fixes". Mozilla. August 29, 2023. Archived from the original on August 29, 2023. Retrieved August 29, 2023.
  240. "Firefox 118.0, See All New Features, Updates and Fixes". Mozilla. September 26, 2023. Archived from the original on November 8, 2023. Retrieved September 26, 2023.
  241. "Firefox for Android 118.0, See All New Features, Updates and Fixes". Mozilla. September 26, 2023. Retrieved September 26, 2023.
  242. "Firefox 119.0, See All New Features, Updates and Fixes". Mozilla. October 24, 2023. Archived from the original on November 9, 2023. Retrieved October 24, 2023.
  243. "Firefox for Android 119.0, See All New Features, Updates and Fixes". Mozilla. October 24, 2023. Archived from the original on October 25, 2023. Retrieved October 24, 2023.
  244. "Firefox 120.0, See All New Features, Updates and Fixes". Mozilla. November 21, 2023. Archived from the original on November 21, 2023. Retrieved November 21, 2023.
  245. "Firefox for Android 120.0, See All New Features, Updates and Fixes". Mozilla. November 21, 2023. Archived from the original on November 21, 2023. Retrieved November 21, 2023.
  246. "Firefox 121.0, See All New Features, Updates and Fixes". Mozilla. December 19, 2023. Archived from the original on March 17, 2024. Retrieved December 19, 2023.
  247. "Firefox for Android 121.0, See All New Features, Updates and Fixes". Mozilla. December 19, 2023. Archived from the original on December 19, 2023. Retrieved December 19, 2023.
  248. "Firefox 122.0, See All New Features, Updates and Fixes". Mozilla. January 23, 2024. Archived from the original on January 27, 2024. Retrieved January 23, 2024.
  249. "Firefox for Android 122.0, See All New Features, Updates and Fixes". Mozilla. January 23, 2024. Archived from the original on January 23, 2024. Retrieved January 23, 2024.
  250. "Firefox 123.0, See All New Features, Updates and Fixes". Mozilla. February 20, 2024. Archived from the original on February 20, 2024. Retrieved February 20, 2024.
  251. "Firefox for Android 123.0, See All New Features, Updates and Fixes". Mozilla. February 20, 2024. Archived from the original on February 20, 2024. Retrieved February 20, 2024.
  252. "Firefox 124.0, See All New Features, Updates and Fixes". Mozilla. March 19, 2024. Archived from the original on March 19, 2024. Retrieved March 19, 2024.
  253. "Firefox for Android 124.0, See All New Features, Updates and Fixes". Mozilla. March 19, 2024. Archived from the original on March 19, 2024. Retrieved March 19, 2024.
  254. "Firefox 125.0.1, See All New Features, Updates and Fixes". Mozilla. April 16, 2024. Archived from the original on April 16, 2024. Retrieved April 16, 2024.
  255. "Firefox for Android 125.0, See All New Features, Updates and Fixes". Mozilla. April 16, 2024. Archived from the original on April 16, 2024. Retrieved April 16, 2024.
  256. "Firefox 126.0, See All New Features, Updates and Fixes". Mozilla. May 14, 2024. Archived from the original on May 13, 2024. Retrieved May 14, 2024.
  257. "Firefox for Android 126.0, See All New Features, Updates and Fixes". Mozilla. May 14, 2024. Archived from the original on May 14, 2024. Retrieved May 14, 2024.
  258. "Firefox 127.0, See All New Features, Updates and Fixes". Mozilla. June 11, 2024. Archived from the original on June 10, 2024. Retrieved June 11, 2024.
  259. "Firefox for Android 127.0, See All New Features, Updates and Fixes". Mozilla. June 11, 2024. Retrieved June 11, 2024.
  260. "Firefox 128.0, See All New Features, Updates and Fixes". Mozilla. July 9, 2024. Archived from the original on July 30, 2024. Retrieved July 9, 2024.
  261. "Firefox ESR 128.0esr, See All New Features, Updates and Fixes". Mozilla. July 9, 2024. Archived from the original on July 9, 2024. Retrieved July 9, 2024.
  262. "Firefox for Android 128.0, See All New Features, Updates and Fixes". Mozilla. July 9, 2024. Archived from the original on July 9, 2024. Retrieved July 9, 2024.
  263. "Firefox 129.0, See All New Features, Updates and Fixes". Mozilla. August 6, 2024. Archived from the original on August 6, 2024. Retrieved August 6, 2024.
  264. "Firefox for Android 129.0, See All New Features, Updates and Fixes". Mozilla. August 6, 2024. Archived from the original on August 6, 2024. Retrieved August 6, 2024.
  265. "Firefox 130.0, See All New Features, Updates and Fixes". Mozilla. September 3, 2024. Archived from the original on September 3, 2024. Retrieved September 3, 2024.
  266. "Firefox for Android 130.0, See All New Features, Updates and Fixes". Mozilla. September 3, 2024. Archived from the original on September 3, 2024. Retrieved September 3, 2024.
  267. "Firefox 131.0, See All New Features, Updates and Fixes". Mozilla. October 1, 2024. Archived from the original on October 1, 2024. Retrieved October 1, 2024.
  268. "Firefox for Android 131.0, See All New Features, Updates and Fixes". Mozilla. October 1, 2024. Archived from the original on October 1, 2024. Retrieved October 1, 2024.
  269. "Firefox 132.0, See All New Features, Updates and Fixes". Mozilla. October 29, 2024. Archived from the original on November 4, 2024. Retrieved November 4, 2024.
  270. "Firefox for Android 132.0, See All New Features, Updates and Fixes". Mozilla. October 29, 2024. Archived from the original on November 4, 2024. Retrieved November 4, 2024.
  271. "Firefox 133.0, See All New Features, Updates and Fixes". Mozilla. November 26, 2024. Archived from the original on November 26, 2024. Retrieved November 26, 2024.
  272. "Firefox for Android 133.0, See All New Features, Updates and Fixes". Mozilla. November 26, 2024. Archived from the original on November 26, 2024. Retrieved November 26, 2024.
  273. "Firefox 134.0, See All New Features, Updates and Fixes". Mozilla. January 7, 2025. Archived from the original on January 7, 2025. Retrieved January 7, 2025.
  274. "Firefox for Android 134.0, See All New Features, Updates and Fixes". Mozilla. January 7, 2025. Archived from the original on January 7, 2025. Retrieved January 7, 2025.
  275. "Mozilla Firefox Web Browser". Mozilla. Archived from the original on August 24, 2011. Retrieved December 16, 2015.
  276. "Proposed changes to supported build configurations (tiers)". Retrieved July 14, 2012.
  277. "Mozilla FTP directory for 64-bit Linux builds of Firefox 4". Mozilla. Archived from the original on February 9, 2013. Retrieved July 14, 2012.
  278. "Expose x86_64 Linux builds on the download pages". bugzilla.mozilla.org. Mozilla. Archived from the original on July 30, 2013. Retrieved July 14, 2012.
  279. "FTP directory for Mozilla Firefox 13.0.1 nightly build candidates". Mozilla. Archived from the original on June 19, 2012.
  280. Zbarsky, Boris. "Re: Requirements for being called Firefox 4". mozilla.dev.planning on Google Groups. Retrieved July 14, 2012.
  281. Aas, Josh (November 10, 2010). "Firefox 4 for Mac OS X: Under the Hood". Boom Swagger Boom. Self-published. Archived from the original on July 7, 2012. Retrieved January 10, 2013.
  282. Brinkmann, Martin (April 19, 2017). "Firefox 53.0 release: find out what is new". ghacks. Archived from the original on July 30, 2024. Retrieved April 20, 2017.
  283. "Bug 814009 – Disable windows 64 builds for now". bugzilla.mozilla.org. November 21, 2012. Archived from the original on November 4, 2013. Retrieved October 9, 2013.
  284. "Mozilla backpedals on Firefox 64-bit for Windows, will keep nightly builds coming after all". December 22, 2012. Archived from the original on May 27, 2013. Retrieved May 23, 2013.
  285. "Download Firefox Beta in your language". Mozilla. Archived from the original on April 10, 2015. Retrieved April 8, 2015.
  286. "Supported build configurations – MDN". Archived from the original on December 1, 2016. Retrieved August 12, 2015.
  287. ^ "Firefox 134.0, See All New Features, Updates and Fixes". January 7, 2025. Retrieved January 7, 2025.
  288. ^ "Firefox ESR 128.6.0, See All New Features, Updates and Fixes". January 7, 2025. Retrieved January 7, 2025.
  289. ^ "Firefox users on Windows 7, 8 and 8.1 moving to Extended Support Release". mozilla.org. Mozilla Foundation. Retrieved June 6, 2023.
  290. ^ "Firefox ESR schedule". whattrainisitnow.com. Mozilla Foundation. Retrieved September 6, 2024.
  291. "Mozilla Firefox ESR 52.9.0 System Requirements". mozilla.org. Mozilla Foundation. Retrieved June 26, 2018.
  292. "Update on Firefox Support for Windows XP and Vista". Firefox Future Releases Blog. Mozilla Foundation. December 23, 2016 – via blog.mozilla.org.
  293. ^ "Mozilla Firefox ESR 10.0.12 System Requirements". mozilla.org. Mozilla Foundation. Retrieved January 8, 2013.
  294. "Mozilla Firefox 12.0 System Requirements". mozilla.org. Mozilla Foundation. Retrieved April 24, 2012.
  295. Keybl, Alex. "Upcoming Firefox Support Changes". Firefox Future Releases Blog. Retrieved December 10, 2017.
  296. "Mozilla sets end of Firefox for Win2K, early XP". March 26, 2012. Retrieved May 7, 2020.
  297. ^ "Mozilla Firefox 2.0 System Requirements". mozilla.org. Mozilla Foundation. October 24, 2006.
  298. Peters, Jay (January 6, 2021). "Firefox's latest update brings native support for Apple's Arm-based Macs". The Verge. Retrieved January 7, 2021.
  299. "Firefox users on macOS 10.12, 10.13 and 10.14 moving to Extended Support Release". mozilla.org. Mozilla Foundation. Retrieved June 6, 2023.
  300. "Firefox ESR 78.15.0 System Requirements". mozilla.org. Mozilla Foundation. October 5, 2021.
  301. "Update on Firefox Support for macOS 10.9, 10.10 and 10.11". Firefox Future Releases Blog. Mozilla Foundation. June 23, 2020 – via blog.mozilla.org.
  302. "Mozilla Firefox ESR 45.9.0 System Requirements". mozilla.org. Mozilla Foundation. April 19, 2017.
  303. "Mozilla Firefox 48.0.2 System Requirements". mozilla.org. Mozilla Foundation. August 24, 2016.
  304. "Firefox 48.0 release notes". August 2, 2016.
  305. Brinkmann, Martin (September 20, 2016). "Firefox 49 Release: Find out what is new". Ghacks. Retrieved June 7, 2020.
  306. Protalinski, Emil (April 29, 2016). "Mozilla will retire Firefox support for OS X 10.6, 10.7, and 10.8 in August 2016". VentureBeat.
  307. "Mozilla Firefox 16.0.2 System Requirements". mozilla.org. Mozilla Foundation. Retrieved November 20, 2012.
  308. "Mozilla Firefox 3.6 System Requirements". archive.org. Mozilla Foundation. January 21, 2010. Retrieved December 14, 2012.
  309. Nightingale, Johnathan (March 14, 2014). "Update on Metro". mozilla.org. Mozilla Foundation.
  310. "Mozilla Firefox 43.0 System Requirements". mozilla.org. Mozilla Foundation. December 15, 2015.
  311. ^ "Firefox for Android 134.0, See All New Features, Updates and Fixes". January 7, 2025. Retrieved January 7, 2025.
  312. ^ "Firefox for Android 134.0 System Requirements". Mozilla.org. January 7, 2025.
  313. "Firefox for Android upgrade FAQs". mozilla.org. Mozilla.
  314. ^ "Mobile/Platforms/Android". wiki.mozilla.org. Mozilla Foundation. September 28, 2017. System Requirements.
  315. "Firefox for Android – Notes (55.0.2)". mozilla.org. Mozilla Foundation. August 16, 2017.
  316. "Firefox for Android – Notes (47.0)". mozilla.org. Mozilla Foundation. June 7, 2016.
  317. "Mozilla Firefox for Mobile 32 Release Notes". mozilla.org. Mozilla Foundation. September 2, 2014.
  318. "What's new in Firefox for iOS (version 96) | Firefox for iOS Help". mozilla.org. Mozilla Foundation. January 11, 2022.

Further reading

External links

Mozilla
Projects
Mozilla
Labs
Mozilla
Research
Mozilla
Foundation
Firefox
Origins
Frameworks
Components
Typefaces
Discontinued
Forks
Discontinued projects are in italics. Some projects abandoned by Mozilla that are still maintained by third parties are in underline.
Organization
Foundation
Official affiliates
People
Community
Other topics
Free and open-source software
General
Software
packages
Community
Organisations
Licenses
Types and
standards
Challenges
Related
topics
Timeline of web browsers
General
1990s
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000s
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010s
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020s
2020
2021
2022
2023
2024
Related topics
Categories: