Firefox version history
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.[3] Firefox 85 is the latest version, which was released on January 26, 2021.
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Current and future releases
Current supported official releases
Current supported test releases
Future official releases
- Rapid
Future test releases
- Firefox 87.0 Developer Edition
- Firefox 87.0 Beta
- Firefox 88.0 Nightly
- Firefox 88.0 Developer Edition
- Firefox 88.0 Beta
- Firefox 89.0 Nightly
- Firefox 89.0 Developer Edition
- Firefox 89.0 Beta
- Firefox 90.0 Nightly
- Firefox 90.0 Developer Edition
- Firefox 90.0 Beta
- Firefox 91.0 Nightly
- Firefox 91.0 Developer Edition
- Firefox 91.0 Beta
- Firefox 92.0 Nightly
- Firefox 92.0 Developer Edition
- Firefox 92.0 Beta
- Firefox 93.0 Nightly
- Firefox 93.0 Developer Edition
- Firefox 93.0 Beta
- Firefox 94.0 Nightly
- Firefox 94.0 Developer Edition
- Firefox 94.0 Beta
- Firefox 95.0 Nightly
- Firefox 95.0 Developer Edition
- Firefox 95.0 Beta
- Firefox 96.0 Nightly
- Firefox 96.0 Developer Edition
- Firefox 96.0 Beta
- Firefox 97.0 Nightly
- Firefox 97.0 Developer Edition
- Firefox 97.0 Beta
- Firefox 98.0 Nightly
- Firefox 98.0 Developer Edition
- Firefox 98.0 Beta
- Firefox 99.0 Nightly
Early versions
Rapid releases
In April 2011, the development process was split into several "channels", each working on a build in a different stage of development. The most recent available build is called "Nightly Builds" and offers the latest, untested features and updates. The "Aurora" build is up to six weeks behind "Nightly" and offers functionality that has undergone basic testing. As of version 35, the "Aurora" channel has been renamed to the "Developer Edition" channel.[4][5] The "Beta" channel is up to six weeks behind the "Aurora" build, for up to about twelve weeks compared to the most recent "Nightly" build. The "Beta" channel provides improved stability over the "Nightly" builds and is the first development milestone that has the "Firefox" logo. "Release" is the current official version of Firefox. Gecko version numbering is the same as the Firefox build version number, starting with 5.0 on Firefox 5.
The stated aim of this faster-paced process is to get new features to users faster.[6] This accelerated release cycle was met with criticism by users, as it often broke add-on compatibility,[7] as well as those who believe Firefox was simply trying to increase its version number to compare with other browsers such as Google Chrome.[8]
Firefox 5 through 9
Firefox 5 was released on June 21, 2011,[9] 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.[10] Firefox 5 has significantly improved the speed of web-related tasks, such as loading pages with combo boxes or MathML. Mozilla also integrated the HTML5 video WebM standard into the browser, allowing playback of WebM videos.[11]
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[12]), 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.[13]
Firefox 7 was released on September 27, 2011,[14] and uses as much as 50% less RAM than Firefox 4 as a result of the MemShrink project to reduce Firefox memory usage.[15][16][17]
Firefox 7.0.1 was released a few days later, fixing a rare, but serious, issue with add-ons not being detected by the browser.[18] 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.[12][19]
Firefox 8 was released on November 8, 2011[20] 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.[21]
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.[22]
Release history of Firefox 5–9 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
5.0 | June 21, 2011 | Official Firefox 5.0 release.[9]
|
5.0.1 | July 11, 2011 | Off-cycle stability update for Mac OS X only.
End-of-life 5.0.x product line on August 16, 2011. |
6.0 | August 16, 2011 | Official Firefox 6.0 release.[13]
|
6.0.1 | August 30, 2011 | Off-cycle security update.
|
6.0.2 | September 6, 2011 | Off-cycle security update.[34]
End-of-life 6.0.x product line on September 27, 2011. |
7.0 | September 27, 2011 | Official Firefox 7.0 release.[14]
|
7.0.1 | September 29, 2011 | Off-cycle security and stability update.[18]
End-of-life 7.0.x product line on November 8, 2011. |
8.0 | November 8, 2011 | Official Firefox 8.0 release.[20]
Changes during betas
|
8.0.1 | November 21, 2011 | Off-cycle security and stability update.[35]
End-of-life 8.0.x product line on December 20, 2011. |
9.0 | December 20, 2011 | Official Firefox 9.0 release.[22]
|
9.0.1 | December 21, 2011 | Off-cycle security and stability update.[36]
End-of-life 9.0.x product line on January 31, 2012. |
Firefox 10 through 16
Firefox 10 and Firefox ESR 10 were released on January 31, 2012.[37][38] 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.[39][40] 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.[37] 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.[41]
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.[42] 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.[43]
Firefox 11 was released on March 13, 2012. Firefox 11 introduced many new features, including migration of bookmarks and history from Google Chrome,[44] SPDY integrated services, Page Inspector Tilt (3D View), Add-on Sync, redesigned HTML5 video controls, and the Style Editor (CSS).[45] The update also fixed many bugs, and improved developer tools.[46]
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.[47] 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).[48] Many bugs were fixed, as well as many other minor under-the-hood changes.[49][50] Firefox 12 is the final release to support Windows 2000 and Windows XP RTM & SP1.[51][52]
Firefox 13 was released on June 5, 2012.[53] 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[54] and home tab page.[55] 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.[56] The user profile cleaner/reset provides a way for users to fix Firefox errors and glitches that may occur.[57] 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.[58]
Firefox 14 was released on June 26, 2012 for mobile devices only, just outside the regular release schedule of the web browser.[59] 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.[59]
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.[60] 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.).[61]
Firefox 15 was released on August 28, 2012 with a "Responsive Design View" developer tool,[62] adds support for the Opus audio format, and adds preliminary native PDF support (disabled by default).[63]
Firefox 15 introduced silent updates, an automatic update that will update Firefox to the latest version without notifying the user,[64] a feature that the web browsers Google Chrome and Internet Explorer 8 and above have already implemented,[65][66] although the user was able to disable that function.[67] The startup time in Firefox 15 was improved for Windows users.[68]
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.[69] 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.[70]
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.[71] The security flaw was fixed in version 16.0.1, which was released the following day, October 11, 2012.[72]
Release history of Firefox 10–16 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
10.0 | January 31, 2012 | Official Firefox 10.0 release.[37]
|
10.0.1 | February 10, 2012 | Off-cycle security and stability update.[73] |
10.0esr | January 31, 2012 | Official Firefox 17.0 Extended Support Release (ESR).
First Extended Support Release (ESR).[38] Same changelogs of 10.0 |
10.0.1esr | February 10, 2012 | Off-cycle security and stability update.
Same changelogs of 10.0.1 |
10.0.2 | February 16, 2012 | Off-cycle security and stability update.[74]
End-of-life 10.0.x product line on March 13, 2012. |
10.0.2esr | February 16, 2012 | Off-cycle security and stability update.
Same changelogs of 10.0.2 |
10.0.3esr | March 13, 2012 | Regular security and stability update.[75]
|
10.0.4esr | April 24, 2012 | Regular security and stability update.[77]
|
10.0.5esr | June 5, 2012 | Regular security and stability update.[78]
|
10.0.6esr | July 17, 2012 | Regular security and stability update.[79]
|
10.0.7esr | August 28, 2012 | Regular security and stability update.[80]
|
10.0.8esr | October 9, 2012 | Regular security and stability update.[81] |
10.0.9esr | October 12, 2012 | Off-cycle security update.[82] |
10.0.10esr | October 26, 2012 | Off-cycle security update.[83] |
10.0.11esr | November 20, 2012 | Off-cycle security update.[84] |
10.0.12esr | January 8, 2013 | Regular security update.[85] End-of-life 10.0.x ESR product line on February 19, 2013. |
11.0 | March 13, 2012 | Official Firefox 11.0 release.[46]
End-of-life 11.0.x product line on April 24, 2012. |
12.0 | April 24, 2012 | Official Firefox 12.0 release.[50]
End-of-life 12.0.x product line on June 5, 2012. |
13.0 | June 5, 2012 | Official Firefox 13.0 release.[53]
|
13.0.1 | June 15, 2012 | Off-cycle security and stability update.[87]
End-of-life 13.0.x product line on July 17, 2012. |
14.0 | June 26, 2012 | Android
Official Firefox Mobile 14.0 release.[88]
|
14.0.1 | July 17, 2012 | Desktop
Official Firefox Desktop 14.0 release.[91]
End-of-life 14.0.x product line on August 28, 2012. |
15.0 | August 28, 2012 | Official Firefox 15.0 release.[63]
|
15.0.1 | September 6, 2012 | Off-cycle stability update.[92]
End-of-life 15.0.x product line on October 9, 2012. |
16.0 | October 9, 2012 | Official Firefox 16.0 release.[70]
|
16.0.1 | October 11, 2012 | Off-cycle security and stability update.[72] |
16.0.2 | October 26, 2012 | Off-cycle security and stability update.[93]
Final release to support Mac OS X Leopard[94] End-of-life 16.0.x product line on November 20, 2012. |
Firefox 17 through 23
![](../I/Mozilla_Firefox_logo_2013.svg.png.webp)
Firefox 17 and Firefox ESR 17 were released on November 20, 2012.[95] It was not planned to bring as many user-facing features as previous releases, it brings improved display of location bar results,[96] improvements to the silent update mechanism for users with incompatible add-ons,[97] and refinements to the Click-To-Play system introduced in Firefox 14.[98] A new feature for developers, an HTML tree editor[99] is also included. Firefox 17 is the first version of the browser that uses SpiderMonkey 17.[100]
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.[101] A new feature for Firefox 18 is IonMonkey, Mozilla's next generation JavaScript engine,[102] it also uses some functions of WebRTC.[103]
Firefox 19 was released on February 19, 2013, featuring a built-in PDF viewer.[104]
Firefox 20 was released on April 2, 2013, introduced a panel-based download manager,[105][106] along with H.264 decoding on the <video>
tag (on Windows only), and per-window private browsing (per-tab private browsing on Android). 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).[107]
Firefox 22 was released on June 25, 2013. WebRTC is now enabled by default.[108] Partial CSS Flexbox support was added (flex-wrap support was scheduled for Firefox 28[109]). 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;[110] 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.[111]
Release history of Firefox 17–23 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
17.0 | November 20, 2012 | Official Firefox 17.0 release.[95]
|
17.0esr | November 20, 2012 | Official Firefox 17.0 Extended Support Release (ESR). |
17.0.1 | November 30, 2012 | Off-cycle stability update.[112]
End-of-life 17.0.x product line on January 8, 2013. |
17.0.1esr | November 30, 2012 | Off-cycle stability update. |
17.0.2esr | January 8, 2013 | Regular security and stability updates.
|
17.0.3esr | February 19, 2013 | Regular security update.[114] |
17.0.4esr | March 7, 2013 | Regular security update.[115] |
17.0.5esr | April 2, 2013 | Regular security update.[116] |
17.0.6esr | May 10, 2013 | Regular security update.[117] |
17.0.7esr | June 25, 2013 | Regular security update.[118] |
17.0.8esr | August 6, 2013 | Regular security update.[119] |
17.0.9esr | September 17, 2013 | Regular security update.[120] |
17.0.10esr | October 29, 2013 | Regular security update.[121] |
17.0.11esr | November 15, 2013 | Off-cycle stability update.[122]
End-of-life 17.0.x ESR product line on December 10, 2013. |
18.0 | January 8, 2013 | Official Firefox 18.0 release.[103]
Changes during Aurora releases
|
18.0.1 | January 18, 2013 | Off-cycle stability update.[123]
|
18.0.2 | February 5, 2013 | Off-cycle stability update.[124] End-of-life 18.0.x product line on February 19, 2013. |
19.0 | February 19, 2013 | Official Firefox 19.0 release.[104]
|
19.0.1 | February 27, 2013 | Off-cycle stability update.[125]
|
19.0.2 | March 7, 2013 | Off-cycle security update.[126]
End-of-life 19.0.x product line on April 2, 2013. |
20.0 | April 2, 2013 | Official Firefox 20.0 release.[106]
|
20.0.1 | April 11, 2013 | Off-cycle security update.[127]
End-of-life 20.0.x product line on May 14, 2013. |
21.0 | May 14, 2013 | Official Firefox 21.0 release.[107]
End-of-life 21.0.x product line on June 25, 2013. |
22.0 | June 25, 2013 | Official Firefox 22.0 release.[108]
End-of-life 22.0.x product line on August 6, 2013. |
23.0 | August 6, 2013 | Official Firefox 23.0 release.[110]
In this Version Mozilla changed the Firefox Logo.
|
23.0.1 | August 16, 2013 | Off-cycle stability update.[128]
End-of-life 23.0.x product line on September 17, 2013. |
Firefox 24 through 30
![](../I/Firefox_29.0_on_Windows_8.png.webp)
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.[129] It is the first version of the browser that uses SpiderMonkey 24.[130]
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,[131] did not make it to Firefox 28 Aurora channel, and was finally available with Firefox 29.[132] 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.[133][134][135]
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.[136]
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. Also, it brings many bug fixes, security improvements, and developer-related changes.[137]
Firefox 28 was released on March 18, 2014. It added support for VP9 video decoding and support for Opus in WebM.[138] For Android, features such as predictive lookup from the address bar, quick share buttons and support for OpenSearch were added.[139]
Firefox 29 was released on April 29, 2014 and includes the Australis interface, it also removes the add-on bar and moves its content to the navigation bar.[140]
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.[141][142]
Release history of Firefox 24–30 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
24.0 | September 17, 2013 | Official Firefox 24.0 release.[129]
End-of-life 24.0.x product line on October 29, 2013. |
24.0esr | September 17, 2013 | Official Firefox 24.0 Extended Support Release (ESR).[129] |
24.1.0esr | October 29, 2013 | Regular security update.[143] |
24.1.1esr | November 15, 2013 | Off-cycle stability update.[144]
|
24.2.0esr | December 10, 2013 | Regular security update.[145] |
24.3.0esr | February 4, 2014 | Regular security update.[146] |
24.4.0esr | March 18, 2014 | Regular security update.[147] |
24.5.0esr | April 29, 2014 | Regular security update.[148] |
24.6.0esr | June 10, 2014 | Regular security update.[149] |
24.7.0esr | July 22, 2014 | Regular security update.[150] |
24.8.0esr | September 2, 2014 | Regular security update.[151] |
24.8.1esr | September 24, 2014 | Off-cycle security update.[152] End-of-life 24.x.x ESR product line on October 14, 2014. |
25.0 | October 29, 2013 | Official Firefox 25.0 release.[133]
|
25.0.1 | November 15, 2013 | Off-cycle security and stability update.[153]
End-of-life 25.0.x product line on December 10, 2013. |
26.0 | December 10, 2013 | Official Firefox 26.0 release.[136]
|
26.0.1 | December 20, 2013 | Off-cycle stability mobile release.[154]
End-of-life 26.0.x product line on February 4, 2014. |
27.0 | February 4, 2014 | Official Firefox 27.0 release.[137]
|
27.0.1 | February 13, 2014 | Off-cycle stability release.[155]
End-of-life 27.0.x product line on March 18, 2014. |
28.0 | March 18, 2014 | Official Firefox 28.0 release.[138]
|
28.0.1 | March 24, 2014 | Android
Off-cycle stability mobile update.[156]
End-of-life 28.0.x product line on April 29, 2014. |
29.0 | April 29, 2014 | Official Firefox 29.0 release.[140]
|
29.0.1 | May 9, 2014 | Off-cycle stability update.[157]
End-of-life 29.0.x product line on June 10, 2014. |
30.0 | June 10, 2014 | Official Firefox 30.0 release.[141]
End-of-life 30.0.x product line on July 22, 2014. |
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.[158] 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.[159]
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.[160][161]
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),[162] OpenH264 support, search suggestions on about:home and about:newtab, address bar search improvements, session restore reliability improvements, and other changes.[163]
Firefox 33.1 was released on November 10, 2014, celebrating Firefox's 10-year anniversary.[164][165] Firefox 33.1.1 was released for desktop only on November 14, 2014, fixing a startup crash.[166]
![](../I/Firefox-hello-logo.svg.png.webp)
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.[167]
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.[168]
Firefox 36 was released for desktop on February 24, 2015, bringing full HTTP/2 support and other smaller improvements and fixes.[169] It was also released for Android three days later on February 27, 2015, adding support for the tablet user interface.[170]
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.[171][172]
Release history of Firefox 31–37 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
31.0 | July 22, 2014 | Official Firefox 31.0 release.[158]
End-of-life 31.0.x product line on September 2, 2014. |
31.0esr | July 22, 2014 | Official Firefox 31.0 Extended Support Release (ESR).[158] |
31.1.0esr | September 2, 2014 | Regular security update.[173] |
31.1.1esr | September 24, 2014 | Off-cycle security update.[174] |
31.2.0esr | October 14, 2014 | Regular security and stability update.[175]
|
31.3.0esr | December 1, 2014 | Regular security and stability update.[176]
|
31.4.0esr | January 13, 2015 | Regular security update.[177] |
31.5.0esr | February 24, 2015 | Regular security update.[178] |
31.5.2esr | March 20, 2015 | Off-cycle security update.[179] |
31.5.3esr | March 21, 2015 | Off-cycle security update.[180] |
31.6.0esr | March 31, 2015 | Regular security update.[181] |
31.7.0esr | May 12, 2015 | Regular security update.[182] |
31.8.0esr | July 2, 2015 | Regular security update.[183] End-of-life 31.x.x ESR product line on August 11, 2015. |
32.0 | September 2, 2014 | Official Firefox 32.0 release.[161]
|
32.0.1 | September 10, 2014 (Android) September 12, 2014 (desktop) |
Off-cycle stability update.[184]
Desktop[185]
Android[186]
|
32.0.2 | September 18, 2014 | Desktop
Off-cycle stability update.[187]
|
32.0.3 | September 24, 2014 | Off-cycle security update.[188][189]
End-of-life 32.0.x product line on October 14, 2014. |
33.0 | October 14, 2014 | Official Firefox 33.0 release.[163]
|
33.0.1 | October 24, 2014 | Desktop
Off-cycle stability update.[190]
|
33.0.2 | October 28, 2014 | Desktop
Off-cycle stability update.[191]
|
33.0.3 | November 6, 2014 | Desktop
Off-cycle stability update.[192]
|
33.1 | November 10, 2014 | Firefox's 10-year anniversary.[164][193]
|
33.1.1 | November 14, 2014 | Desktop
Off-cycle stability update.[194]
End-of-life 33.x product line on December 1, 2014. |
34.0 | December 1, 2014 | Official Firefox 34.0 release.[167]
|
34.0.5 | December 1, 2014 | Desktop
Official Firefox 34.0.5 release.[195]
End-of-life 34.0.x product line on January 13, 2015. |
35.0 | January 13, 2015 | Official Firefox 35.0 release.[168]
Changes during Developer Edition releases |
35.0.1 | January 26, 2015 (desktop) February 5, 2015 (Android) |
Off-cycle stability update.[198][199]
Android
End-of-life 35.0.x product line on February 24, 2015. |
36.0 | February 24, 2015 (desktop) February 27, 2015 (Android) |
Official Firefox 36.0 release.[169][170]
|
36.0.1 | March 5, 2015 (desktop) March 6, 2015 (Android) |
Off-cycle stability update.[200]
|
36.0.2 | March 16, 2015 | Android
Off-cycle stability mobile update.[201]
|
36.0.3 | March 20, 2015 | Off-cycle security update.[202]
|
36.0.4 | March 21, 2015 | Off-cycle security update.[203][204]
End-of-life 36.0.x product line on March 31, 2015. |
37.0 | March 31, 2015 | Official Firefox 37.0 release.[171][172]
|
37.0.1 | April 3, 2015 | Off-cycle stability and security update.[205]
Desktop
Android
|
37.0.2 | April 14, 2015 (Android) April 20, 2015 (desktop) |
Off-cycle stability and security update.[206][207]
Desktop
Android
End-of-life 37.0.x product line on May 12, 2015. |
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.[208]
Firefox 39 was released on July 2, 2015 for desktop and Android, disabling insecure SSLv3 and RC4, improving performance for IPv6 fallback to IPv4 and including various security fixes.[209][210] Firefox 39.0.3 was released on August 6, 2015, to fix a zero-day exploit.[211]
Firefox 40 was released on August 11, 2015 for desktop and Android. 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.[212][213][214]
Firefox 41 was released on September 22, 2015 for desktop and Android. 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.[215][216]
Firefox 42 was released on November 3, 2015 for desktop and Android. Among many additions are private browsing with tracking protection, IPv6 support in WebRTC, and the ability to view HTML source in a tab.[217][218]
Firefox 43 was released on December 15, 2015 for desktop and Android. Among many additions are the availability of the 64-bit version for Windows 7 and above, a new strict blocklist, and audio indicators on Android.[219][220]
Firefox 44 was released on January 26, 2016 for desktop and Android. 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, support for the brotli compression format via HTTPS content-encoding, and the use of Android print service to enable cloud printing.[221][222] "Ask me every time" cookies option was removed without any notifications.[223]
Release history of Firefox 38–44 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
38.0 | May 12, 2015 | Official Firefox 38.0 release.[208]
|
38.0esr | May 12, 2015 | Official Firefox 38.0 Extended Support Release (ESR).[208] |
38.0.1 | May 14, 2015 (desktop) May 15, 2015 (Android) |
Off-cycle stability update.[224][225]
Desktop
Android
|
38.0.1esr | May 14, 2015 | Off-cycle stability update.[224] |
38.0.5 | June 2, 2015 | Official Firefox 38.0.5 release.[226][227]
Desktop
Android
End-of-life 38.0.x product line on July 2, 2015. |
38.0.6 | June 9, 2015 | Desktop
Off-cycle update.
Note: This release is only available from the Mozilla archives. End-of-life 38.0.x product line on July 2, 2015. |
38.1.0esr | July 2, 2015 | Regular security update.[228] |
38.1.1esr | August 6, 2015 | Off-cycle security update.
|
38.2.0esr | August 11, 2015 | Regular security and stability update.[230]
|
38.2.1esr | August 27, 2015 | Off-cycle security update.[231] |
38.3.0esr | September 22, 2015 | Regular security update.[232] |
38.4.0esr | November 3, 2015 | Regular security update.[233] |
38.5.0esr | December 15, 2015 | Regular security update.[234]
|
38.5.1esr | December 21, 2015 | Off-cycle stability update.[235]
|
38.5.2esr | December 22, 2015 | Off-cycle security and stability update.[236]
|
38.6.0esr | January 26, 2016 | Regular security update.[237] |
38.6.1esr | February 11, 2016 | Off-cycle graphite2 library update.[238]
|
38.7.0esr | March 8, 2016 | Regular security update.[239] |
38.7.1esr | March 16, 2016 | Off-cycle stability update.[240]
|
38.8.0esr | April 26, 2016 | Regular security update.[241] End-of-life 38.x.x ESR product line on June 7, 2016. |
39.0 | July 2, 2015 | Official Firefox 39.0 release.[210][209]
|
39.0.3 | August 6, 2015 | Off-cycle security update.[211]
End-of-life 39.0.x product line on August 11, 2015. |
40.0 | August 11, 2015 | Official Firefox 40.0 release.[213][214]
|
40.0.2 | August 13, 2015 | Desktop
Off-cycle stability update.[242]
|
40.0.3 | August 27, 2015 | Off-cycle stability and security update.[243][244]
End-of-life 40.0.x product line on September 22, 2015. |
41.0 | September 22, 2015 | Official Firefox 41.0 release.[217][218]
|
41.0.1 | September 30, 2015 | Desktop
Off-cycle stability update.[245]
|
41.0.2 | October 15, 2015 | Off-cycle security update.[246] End-of-life 41.0.x product line on November 3, 2015. |
42.0 | November 3, 2015 | Official Firefox 42.0 release.[217][218]
End-of-life 42.0.x product line on December 15, 2015. |
43.0 | December 15, 2015 | Official Firefox 43.0 release.[219][220]
|
43.0.1 | December 18, 2015 | Desktop
Off-cycle stability update.[247]
|
43.0.2 | December 22, 2015 | Desktop
Off-cycle security and stability update.[248]
|
43.0.3 | December 28, 2015 | Desktop
Off-cycle stability update.[249]
|
43.0.4 | January 6, 2016 | Desktop
Off-cycle stability update.[250]
End-of-life 43.0.x product line on January 26, 2016. |
44.0 | January 26, 2016 | Official Firefox 44.0 release.[221][222]
Changes during Nightly releases
|
44.0.1 | February 8, 2016 | Desktop
Off-cycle stability update.[251]
|
44.0.2 | February 11, 2016 | Off-cycle security and stability update.[252][253]
End-of-life 44.0.x product line on March 8, 2016. |
Firefox 45 through 51
Firefox 45 and Firefox 45 ESR were released on March 8, 2016 for desktop (both) and Android (no ESR). 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.[254][255]
Firefox 46 was released on April 26, 2016 for both desktop and Android. 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, and removal of support for Android 3.0 (Android only).[256][257]
Firefox 47 was released on June 7, 2016 for both desktop and Android. 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 HTML5 video; enabling VP9 video codec for users with fast machines; the ability of embedded YouTube videos to play with HTML5 video if Flash is not installed; and the addition of the Latgalian language. It is also the last Firefox version to support Android 2.3.x.[258][259]
Firefox 48 was released on August 2, 2016 for both desktop and Android. 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.
Firefox 48 is the last Firefox version to support Mac OS X Snow Leopard, Mac OS X Lion, and OS X Mountain Lion.[260] Additionally, support for old processors without SSE2 extensions such as the AMD Athlon XP and Pentium III was dropped.[260]
Firefox 49 was released on September 20, 2016 for both desktop and Android. 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 HTML5 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.[261][262] The macOS version now requires at least OS X Mavericks, and the Microsoft Windows version requires a CPU which supports SSE2.[260]
Firefox 50 was released on November 15, 2016 for both desktop and Android. 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, increased availability of WebGL to more than 98 percent of users on Windows 7 and newer (desktop), and support for HLS videos via player overlay (Android).[263][264]
Firefox 51 was released on January 24, 2017 for both desktop and Android. 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.[265][266]
Release history of Firefox 45–51 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
45.0 | March 8, 2016 | Official Firefox 45.0 release.[254][255]
|
45.0.1 | March 16, 2016 | Off-cycle stability update.[267][268]
|
45.0.2 | April 11, 2016 | Off-cycle stability update.[269][270]
Desktop
Android
End-of-life 45.0.x product line on April 26, 2016. |
45.0esr | March 8, 2016 | Official Firefox 45.0 Extended Support Release (ESR). |
45.0.1esr | March 16, 2016 | Off-cycle stability update.[271]
Same changelog of 45.0.1 |
45.0.2esr | April 11, 2016 | Off-cycle stability update.[271]
Same changelog of 45.0.2 |
45.1.0esr | April 26, 2016 | Regular security and stability update.[272] |
45.1.1esr | May 3, 2016 | Off-cycle stability update.[273]
|
45.2.0esr | June 7, 2016 | Regular security and stability update.[274]
|
45.3.0esr | August 2, 2016 | Regular security and stability update.[275] |
45.4.0esr | September 20, 2016 | Regular security update.[276] |
45.5.0esr | November 15, 2016 | Regular security update.[277] |
45.5.1esr | November 30, 2016 | Off-cycle security update.[278] |
45.6.0esr | December 13, 2016 | Regular security update.[279] |
45.7.0esr | January 24, 2017 | Regular security update.[280] |
45.8.0esr | March 7, 2017 | Regular security update.[281] |
45.9.0esr | April 19, 2017 | Regular security update.[282] End-of-life 45.x.x ESR product line on June 13, 2017. |
46.0 | April 26, 2016 | Official Firefox 46.0 release.[256][257]
|
46.0.1 | May 3, 2016 | Off-cycle stability update.[283][284]
End-of-life 46.0.x product line on June 7, 2016. |
47.0 | June 7, 2016 | Official Firefox 47.0 release.[258][259]
Android
|
47.0.1 | June 28, 2016 | Desktop
Off-cycle stability update.[285]
|
47.0.2 | November 1, 2016 | Off-cycle stability update.[286]
End-of-life 47.0.x product line on November 1, 2016. |
48.0 | August 2, 2016 | Official Firefox 48.0 release.[260]
|
48.0.1 | August 18, 2016 | Desktop
Off-cycle stability update.[287]
|
48.0.2 | August 24, 2016 | Desktop
Off-cycle stability update.[288]
End-of-life 48.0.x product line on September 20, 2016. |
49.0 | September 20, 2016 | Official Firefox 49.0 release.[261][262]
|
49.0.1 | September 23, 2016 | Desktop
Off-cycle stability update.[289]
|
49.0.2 | October 20, 2016 | Off-cycle security and stability update.[290][291]
End-of-life 49.0.x product line on November 15, 2016. |
50.0 | November 15, 2016 | Official Firefox 50.0 release.[263][264]
Android
|
50.0.1 | November 28, 2016 | Desktop
Off-cycle security and stability update.[292]
|
50.0.2 | November 30, 2016 | Off-cycle security update.[293][294]
|
50.1.0 | December 13, 2016 | Regular security update.[295][296]
End-of-life 50.x.x product line on January 24, 2017. |
51.0 | January 24, 2017 | Official Firefox 51.0 release.[265][266]
Android
|
51.0.1 | January 26, 2017 | Desktop
Off-cycle security and stability update.[297]
|
51.0.2 | February 6, 2017 | Android
Off-cycle stability update.[298]
|
51.0.3 | February 9, 2017 | Android
Off-cycle stability update.[299]
End-of-life 51.0.x product line on March 7, 2017. |
Firefox 52 through 59
![](../I/Firefox_Logo%252C_2017.svg.png.webp)
Firefox 52 and Firefox 52 ESR were released on March 7, 2017 for desktop (both) and Android (no ESR). An important aspect of Firefox ESR 52.0 is that it is the first ESR version based on 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; user warnings for insecure HTTP pages with logins (desktop); and display of media controls to pause or resume playback on the Android notification bar.[300][301] 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).[302]
Firefox 53 was released on April 19, 2017 for both desktop and Android. Starting with Firefox 53, Microsoft Windows support is exclusively for Windows 7 and above. Among the many additions are: improved graphics stability for Windows users with the addition of compositor process separation, light and dark "compact" themes available, based on the Firefox Developer Edition theme, removal of support for 32-bit macOS and 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 compositing, which allows playing videos with transparent backgrounds (desktop), Reader Mode displaying estimated reading time for the page (desktop and Android), and enabling two columns tabs setting in portrait mode (Android).[303][304]
Firefox 54 was released on June 13, 2017 for both desktop and Android. Among the many additions are: simplifying the download button and download status panel, added support for multiple content processes, the ability to create and save custom devices in Responsive web design mode (desktop), improved audio and video playback in the browser, and improved bookmarks sync performance (Android).[305][306]
Firefox 55 was released on August 8, 2017 for both desktop and Android. Among the many additions are: the launch of Windows support for WebVR, bringing immersive experiences to the web, options that let users optimize recent performance improvements, simplification of the installation process with a streamlined Windows stub installer, improvements to address bar functionality, simplification of printing from Reader Mode (desktop), and the option for accessibility settings to respect the system's set font size when displaying web pages (Android). This is also the last version to support Android Ice Cream Sandwich.[307][308]
Firefox 56 was released on September 28, 2017 for both desktop and Android. 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 (desktop), improvement of support for WebExtensions, and the end of support for Adobe Flash (Android). Starting with this version, Android support is exclusively for Android Jelly Bean and above.[309][310]
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 for desktop and Android with the name Firefox Quantum.[311] ZDNet dubbed it a "comeback" following years of falling market share against Google Chrome.[312][313] The release included a new interface design, codenamed "Photon", and a new rendering engine almost twice as fast as the previous one used.[311][312][314] 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.[315][316][317] 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.[318]
Firefox 58 was released on January 23, 2018 for desktop and Android. 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 (desktop), full screen bookmark management with folder support, support for FLAC (Free Lossless Audio Codec) playback, the ability to change the status bar color in themes, and removal of the Firefox Search widget from the home screen (Android).[319][320]
Firefox 59 was released on March 13, 2018 for desktop and Android. 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 (desktop), and the addition of Firefox as an Assist app, support for HLS (HTTP Live Streaming) playback for improved compatibility with video sites, and removal of the "about:" page.[321][322]
Release history of Firefox 52–59 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
52.0 | March 7, 2017 | Official Firefox 52.0 release.[300][301]
Android
|
52.0.1 | March 17, 2017 | Off-cycle security update.[323][324]
|
52.0.2 | March 28, 2017 | Off-cycle stability update.[325][326]
Android
End-of-life 52.0.x product line on April 19, 2017. |
52.0esr | March 7, 2017 | Official Firefox 52.0 Extended Support Release (ESR). |
52.0.1esr | March 17, 2017 | Off-cycle security update.[327]
Same changelog of 52.0.1 |
52.0.2esr | March 28, 2017 | Off-cycle stability update.[328]
Same changelog of 52.0.2 |
52.1.0esr | April 19, 2017 | Regular security and stability update.[329]
|
52.1.1esr | May 5, 2017 | Off-cycle security update.[330]
|
52.1.2esr | May 19, 2017 | Off-cycle stability update.[331]
|
52.2.0esr | June 13, 2017 | Regular security and stability update.[332]
|
52.2.1esr | June 29, 2017 | Off-cycle stability update.[333]
|
52.3.0esr | August 8, 2017 | Regular security and stability update.[334]
|
52.4.0esr | September 28, 2017 | Regular security and stability update.[335]
|
52.4.1esr | October 9, 2017 | Off-cycle stability update.[336]
|
52.5.0esr | November 14, 2017 | Regular security and stability update.[337]
|
52.5.2esr | December 7, 2017 | Off-cycle security update.[338]
|
52.5.3esr | December 28, 2017 | Off-cycle stability update.[339]
|
52.6.0esr | January 23, 2018 | Regular security and stability update.[340]
|
52.7.0esr | March 13, 2018 | Regular security and stability update.[341]
|
52.7.1esr | March 14, 2018 | Off-cycle stability update.[342]
|
52.7.2esr | March 16, 2018 | Off-cycle security update.[343]
|
52.7.3esr | March 26, 2018 | Off-cycle security update.[344]
|
52.7.4esr | April 30, 2018 | Off-cycle stability update.[345]
|
52.8.0esr | May 9, 2018 | Regular security and stability update.[346]
|
52.8.1esr | June 6, 2018 | Off-cycle security update.[347]
|
52.9.0esr | June 26, 2018 | Regular security update.[348]
End-of-life 52.x.x ESR product line on September 5, 2018. |
53.0 | April 19, 2017 | Official Firefox 53.0 release.[303][301]
Android
|
53.0.1 | April 27, 2017 | Android
Off-cycle stability update.[349]
|
53.0.2 | May 5, 2017 | Off-cycle security and stability update.[350]
Desktop
Android
|
53.0.3 | May 19, 2017 | Desktop
Off-cycle stability update.[351]
End-of-life 53.0.x product line on June 13, 2017. |
54.0 | June 13, 2017 | Official Firefox 54.0 release.[305][301]
Android
Changes during Developer Edition releases
|
54.0.1 | June 29, 2017 | Off-cycle stability update.[352][353]
Desktop
Android
End-of-life 54.0.x product line on August 8, 2017. |
55.0 | August 8, 2017 | Official Firefox 55.0 release.[307][308]
Android
|
55.0.1 | August 10, 2017 | Desktop
Off-cycle stability update.[355]
|
55.0.2 | August 16, 2017 | Off-cycle stability update.[356][357]
Android
|
55.0.3 | August 25, 2017 | Desktop
Off-cycle stability update.[358]
End-of-life 55.0.x product line on September 28, 2017. |
56.0 | September 28, 2017 | Official Firefox 56.0 release.[309][310]
Android
|
56.0.1 | October 9, 2017 | Desktop
Off-cycle stability update.[359]
|
56.0.2 | October 26, 2017 | Desktop
Off-cycle stability update.[360]
End-of-life 56.0.x product line on November 14, 2017. |
57.0 | November 14, 2017 | Official Firefox 57.0 release.[315][316]
Firefox 57 ("Quantum")[361]
Android
|
57.0.1 | November 29, 2017 | Off-cycle security and stability update.[362][363]
Android
|
57.0.2 | December 7, 2017 | Desktop
Off-cycle stability update.[364]
|
57.0.3 | December 28, 2017 | Desktop
Off-cycle stability update.[365]
|
57.0.4 | January 4, 2018 | Off-cycle security update.[366][367]
End-of-life 57.0.x product line on January 23, 2018. |
58.0 | January 23, 2018 | Official Firefox 58.0 release.[319][320]
Android
|
58.0.1 | January 29, 2018 | Off-cycle security and stability update.[368][369]
Android
|
58.0.2 | February 7, 2018 | Off-cycle stability update.[370][371]
Android
End-of-life 58.0.x product line on March 13, 2018. |
59.0 | March 13, 2018 | Official Firefox 59.0 release.[321][322]
Android
|
59.0.1 | March 16, 2018 | Off-cycle security update.[372][373]
|
59.0.2 | March 26, 2018 | Off-cycle security and stability update.[374][375]
Android
|
59.0.3 | April 30, 2018 | Desktop
Off-cycle stability update.[376]
End-of-life 59.0.x product line on May 9, 2018. |
Firefox 60 through 67
Firefox 60 and Firefox 60 ESR were released on May 9, 2018 for desktop (both) and Android (no ESR). 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 (desktop), exclusive support for extensions built using the WebExtension API (ESR), the implementation of Quantum CSS (also known as Stylo) in Android for faster page rendering; and the addition of the View Page Source option to the Page Action menu (Android).[377][378][379]
Firefox 61 was released on June 26, 2018 for both desktop and Android. 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 (desktop), improved security and enhanced performances (both), and the fix for a recurring crash on Samsung Galaxy S8 devices running Android Oreo (Android).[380][381]
Firefox 62 was released on September 5, 2018 for both desktop and Android. 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 (desktop), improved scrolling performance, faster page load times over Wi-Fi connections by loading from the network cache if disk cache is slow, and "Product and feature tips" toggle in Notifications settings (Android).[382][383] The bookmarks' Description field was deprecated and will be removed completely in future releases.
Firefox 63 was released on October 23, 2018 for both desktop and Android. 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, the removal of the "Never Check for Updates" option from "about:preferences" and "Open in Sidebars" feature from the Library (desktop), support for Picture-In-Picture video, and use of notification channels (Android).[384][385]
Firefox 64 version 64.0 was released on December 11, 2018 for desktop only. 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.[386] Three days later, version 64.0.1 was released for Android only. Firefox 64 for Android provides faster and more responsive scrolling and fixes for performance lags for users with installed password manager apps and an issue that resulted in the loading indicator using too much of the CPU and power.[387]
Firefox 65 was released on January 29, 2019 for both desktop and Android. 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; additional support for Flexbox (desktop); and the restoration of Chromecast controls to the location bar (Android).[388][389]
Firefox 66 was released on March 19, 2019 for both desktop and Android. 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, the enabling of AV1 support on 32-bit Windows and MacOS (desktop), and the addition of support to open files from external storage, such as an SD card (Android).[390][391]
Firefox 67 was released on May 21, 2019 for both desktop and Android. Among the many additions and changes were: Lowering priority of setTimeout during page load; suspending unused tabs; the ability to block known cryptominers and fingerprinters in the Custom settings of the Content Blocking preferences; improvement of keyboard accessibility; usability and security improvements in Private Browsing; protection against running older versions of the browser which can lead to data corruption and stability issues (desktop); a new Firefox search widget with voice input; and removal of the Guest Session feature to streamline user experience (Android).[392][393]
Release history of Firefox 60–67 | ||
---|---|---|
Version | Release date[23] | Release type and highlights[t 1] |
60.0 | May 9, 2018 | Official Firefox 60.0 release.[377][379]
Android
|
60.0.1 | May 16, 2018 | Off-cycle stability update.[394][395]
Android
|
60.0.2 | June 6, 2018 | Off-cycle security and stability update.[396][397]
Desktop
End-of-life 60.0.x product line on June 26, 2018. |
60.0esr | May 9, 2018 | Official Firefox 60.0 Extended Support Release (ESR).[378]
|
60.0.1esr | May 16, 2018 | Off-cycle stability update[398]
Same changelog of 60.0.1 |
60.0.2esr | June 6, 2018 | Off-cycle security and stability update.[399]
Same changelog of 60.0.2 |
60.1.0esr | June 26, 2018 | Regular security and stability update.[400]
|
60.2.0esr | September 5, 2018 | Regular security and stability update.[401]
|
60.2.1esr | September 21, 2018 | Off-cycle security and stability update.[402]
|
60.2.2esr | October 2, 2018 | Off-cycle security and stability update.[403]
|
60.3esr | October 23, 2018 | Regular security and stability update.[404]
|
60.4esr | December 11, 2018 | Regular security and stability update.[405]
|
60.5esr | January 28, 2019 | Regular security update.[406]
|
60.5.1esr | February 12, 2019 | Off-cycle security update.[407]
|
60.5.2esr | February 22, 2019 | Off-cycle stability update.[408]
|
60.6esr | March 19, 2019 | Regular security update.[409]
|
60.6.1esr | March 22, 2019 | Off-cycle security update.[410]
|
60.6.2esr | May 5, 2019 | Off-cycle stability update.[411]
|
60.6.3esr | May 8, 2019 | Off-cycle stability update.[412]
|
60.7esr | May 21, 2019 | Regular security and stability update.[413]
|
60.7.1esr | June 18, 2019 | Off-cycle security update.[414]
|
60.7.2esr | June 20, 2019 | Off-cycle security update.[415]
|
60.8esr | July 9, 2019 | Regular security update.[416]
|
60.9esr | September 3, 2019 | Regular security update.[417]
End-of-life 60.x.x product line on October 22, 2019. |
61.0 | June 26, 2018 | Official Firefox 61.0 release.[380][381]
Android
|
61.0.1 | July 5, 2018 | Desktop
Off-cycle stability update.[418]
|
61.0.2 | August 8, 2018 | Off-cycle stability update.[419][420]
Desktop
Android
End-of-life 61.0.x product line on September 5, 2018. |
62.0 | September 5, 2018 | Official Firefox 62.0 release.[382][383]
Android
|
62.0.1 | September 7, 2018 | Android
Off-cycle stability update.[421]
|
62.0.2 | September 21, 2018 | Off-cycle security and stability update.[422][423]
Android
|
62.0.3 | October 2, 2018 | Off-cycle security and stability update.[424][425]
Desktop
End-of-life 62.0.x product line on October 23, 2018. |
63.0 | October 23, 2018 | Official Firefox 63.0 release.[384][385]
Android
|
63.0.1 | October 31, 2018 | Desktop
Off-cycle stability update.[426]
|
63.0.2 | November 7, 2018 | Android
Off-cycle stability update.[427]
|
63.0.3 | November 15, 2018 | Desktop
Off-cycle stability update.[428]
End-of-life 63.0.x product line on December 11, 2018. |
64.0 | December 11, 2018 | Desktop
Official Firefox 64.0 release for desktop.[386]
|
64.0.1 | December 14, 2018 | Android
Official Firefox 64.0 release for Android.[387]
|
64.0.2 | January 9, 2019 | Off-cycle stability update.[429][430]
Desktop
Android
End-of-life 64.0.x product line on January 29, 2019. |
65.0 | January 28, 2019 | Official Firefox 65.0 release.[388][389]
Android
|
65.0.1 | February 12, 2019 | Off-cycle security and stability update.[431][432]
Desktop
Android
|
65.0.2 | February 28, 2019 | Desktop
Off-cycle stability update.[433]
End-of-life 65.0.x product line on March 19, 2019. |
66.0 | March 19, 2019 | Official Firefox 66.0 release.[390][391]
Android
|
66.0.1 | March 22, 2019 | Off-cycle security update.[434][435]
|
66.0.2 | March 27, 2019 | Off-cycle stability update.[436][437]
Desktop
Android
|
66.0.3 | April 10, 2019 | Desktop
Off-cycle stability update.[438]
|
66.0.4 | May 5, 2019 | Off-cycle stability update.[439][440]
|
66.0.5 | May 7, 2019 | Off-cycle stability update.[441][442]
End-of-life 66.0.x product line on May 21, 2019. |
67.0 | May 21, 2019 | Official Firefox 67.0 release.[392][393]
Desktop
Android
|
67.0.1 | June 4, 2019 | Desktop
Off-cycle stability update.[443]
|
67.0.2 | June 11, 2019 | Off-cycle stability update.[444][445]
Desktop
|
67.0.3 | June 18, 2019 | Off-cycle security update.[446][447]
|
67.0.4 | June 20, 2019 | Desktop
Off-cycle security update.[448]
End-of-life 67.0.x product line on July 9, 2019. |
Firefox 68 through 77
![](../I/Firefox_logo%252C_2019.svg.png.webp)
Firefox 68 and Firefox 68 ESR were released on July 9, 2019 for desktop (both) and Android (no ESR). 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 (desktop), 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).[449][450][451]
Firefox 68.1 was released on September 3, 2019 for Android only, with the addition of on-by-default Enhanced Tracking Protection, which enabled users to benefit from protections against ad, social, and analytics trackers.[452]
Firefox 69 was released on September 3, 2019 for desktop only. 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).[453]
Firefox 68.2 was released on October 22, 2019 for Android only, gaining the ability to sign in to a Firefox account from the onboarding experience as well as from the new tab page, and resolving a crash in the "Welcome" screen.[454]
Firefox 70 was released on October 22, 2019 for desktop only. 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.[455]
Firefox 68.3 was released on December 3, 2019 for Android only, gaining the updates to improve performance and stability.[456]
Firefox 71 was released on December 3, 2019 for desktop only. 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.[457]
Firefox 68.4 was released on January 7, 2020 for Android only, gaining various security fixes.[458]
Firefox 72 was released on January 7, 2020 for desktop only. 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.[459]
Firefox 68.5 was released on February 11, 2020 for Android only, updating messaging card on the homescreen to inform users about upcoming releases and gaining various security and stability fixes.[460]
Firefox 73 was released on February 11, 2020 for desktop only. Among the additions were: a page zoom feature for more than a decade that allows users to set the zoom level on a per-site basis, 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.[461]
Firefox 68.6 was released on March 10, 2020 for Android only, gaining various security and stability fixes.[462]
Firefox 74 was released on March 10, 2020 for desktop only. 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.[463] 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 concurrent pandemic, this change was rolled back.[464]
Firefox 68.7 was released on April 7, 2020 for Android only, gaining various security and stability fixes.[465]
Firefox 75 was released on April 7, 2020 for desktop only. 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.[466]
Firefox 68.8 was released on May 5, 2020 for Android only, gaining various security and stability fixes.[467]
Firefox 76 was released on May 5, 2020 for desktop only. 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.[468]
Firefox 68.9 was released on June 2, 2020 for Android only, gaining various security and stability fixes.[469]
Firefox 77 was released on June 2, 2020 for desktop only. 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.[470]
Firefox 68.10 was released on June 30, 2020 for Android only, gaining various security and stability fixes.[471]
Firefox 68.11 was released on July 27, 2020 for Android only, gaining various security and stability fixes. With the first stable release of Firefox Daylight (Fenix), Firefox 68.11 is the last release for Firefox for Android codenamed Fennec.[472]
Release history of Firefox 68–77 | ||
---|---|---|
Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications. | ||
Version | Release date[23] | Release type and highlights[t 1] |
68.0 | July 9, 2019 | Official Firefox 68.0 release.[449][451]
Desktop
Android
|
68.0.1 | July 18, 2019 | Off-cycle stability update.[473]
Desktop
|
68.0.2 | August 14, 2019 | Off-cycle security and stability update.[474][475]
Desktop
Android
End-of-life 68.0.x product line on September 3, 2019. |
68.1 | September 3, 2019 | Regular security update.[452]
Android
|
68.1.1 | September 13, 2019 | Off-cycle stability update.[476]
Android
|
68.2.0 | October 22, 2019 | Regular security and stability update.[454]
Android
|
68.2.1 | November 13, 2019 | Off-cycle stability update.[477]
Android
|
68.3.0 | December 3, 2019 | Regular security and stability update.[456]
Android
|
68.4.0 | January 7, 2020 | Regular security update.[458]
Android
|
68.4.1 | January 8, 2020 | Off-cycle security update.[478]
Android
|
68.4.2 | January 20, 2020 | Off-cycle stability update.[479]
Android
|
68.5.0 | February 11, 2020 | Regular security and stability update.[460]
Android
|
68.6.0 | March 10, 2020 | Regular security and stability update.[462]
Android
|
68.7.0 | April 7, 2020 | Regular security and stability update.[465]
Android
|
68.8.0 | May 5, 2020 | Regular security and stability update.[467]
Android
|
68.8.1 | May 11, 2020 | Off-cycle stability update.[480]
Android
|
68.9.0 | June 2, 2020 | Regular security and stability update.[469]
Android
|
68.10.0 | June 30, 2020 | Regular security and stability update.[471]
Android
|
68.10.1 | July 7, 2020 | Off-cycle security update.[481]
Android
|
68.11.0 | July 27, 2020 | Regular security and stability update.[472]
Android
|
68.0esr | July 9, 2019 | Official Firefox 68.0 Extended Support Release (ESR).[450]
|
68.0.1esr | July 18, 2019 | Off-cycle stability update.[482]
|
68.0.2esr | August 14, 2019 | Off-cycle security and stability update.[483]
|
68.1esr | September 3, 2019 | Regular security and stability update.[484]
|
68.2esr | October 22, 2019 | Regular security and stability update.[485]
|
68.3esr | December 3, 2019 | Regular security and stability update.[486]
|
68.4esr | January 7, 2020 | Regular security update.[487]
|
68.4.1esr | January 8, 2020 | Off-cycle security update.[488]
|
68.4.2esr | January 20, 2020 | Off-cycle stability update.[489]
|
68.5esr | February 11, 2020 | Regular security and stability update.[490]
|
68.6esr | March 10, 2020 | Regular security and stability update.[491]
|
68.6.1esr | April 3, 2020 | Off-cycle security update.[492]
|
68.7esr | April 7, 2020 | Regular security and stability update.[493]
|
68.8esr | May 5, 2020 | Regular security and stability update.[494]
|
68.9esr | June 2, 2020 | Regular security and stability update.[495]
|
68.10esr | June 30, 2020 | Regular security and stability update.[496]
|
68.11esr | July 28, 2020 | Regular security and stability update.[497]
|
68.12esr | August 25, 2020 | Regular security update.[498]
End-of-life 68.x.x product line on September 22, 2020. |
69.0 | September 3, 2019 | Official Firefox 69.0 release.[453]
Desktop
|
69.0.1 | September 18, 2019 | Off-cycle security and stability update.[499]
Desktop
|
69.0.2 | October 3, 2019 | Off-cycle stability update.[500]
Desktop
|
69.0.3 | October 10, 2019 | Off-cycle stability update.[501]
Desktop
End-of-life 69.0.x product line on October 22, 2019. |
70.0 | October 22, 2019 | Official Firefox 70.0 release.[455]
Desktop
|
70.0.1 | October 31, 2019 | Off-cycle stability update.[502]
Desktop
End-of-life 70.0.x product line on December 3, 2019. |
71.0 | December 3, 2019 | Official Firefox 71.0 release.[457]
Desktop
End-of-life 71.0.x product line on January 7, 2020. |
72.0 | January 7, 2020 | Official Firefox 72.0 release.[459]
Desktop
|
72.0.1 | January 8, 2020 | Off-cycle security update.[503]
Desktop
|
72.0.2 | January 20, 2020 | Off-cycle stability update.[504]
Desktop
End-of-life 72.0.x product line on February 11, 2020. |
73.0 | February 11, 2020 | Official Firefox 73.0 release.[461]
Desktop
|
73.0.1 | February 18, 2020 | Off-cycle stability update.[505]
Desktop
End-of-life 73.0.x product line on March 10, 2020. |
74.0 | March 10, 2020 | Official Firefox 74.0 release.[463]
Desktop
|
74.0.1 | April 3, 2020 | Off-cycle security update.[506]
Desktop
End-of-life 74.0.x product line on April 7, 2020. |
75.0 | April 7, 2020 | Official Firefox 75.0 release.[466]
End-of-life 75.0.x product line on May 5, 2020. |
76.0 | May 5, 2020 | Official Firefox 76.0 release.[468]
|
76.0.1 | May 8, 2020 | Off-cycle stability update.[507]
Desktop
End-of-life 76.0.x product line on June 2, 2020. |
77.0 | June 2, 2020 | Official Firefox 77.0 release.[470]
Desktop
|
77.0.1 | June 3, 2020 | Off-cycle stability update.[508]
Desktop
End-of-life 77.0.x product line on June 30, 2020. |
Firefox 78 through 90
Firefox 78 and Firefox 78 ESR were released on June 30, 2020 for desktop. 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.[509][510]
Firefox 79 was released on July 28, 2020 for desktop, and on August 27 for Android. 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 (desktop); the enabling of Enhanced Tracking Protection by default, the ability to switch to Dark Mode, and video multitasking with Picture-in-Picture mode (Android).[511][512]
Firefox 80 was released on August 25, 2020 for desktop, and on August 31 for Android. 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 (desktop); and the return of the Back button (Android).[513][514]
Firefox 81 was released on September 22, 2020 for desktop and Android. 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 HTML5 audio/video controls (desktop); and the introduction of Firefox Daylight (Android).[515][516]
Firefox 82 was released on October 20, 2020 for desktop and Android. Among the many additions were: a number of improvements that make watching videos more delightful; improved performance on both page loads and start up time; saving a webpage to Pocket from the Firefox toolbar (desktop); the ability to automatically purge cookies from sites not visited in 30 days; and better support for opening links in Firefox from third-party apps (Android).[517][518]
Firefox 83 was released on November 17, 2020 for desktop and Android. 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 (desktop); and newly supported add-ons: FoxyProxy, Bitwarden, AdGuard AdBlocker, Tomato Clock, LeechBlock NG, Web Archives, and Ghostery (Android).[519][520]
Firefox 84 was released on December 15, 2020 for desktop and Android. 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 (desktop); 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; and improvement of scrolling accuracy and control and fix of cases of unexpected scroll acceleration (Android).[521][522]
Firefox 85 was released on January 26, 2021 for desktop and Android. 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 (desktop).[523][524]
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Release history of Firefox 78–90 | ||
---|---|---|
Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications. | ||
Version | Release date[23] | Release type and highlights[t 1] |
78.0 | June 30, 2020 | Official Firefox 78.0 release.[509]
Desktop
|
78.0.1 | July 1, 2020 | Off-cycle stability update.[525]
Desktop
|
78.0.2 | July 9, 2020 | Off-cycle security and stability update.[526]
Desktop
End-of-life 78.0.x product line on July 28, 2020. |
78.0esr | June 30, 2020 | Official Firefox 78.0 Extended Support Release (ESR).[510]
|
78.0.1esr | July 1, 2020 | Off-cycle stability update.[527]
|
78.0.2esr | July 9, 2020 | Off-cycle security and stability update.[528]
|
78.1esr | July 28, 2020 | Regular security and stability update.[529]
|
78.2esr | August 25, 2020 | Regular security and stability update.[530]
|
78.3esr | September 22, 2020 | Regular security and stability update.[531]
|
78.3.1esr | October 1, 2020 | Off-cycle stability update.[532]
|
78.4esr | October 20, 2020 | Regular security and stability update.[533]
|
78.4.1esr | November 10, 2020 | Off-cycle security update.[534]
|
78.5esr | November 17, 2020 | Regular security and stability update.[535]
|
78.6esr | December 15, 2020 | Regular security and stability update.[536]
|
78.6.1esr | January 6, 2021 | Off-cycle security and stability update.[537]
|
78.7esr | January 26, 2021 | Regular security and stability update.[538]
|
78.8esr | February 23, 2021 | [539] |
78.9esr | March 23, 2021 | [539] |
78.10esr | April 20, 2021 | [539] |
78.11esr | May 18, 2021 | [539] |
78.12esr | June 15, 2021 | [539] |
78.13esr | July 13, 2021 | [539] |
78.14esr | August 10, 2021 | [539] |
78.15esr | September 7, 2021 | [539]
End-of-life 78.x.x product line on October 5, 2021. |
79.0 | July 28, 2020 (desktop); August 27, 2020 (Android) |
Official Firefox 79.0 release.[511][512]
Desktop
Android
End-of-life 79.0.x product line on August 25, 2020. |
80.0 | August 25, 2020 (desktop); August 31, 2020 (Android) |
Official Firefox 80.0 release.[513][514]
Desktop
Android
|
80.0.1 | September 1, 2020 | Off-cycle stability update.[540]
Desktop
End-of-life 80.0.x product line on September 22, 2020. |
81.0 | September 22, 2020 | Official Firefox 81.0 release.[515][516]
Desktop
Android
|
81.0.1 | October 1, 2020 | Off-cycle stability update.[541]
Desktop
|
81.0.2 | October 13, 2020 | Off-cycle stability update.[542]
Desktop
End-of-life 81.0.x product line on October 20, 2020. |
82.0 | October 20, 2020 | Official Firefox 82.0 release.[517][518]
Desktop
Android
|
82.0.1 | October 27, 2020 | Off-cycle stability update.[543]
Desktop
|
82.0.2 | October 28, 2020 | Off-cycle stability update.[544]
Desktop
|
82.0.3 | November 10, 2020 | Off-cycle security update.[545]
Desktop
End-of-life 82.0.x product line on November 17, 2020. |
83.0 | November 17, 2020 | Official Firefox 83.0 release.[519][520]
Desktop
Android
End-of-life 83.0.x product line on December 15, 2020. |
84.0 | December 15, 2020 | Official Firefox 84.0 release.[521][522]
Desktop
Android
|
84.0.1 | December 22, 2020 | Off-cycle stability update.[546]
Desktop
|
84.0.2 | January 6, 2021 | Off-cycle security update.[547]
Desktop
End-of-life 84.0.x product line on January 26, 2021. |
85.0 | January 26, 2021 | Official Firefox 85.0 release.[523][524]
Desktop
Android
End-of-life 85.0.x product line on February 23, 2021. |
86.0b1 | January 25, 2021 | First Firefox 86.0 Developer Edition build.[539] |
86.0b1 | January 25, 2021 | First Firefox 86.0 Beta release.[539] |
86.0 | February 23, 2021 | Official Firefox 86.0 release.[539]
End-of-life 86.0.x product line on March 23, 2021. |
87.0a1 | January 25, 2021 | First Firefox 87.0 Nightly build.[539] |
87.0b1 | February 22, 2021 | First Firefox 87.0 Developer Edition build.[539] |
87.0b1 | February 22, 2021 | First Firefox 87.0 Beta release.[539] |
87.0 | March 23, 2021 | Official Firefox 87.0 release.[539]
End-of-life 87.0.x product line on April 20, 2021. |
88.0a1 | February 22, 2021 | First Firefox 88.0 Nightly build.[539] |
88.0b1 | March 22, 2021 | First Firefox 88.0 Developer Edition build.[539] |
88.0b1 | March 22, 2021 | First Firefox 88.0 Beta release.[539] |
88.0 | April 20, 2021 | Official Firefox 88.0 release.[539]
End-of-life 88.0.x product line on May 18, 2021. |
89.0a1 | March 22, 2021 | First Firefox 89.0 Nightly build.[539] |
89.0b1 | April 19, 2021 | First Firefox 89.0 Developer Edition build.[539] |
89.0b1 | April 19, 2021 | First Firefox 89.0 Beta release.[539] |
89.0 | May 18, 2021 | Official Firefox 89.0 release.[539]
End-of-life 89.0.x product line on June 15, 2021. |
90.0a1 | April 19, 2021 | First Firefox 90.0 Nightly build.[539] |
90.0b1 | May 17, 2021 | First Firefox 90.0 Developer Edition build.[539] |
90.0b1 | May 17, 2021 | First Firefox 90.0 Beta release.[539] |
90.0 | June 15, 2021 | Official Firefox 90.0 release.[539]
End-of-life 90.0.x product line on July 13, 2021. |
Firefox 91 through 99
Legend: | Former release | Extended Support Release (ESR) | Current | Beta | Future official release | Future test release | Top |
---|
Release history of Firefox 91–99 | ||
---|---|---|
Note: Dates in the future indicate a scheduled release date; they are subject to change in the event of unanticipated complications. | ||
Version | Release date[23] | Release type and highlights[t 1] |
91.0a1 | May 17, 2021 | First Firefox 91.0 Nightly build.[539] |
91.0b1 | June 14, 2021 | First Firefox 91.0 Developer Edition build.[539] |
91.0b1 | June 14, 2021 | First Firefox 91.0 Beta release.[539] |
91.0 | July 13, 2021 | Official Firefox 91.0 release.[539]
End-of-life 91.0.x product line on August 10, 2021. |
91.0esr | July 13, 2021 | Official Firefox 91.0 Extended Support Release (ESR).[539] |
91.1esr | August 10, 2021 | [539] |
91.2esr | September 7, 2021 | [539] |
91.3esr | October 5, 2021 | [539] |
91.4esr | November 1, 2021 | [539] |
91.5esr | December 7, 2021 | [539] |
91.6esr | January 11, 2022 | [539] |
92.0a1 | June 14, 2021 | First Firefox 92.0 Nightly build.[539] |
92.0b1 | July 12, 2021 | First Firefox 92.0 Developer Edition build.[539] |
92.0b1 | July 12, 2021 | First Firefox 92.0 Beta release.[539] |
92.0 | August 10, 2021 | Official Firefox 92.0 release.[539]
End-of-life 92.0.x product line on September 7, 2021. |
93.0a1 | July 12, 2021 | First Firefox 93.0 Nightly build.[539] |
93.0b1 | August 9, 2021 | First Firefox 93.0 Developer Edition build.[539] |
93.0b1 | August 9, 2021 | First Firefox 93.0 Beta release.[539] |
93.0 | September 7, 2021 | Official Firefox 93.0 release.[539]
End-of-life 93.0.x product line on October 5, 2021. |
94.0a1 | August 9, 2021 | First Firefox 94.0 Nightly build.[539] |
94.0b1 | September 6, 2021 | First Firefox 94.0 Developer Edition build.[539] |
94.0b1 | September 6, 2021 | First Firefox 94.0 Beta release.[539] |
94.0 | October 5, 2021 | Official Firefox 94.0 release.[539]
End-of-life 94.0.x product line on November 2, 2021. |
95.0a1 | September 6, 2021 | First Firefox 95.0 Nightly build.[539] |
95.0b1 | October 4, 2021 | First Firefox 95.0 Developer Edition build.[539] |
95.0b1 | October 4, 2021 | First Firefox 95.0 Beta release.[539] |
95.0 | November 2, 2021 | Official Firefox 95.0 release.[539]
End-of-life 95.0.x product line on December 7, 2021. |
96.0a1 | October 4, 2021 | First Firefox 96.0 Nightly build.[539] |
96.0b1 | November 1, 2021 | First Firefox 96.0 Developer Edition build.[539] |
96.0b1 | November 1, 2021 | First Firefox 96.0 Beta release.[539] |
96.0 | December 7, 2021 | Official Firefox 96.0 release.[539]
End-of-life 96.0.x product line on January 11, 2022. |
97.0a1 | November 1, 2021 | First Firefox 97.0 Nightly build.[539] |
97.0b1 | December 6, 2021 | First Firefox 97.0 Developer Edition build.[539] |
97.0b1 | December 6, 2021 | First Firefox 97.0 Beta release.[539] |
97.0 | January 11, 2022 | Official Firefox 97.0 release.[539] |
98.0a1 | December 6, 2021 | First Firefox 98.0 Nightly build.[539] |
98.0b1 | January 10, 2022 | First Firefox 98.0 Developer Edition build.[539] |
98.0b1 | January 10, 2022 | First Firefox 98.0 Beta release.[539] |
99.0a1 | January 10, 2022 | First Firefox 99.0 Nightly build.[539] |
CPU architectures
x86 family
Native 64-bit builds are officially supported on Linux, macOS, and Windows (since version 42).[548]
Mozilla made Firefox for 64-bit Linux a priority with the release of Firefox 4, labeling it as tier 1 priority.[549] Since being labeled tier 1, Mozilla has been providing official 64-bit releases for its browser for Linux.[550][551] 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.[552][553]
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.[554] As of April 19, 2017, Firefox 53 has dropped support for 32-bit macOS.[555]
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[556] but later reversed the decision.[557] As of April 2015, 64-bit Windows builds are available as 38.0 Beta[558] and newer. 64-bit builds for Windows are officially supported as of November 2015 with the release of Firefox 42. All NPAPI plugins except Adobe Flash Player are blacklisted and unsupported on both 32-bit and 64-bit versions.[559]
Other CPU architectures
Besides x86, Firefox also supported other CPU architectures including ARMv7, SPARC, PowerPC, and 68k on different tiers.[560] 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
![](../I/e34158b06002c1089d8acf3c78a7d8f6.png.webp)
Release compatibility
Notes
- In March 2014, the Windows Store app version of Firefox was cancelled, although there is a beta release.[581]
- SSE2 instruction set support is required for 49.0 and later for Windows and 53.0 and later for Linux, IA-32 support only applies to superscalar processors.
Operating system | Latest stable version | Support status | |
---|---|---|---|
Android (including Android-x86) |
5.0 and later | [582] | 85.1.2 (x64)2018– |
[582] | 85.1.2 (ARM64)2017– | ||
[582] | 85.1.2 (IA-32 and ARMv7)2014– | ||
4.1–4.4 | 68.11.0 (x64)[583] | 2018–2020 | |
68.11.0 (IA-32) | 2013–2020 | ||
68.11.0 (ARMv7) | 2012–2020 | ||
4.0 | 55.0.2 (IA-32)[584][585] | 2013–2017 | |
55.0.2 (ARMv7) | 2011–2017 | ||
3.0–3.2 | 45.0.2 (ARMv7)[584] | 2011–2016 | |
2.3 | 47.0 (ARMv7)[584][586] | ||
2.2–4.3 | 31.3.0esr (ARMv6) | 2012–2015 | |
2.2 | 31.0 (ARMv7)[587] | 2011–2014 | |
2.1 | 19.0.2 (ARMv6) | 2012–2013 | |
19.0.2 (ARMv7) | 2011–2013 | ||
2.0 | 6.0.2 (ARMv7) | 2011 | |
Firefox OS | 2.2 | 35/36/37 | 2015 |
2.1 | 33/34 | 2014–2015 | |
2.0 | 31/32 | ||
Maemo | 7.0.1 | 2010–2011 |
- Notes
- Firefox for iOS is not listed in this table as its version numbers would be misleading; it uses 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 | 10 and later, OpenSolaris | 78.6.0esr (IA-32,x64,SPARC V9) | 2005– | |
8–9 | 2.0.0.20 (IA-32 and SPARC V9) | 2004–2008 | ||
HP-UX | 11i v2–v3 | 3.5.9 (IA-64,PA-RISC) | N/A | |
OpenBSD | -current | 84.0.1 (IA-32,x64,ARM64) | 2019– | |
78.6.0esr (IA-32,x64,ARM64) | ||||
-stable | 6.8 | 78.6.0esr (IA-32,x64,ARM64) | 2020– | |
5.8 | 38.7.1esr (PPC) | 2015–2016 | ||
5.7 | 31.6.0esr (SPARC V9) | 2015 |
See also
Explanatory notes
- 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.
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Further reading
- Eich, Brendan (2005). "Branch Plan". Mozilla Wiki. Retrieved December 21, 2005.
External links
- Mozilla Firefox release notes for each version
- Mozilla Firefox developer release notes for each version
- Releases from MozillaWiki
- History of the Mozilla logo by Jamie Zawinski
- ben. "Where Did Firefox Come From?". MozillaZine. Archived from the original on July 17, 2011.
- Firefox browser for web 2.0 age, BBC News