A tarball of the Firefox 3 source code is available for download. The latest development code can be obtained by cvs. Firefox-specific source is in "mozilla/browser", "mozilla/toolkit", and "mozilla/chrome". Please follow the build instructions.
Firefox 20 was released on April 2, 2013, introduced a panel-based download manager,[105][106] along with H.264 decoding on the 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.
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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.[160] 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.[161]
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 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).[265][266]
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).[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.[311][312]
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).[451][452][453]
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).[455]
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).[523][524]
Firefox 93 was released on October 5, 2021, for desktop and Android. 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 (desktop); 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).[582][583]
Firefox 94 was released on November 2, 2021, for desktop and Android. 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 (desktop); and the new Inactive Tabs feature (Android).[584][585]
Firefox 97 was released on February 8, 2022, for desktop and Android. 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 (desktop); and the addition of a new prompt when users attempt to leave private browsing with active downloads (Android).[590][591]
Firefox 98 was released on March 8, 2022, for desktop and Android. 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 (desktop); the ability to change Wallpapers on Homepage; and the ability to clear cookies and website data for a single domain (Android).[592][593]
Firefox 101 was released on May 31, 2022, for desktop and Android. 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() (desktop); and added support for using the magnifier on Android 9+ for positioning the cursor in forms on web pages (Android).[598][599]
Firefox 102 and Firefox 102 ESR were released on June 28, 2022, for desktop and Android. Among the many additions and removals were: the ability to disable automatic opening of the download panel every time a new download starts; the mitigation of query parameter tracking when navigating sites in ETP strict mode; the availability of subtitles and captions for Picture-in-Picture (PiP) at HBO Max, Funimation, Dailymotion, Tubi, Disney+ Hotstar, and SonyLIV; improved security by moving audio decoding into a separate process with stricter sandboxing, thus improving process isolation; the ability to filter style sheets in the Style Editor tab of developer tools; TransformStream and ReadableStream.pipeThrough being transferable along with WritableStream; support for Content-Security-Policy (CSP) integration with WebAssembly (desktop); and credit card autofill request to save and update card information when filling out forms (Android).[637][638][639]
Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here: www.mozilla.org/privacy/firefox/
Firefox Aurora is the pre-Beta build of Firefox and is now available for download from the Firefox Aurora release channel. The free download includes new features for the FirefoxDeveloper Tools. Firefox implemented these new tools based oncomments from web developers and possibly in an attempt to offer an alternativeto Google web developer tools. 2ff7e9595c
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