All versions Firefox Read more. System Requirements. Apps Selected For You. Google Chrome Dev. Google Chrome. Maxthon Cloud Browser. User Rating: Rate It! No Virus. No Spyware. You can download Firefox for PC offline installer from the site by clicking on the free download button. Check out the new version, which is first of several releases called Firefox Quantum , getting you to the things you love and the stuff you need faster than ever before, along with a fresh new look.
Firefox 5 was released on June 21, ,  three months after the major release of Firefox 4. Firefox 5 is the first release in Mozilla's new rapid release plan, matching Google Chrome 's rapid release schedule and rapid version number increments.
Firefox 7. Firefox 8 was released on November 8,  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.
It also features a large list of bug fixes. End-of-life 5. End-of-life 6. End-of-life 7. End-of-life 8. End-of-life 9. 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.
The add-on developer is able to alert Mozilla that the add-on is incompatible, overriding compatibility with version 10 or later. This new rule also does not apply to themes. Firefox 11 was released on March 13, Firefox 12 was released on April 24, Firefox 12 introduced few new features, but it made many changes and laid the ground work for future releases.
Firefox 13 was released on June 5, Firefox 13 adds and updates several features, such as an updated new tab  and home tab page. The new tab page will display nine of the user's most visited websites, along with a cached image. Firefox 14 was released on June 26, for mobile devices only, just outside the regular release schedule of the web browser. Mozilla uses this information to improve the responsiveness of Firefox for future releases.
Mozilla wants to reduce potential problems that could arise through the unwanted use of third-party applications malware , freezing, etc. Firefox 15 was released on August 28, with a " Responsive Design View " developer tool,  adds support for the Opus audio format , and adds preliminary native PDF support disabled by default.
Firefox 15 introduced silent updates, an automatic update that will update Firefox to the latest version without notifying the user,  a feature that the web browsers Google Chrome and Internet Explorer 8 and above have already implemented,   although the user was able to disable that function. There were improvements made to startup speed when a user wants to restore a previous session.
Support for web apps was added. Opus audio format is now enabled by default. The roll-out of Firefox 16 revision End-of-life Official Firefox Mobile Official Firefox Desktop Firefox 17 is the first version of the browser that uses SpiderMonkey Firefox 18 was released on January 8, Firefox 19 was released on February 19, , featuring a built-in PDF viewer.
The release includes support for the new scrollbar style in Mac OS X Firefox 25 was released on October 29, Firefox 25 Nightly was at one point slated to include the Australis theme, but Australis did not actually land on Nightly until Firefox 28,  did not make it to Firefox 28 Aurora channel, and was finally available with Firefox Firefox 26 was released on December 10, Firefox 26 changed the behavior of Java plugins to "click-to-play" mode instead of automatically running them.
It also added support for H. Firefox 27 was released on February 4, Also, it brings many bug fixes, security improvements, and developer-related changes. Firefox 28 was released on March 18, Firefox 29 was released on April 29, and includes the Australis interface, it also removes the add-on bar and moves its content to the navigation bar. Firefox 30 was released on June 10, It adds support for GStreamer 1.
Off-cycle stability mobile update. Both versions added search field on the new tab page and were improved to block malware from downloaded files, along with other new features. Firefox Firefox 32 was released on September 2, Firefox 33 was released on October 14, It now has off-main-thread compositing OMTC enabled by default on Windows which brings responsiveness improvements ,  OpenH support, search suggestions on about:home and about:newtab, address bar search improvements, session restore reliability improvements, and other changes.
Firefox 34 was released on December 1, It also disables SSLv3 , and enables the ability to recover from a locked Firefox process and to switch themes and personas directly in the customization mode. Firefox 35 was released on January 13, It brings support for a room-based conversations model to the Firefox Hello chat service, and other functions, it also includes security fixes.
Firefox 37 was released on March 31, , bringing a heartbeat user rating system, which provides user feedback about the Firefox, and improved protection against website impersonation via OneCRL centralized certificate revocation.
Desktop . Android . Off-cycle stability update. Official Firefox Both Firefox 38 and Firefox 38 ESR were released on May 12, , with new tab-based preferences, Ruby annotation support and availability of WebSockets in web workers, along with the implementation of the BroadcastChannel API and other features and security fixes.
Firefox 40 was released on August 11, 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. Firefox 41 was released on September 22, 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. Firefox 42 was released on November 3, for desktop and Android. Firefox 43 was released on December 15, for desktop and Android.
Among many additions are the availability of the bit version for Windows 7 and above, a new strict blocklist, and audio indicators on Android. Firefox 44 was released on January 26, for desktop and Android. Among many additions are the improvement of warning pages for certificate errors and untrusted connections, enabling of H. Off-cycle security and stability update. Among many additions were Instant Browser sharing through Hello, the addition of Guarani locale, the ability to filter snapshot output in memory tool, and the removal of the Tab Groups panorama feature.
Firefox 46 was released on April 26, for both desktop and Android. Firefox 47 was released on June 7, for both desktop and Android. It is also the last Firefox version to support Android 2. Firefox 48 was released on August 2, 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 49 was released on September 20, 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. Firefox 50 was released on November 15, for both desktop and Android. Firefox 51 was released on January 24, for both desktop and Android. An important aspect of Firefox ESR 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.
Firefox 53 was released on April 19, 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 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.
Firefox 54 was released on June 13, 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.
Firefox 55 was released on August 8, 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. Firefox 56 was released on September 28, 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. Another change was the introduction of the mozlz4 format, a proprietary variant of the lz4 compression format. 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, for desktop and Android with the name Firefox Quantum. Firefox 57 no longer supports legacy add-ons using XUL technologies.
Firefox 58 was released on January 23, 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.
Firefox 59 was released on March 13, 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.
Firefox 57 "Quantum" . Firefox 61 was released on June 26, 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.
Firefox 62 was released on September 5, for both desktop and Android. Firefox 63 was released on October 23, 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.
Official Download. New Apps Browsers. Get a Firefox Account Check out the Benefits. On Android and iOS. Made with respect Firefox browsers put your privacy first — and always have. Pocket Save quality content from anywhere. Search for partially selected link text from context menu Removal of the CAPS infrastructure for specifying site-specific permissions via capability. Most notably, attempts to use this functionality to grant access to the clipboard will no longer work. Developer Tools: Add-on Debugger learn more.