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| 0.1 | 23 กันยายน 2545 | 1.2 |  รุ่นแรก |
| 0.2 | 1 ตุลาคม 2545 | 1.2 |  Web form auto-complete  Sidebar is back Downloads Sidebar  Bookmarks Sidebar  History Sidebar  เพิ่มการจัดการส่วนขยาย (Extension Management)  ปรับปรุงแถบเครื่องมือ  แถบค้นหา (Search Bar)  Improved preference defaults  ความเร็วที่ดีขึ้น (Speed Improvements)  Ctrl+Mousewheel to resize fonts  Bug fixes |
| 0.3 | 14 ตุลาคม 2545 | 1.2 |  Image Blocking  Pop-up Blocking Whitelist  Bookmarks Changes  Global Go Menu and Other Menu Changes  Tabbed Browsing Improvements  Size and Speed Improvements  Bug fixes |
| 0.4 | 19 ตุลาคม 2545 | 1.3 |  Improvements to pop-up blocking  Improvements to toolbar customization  Improvements to tabbed browsing and shortcut keys  Type ahead find returns  Address bar gets smarter  Themes  Bug fixes |
| 0.5 | 7 ธันวาคม 2545 | 1.3 |  Multiple homepages  Intellimouse 5-button support  Sidebar remembers its state across sessions  Download fixes  History improvements  Accessibility improvements  Size and memory reduction  Performance improvements  Stability improvements  Better Windows appearance  Many more new themes  Many bug fixes |
| 0.6 | 17 พฤษภาคม 2546 | 1.5 |  New default theme  Redesigned Preferences window  Improved Privacy Options  Improved Bookmarks  Talkback enabled to tell Mozilla why the browser crashed  Automatic Image Resizing  Smooth Scrolling  Access to more preferences through about:config  Custom profile save location  Mac OS X compatibility  Lots of bug fixes |
| 0.7 | 15 ตุลาคม 2546 | 1.5 |  Advanced preferences panel  Download/helper apps preferences panel  Cookie whitelisting  New password manager (all passwords now stored encrypted)  Web panels (like Mozilla's sidebar panels)  Alternate stylesheet support (through a status bar button)  Send Page, Send Link, and Send Image menu items  Autoscroll  Lots of bug fixes and other small improvements |
| 0.8 | 9 กุมภาพันธ์ 2547 | 1.6 |  Windows Installer  Download Manager  New Add Bookmark Dialog  Work Offline  Better Handling of File Types  New XPInstall Frontend  New default theme for Mac OS X  Lots of bug fixes and improvements  |
| 0.9 | 15 พฤษภาคม 2547 | 1.7 |  New Default Theme  Comprehensive Data Migration from Internet Explorer  Extension/Theme Manager  Smaller Download  Online help system  Lots of bug fixes and improvements |
| 1.0 | 9 พฤศจิกายน 2547 | 1.7 |  Better Tabbed Browsing Controls  Horde of bug fixes |
| 1.0.8 | 13 เมษายน 2549 | 1.7 |  Security fixes  Bug fixes  Stability fixes |
| 1.5 | 29 พฤศจิกายน 2548 | 1.8 |  Dropped support for Mac OS X v10.1, minimum is now Mac OS X v10.2  Private data clear data  Back and forward now fast  Improved web standards Improved HTML  Improved CSS  Improved HTTP  Improved JavaScript/DOM  SVG compatibility  Huge amount of bug fixes |
| 1.5.0.12 | 30 พฤษภาคม 2550 | 1.8 |  Last release for Windows 95  Bug fixes  Stability fixes  Security fixes |
| 2.0 | 24 ตุลาคม 2549 | 1.8.1 |  Visual Refresh of main theme  Built-in phishing protection  Enhanced search capabilities  Improved tabbed browsing  Resuming your browsing session (session restore)  Previewing and subscribing to Web feeds  Inline spell checking  Live Web Titles  Improved Add-ons manager  JavaScript 1.7  Extended search plugin format (predictive search)  Improved security with extension system  Client-side session and persistent storage  SVG text support  New Windows installer |
| 2.0.0.20 | 18 ธันวาคม 2551 | 1.8.1 |  Last release for Windows NT 4.0, 98, Me.  Bug fixes  Security fixes  Stability fixes |
| 3.0 | 17 มิถุนายน 2551 | 1.9 |  One-click site info  Malware Protection  New Web Forgery Protection page  New SSL error pages  Add-ons and Plugin version check  Secure add-on updates  Anti-virus integration with download manager  Vista Parental Controls  Effective top-level domain (eTLD) service better restricts cookies and other restricted content to a single domain.  Better protection against cross-site JSON data leaks.  Easier password management – save passwords after successful login  Simplified add-on installation from third party’s  New Download Manager  Resumable downloading after closing the browser  Full page zoom  Podcasts and Videocasts can be associated with your media playback tools  Tab scrolling and quickmenu  Save what you were doing - Firefox 3 will prompt users to save tabs on exit.  Optimized Open in Tabs behavior  Location and Search bar size can now be customized with a simple resizer item.  Text selection improvements (select multiple selections of text)  Find toolbar: the Find toolbar now opens with the current selection.  Plugin management with the add-on manager  Improved integration with Windows  Improved integration with the Mac  Integration with Linux GTK theme  Bookmark star button  Bookmark tags  Smart Location Bar  Library of bookmarks, history, etc.  Smart Bookmark Folders  Web-based protocol handlers for mail:to  Download & Install Add-ons from the Add-on manager  Easy to use Download Actions  New graphics and font handling in Gecko 1.9 provide rendering improvements in: CSS  SVG  Display of fonts with ligatures and complex scripts Color management of images with capabilities  Offline support for web applications  Improved speed  Reduced memory usage  Increased reliability  25000 total code changes  Security fixes  Stability fixes |
| 3.0.19 | 30 มีนาคม 2553 | 1.9 |  Fixed several security problems.  Fixed several stability issues. |
| 3.5 | 30 มิถุนายน 2552 | 1.9.1 |  Support for the HTML5 <video> and <audio> elements including native support for Ogg Theora video and Vorbis audio  Improved tools for controlling your private data, including a Private Browsing Mode  Better web application performance using the new TraceMonkey JavaScript engine  The ability to share your location with websites using Location Aware Browsing  Support for native JSON, and web worker threads  Improvements to the Gecko layout engine, including speculative parsing for faster content rendering  Support for new web technologies such as: Downloadable fonts  CSS media queries  New transformations and properties  JavaScript query selectors  HTML5 local storage and offline application storage  <canvas> text  ICC profiles  SVG transforms. |
| 3.5.19 | 28 เมษายน 2554 | 1.9.1 |  Fixed several security issues  Fixed several stability issues |
| 3.6 | 21 มกราคม 2553 | 1.9.2 |  Support for Persona themes  Protection from out-of-date plugins to keep users safer as they browse.  Open, native video can now be displayed full screen and supports poster frames.  Improved JavaScript performance, overall browser responsiveness, and startup time.  The ability for web developers to indicate that scripts should run asynchronously to speed up page load times.  Continued support for downloadable web fonts using the new WOFF font format.  Support for new CSS attributes such as gradients, background sizing, and pointer events.  Support for new DOM and HTML5 specifications including the Drag & Drop API and the File API, which allow for more interactive web pages.  Changes to how third-party software can integrate with Firefox in order to prevent crashes. |
| 3.6.28 | 13 มีนาคม 2555 | 1.9.2 |  Last release for Mac OS X Tiger and PowerPC Macs  Added Out-of-process plugins  Fixed several security issues  Fixed several stability issues |
| 4.0 | 22 มีนาคม 2554 | 2.0 |  Firefox 4 is available in over 80 languages  Uses JägerMonkey, a faster JavaScript engine  Support for Do Not Track ("DNT") header that allows users to opt out of behavioral advertising  Firefox Sync is included by default  Graphic rendering is now hardware-accelerated using Direct3D 9 (Windows XP), Direct3D 10 (Windows Vista & 7), and OpenGL on Mac OS  Direct2D Hardware Acceleration is now on by default for Windows 7 users  WebGL is enabled on all platforms that have a capable graphics card with updated drivers  Native support for the HD HTML5 WebM video format, hardware accelerated where available  Firefox button has a new look for Windows Vista and Windows 7 users  Tabs are now on top by default on Windows, Mac OS X, and Linux  You can search for and switch to already open tabs in the Smart Location Bar  The stop and reload buttons have been merged into a single button on Windows, Mac OS X, and Linux  The Bookmarks Toolbar has been replaced with a Bookmarks Button by default (you can switch it back if you'd like)  Crash protection when there is a crash in Adobe Flash Player, Apple QuickTime or Microsoft Silverlight plugins  You can turn any tab into an "App Tab"  The default homepage design has been refreshed  Overhaul of the bookmarks and history code, enabling faster bookmarking and startup performance  Per-compartment garbage collection is now enabled, reducing work done during complex animations  Additional polish for the Firefox add-on Manager  Improved web typography using OpenType with support for ligatures, kerning and font variants  Web developers can animate content using CSS Transitions  Responsiveness and scrolling improvements from the new retained layers layout system  HTML5 Forms API makes web based forms easier to implement and validate  Support for the new proposed Audio Data API  Support for HSTS security protocol allowing sites to insist that they only be loaded over SSL  A new feature called Panorama gives users a visual overview of all open tabs, allowing them to be sorted and grouped  An experimental API is included to provide more efficient JavaScript animations  Firefox now supports the HTML5 video "buffered" property  Changes to how XPCOM components are registered in order to help startup time and process separation  New Addons Manager and extension management API  Significant API improvements are available for JS-ctypes, a foreign function interface for extensions  CSS Transitions are partially supported  Core Animation rendering model for plugins on Mac OS X  Web developers can update the URL field without reloading the page using HTML History APIs  More responsive page rendering using lazy frame construction  Link history lookup is done asynchronously to provide better responsiveness during pageload  CSS :visited selectors have been changed to block websites from being able to check a user's browsing history  New HTML5 parser  Support for more HTML5 form controls  Web authors can now get touch events from Firefox users on Windows 7 machines  A new way of representing values in JavaScript that allows Firefox to execute heavy, numeric code more efficiently |
| 4.0.1 | 28 เมษายน 2554 | 2.0 |  Fixed several security issues  Fixed several stability issues |
| 5.0 | 21 มิถุนายน 2554 | 5.0 |  Better standards support for HTML5, CSS3, MathML, XHR and SMIL  Better visibility for the Do not track header preference  Stability and security improvements  Better tuned HTTP idle connection logic  Improved canvas, JavaScript, memory, and networking performance  Improved spell checking for some locales  Improved desktop environment integration for Linux users  Better WebGL security (WebGL content can no longer load cross-domain textures).  Background tabs have setTimeout and setInterval clamped to 1000 ms to improve performance  Gecko version number bumped to 5.0 to match (and from then on stay synced to) Firefox's major version number |
| 5.0.1 | 11 กรกฎาคม 2554 | 5.0 |  Fixed an issue in Mac OS X 10.7 that could cause Firefox to crash  Fixed an issue caused by Apple's "Java for Mac OS X 10.6 Update 5" where the Java plugin would not be loaded |
| 6.0 | 16 สิงหาคม 2554 | 6.0 |  about:permissions, a permissions manager. The user can choose what information can be shared with sites, e.g. location.  The address bar now highlights the domain of the website you are visiting.  Streamlined the look of the site identity block  Added support for the latest draft version of WebSockets with a prefixed API  Added support for EventSource / server-sent events  Added support for window.matchMedia  Added Scratchpad, an interactive JavaScript prototyping environment  Added a new Web Developer menu item and moved development-related items into it  Improved usability of the Web Console  Improved the discoverability of Firefox Sync  Reduced browser startup time when using Panorama  Fixed several stability issues  Fixed several security issues |
| 6.0.2 | 6 กันยายน 2554 | 6.0 |  Revoked the root certificate for DigiNotar due to fraudulent SSL certificate issuance  Removed trust exceptions for certificates issued by Staat der Nederlanden  Resolved an issue with gov.uk websites |
| 7.0 | 27 กันยายน 2554 | 7.0 |  Drastically improved memory handling for certain use cases  Added a new rendering backend to speed up Canvas operations on Windows systems  Bookmark and password changes now sync almost instantly when using Firefox Sync  The 'http://' URL prefix is now hidden by default.  Added support for text-overflow: ellipsis  Added support for the Web Timing specification  Enhanced support for MathML  The WebSocket protocol has been updated from version 7 to version 8.  Added an opt-in system for users to send performance data back to Mozilla to improve future versions of Firefox  Fixed several stability issues  Fixed several security issues |
| 7.0.1 | 29 กันยายน 2554 | 7.0 |  Fixed a rare issue where some users could find one or more of their add-ons hidden after a Firefox update |
| 8.0 | 8 พฤศจิกายน 2554 | 8.0 |  Add-ons installed by third-party programs are now disabled by default  Added a one-time add-on selection dialog to manage previously installed add-ons  Added Twitter to the search bar  Added a preference to load tabs on demand, improving startup time when windows are restored  Improved performance and memory handling when using <audio> and <video> elements  Added Cross-Origin Resource Sharing (CORS) support for cross-domain textures in WebGL  Added support for HTML5 context menus  Added support for insertAdjacentHTML()  Improved CSS hyphen support for many languages  Improved WebSocket support  Fixed several stability issues |
| 8.0.1 | 21 พฤศจิกายน 2554 | 8.0 |  Fixed Mac OS X crash that occurred in certain instances when a Java Applet is loaded with Java SE 6 version 1.6.0_29 installed.  Fixed Windows startup crash caused by RoboForm versions older than 7.6.2. |
| 9.0 | 20 ธันวาคม 2554 | 9.0 |  Added type inference, significantly improving JavaScript performance.  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 the font-stretch CSS property.  Improved support for the text-overflow CSS property.  Improved standards support for HTML5, MathML, and CSS.  Fixed several stability issues. |
| 9.0.1 | 21 ธันวาคม 2554 | 9.0 |  Fixed crash on Windows, Mac and Linux |
| 10.0 | 31 มกราคม 2555 | 10.0 |  Most add-ons are now compatible with new versions of Firefox by default.  Anti-Aliasing for WebGL is now implemented.  CSS3 3D-Transforms are now supported.  New  element for bi-directional text isolation, along with supporting CSS properties.  Full Screen APIs allow you to build a web application that runs full screen. |
| 10.0.1 | 10 กุมภาพันธ์ 2555 | 10.0 |  Security fix |
| 10.0.2 | 16 กุมภาพันธ์ 2555 | 10.0 |  Fixed Java applets that sometimes caused text input to become unresponsive. |
| 10.0.3esr | 13 มีนาคม 2555 | 10.0 |  Security fixes  Fixed web workers running out of memory, affecting some add-ons used by organizations. |
| 10.0.4esr | 24 เมษายน 2555 | 10.0 |  Fixed an issue in Firefox ESR 10.0.3 that caused the "Whats New" page to open after an update.  Fixed extensions.checkCompatibility.* prefs not working in ESR releases. |
| 10.0.5esr | 5 มิถุนายน 2555 | 10.0 |  Fixed the 10.0.5 Firefox top crash with signature [@ GLEngine@0x620cf ]. |
| 10.0.6esr | 17 กรกฎาคม 2555 | 10.0 |  Security fixes  Stability fixes  Fixed some text editing inconsistencies. |
| 10.0.7esr | 28 สิงหาคม 2555 | 10.0 |  Fixed contenteditable breaks in 10.0.7 that middle-click to open links  Addressed a fix that allows specifying wildcard that matches all simple netbiosnames in network.automatic-ntlm-auth.trusted-uris. |
| 10.0.8esr | 9 ตุลาคม 2555 | 10.0 |  Security fixes |
| 10.0.9esr | 12 ตุลาคม 2555 | 10.0 |  Security fix |
| 10.0.10esr | 26 ตุลาคม 2555 | 10.0 |  Security fix |
| 10.0.11esr | 20 พฤศจิกายน 2555 | 10.0 |  Security fix |
| 10.0.12esr | 8 มกราคม 2556 | 10.0 |  Security fix |
| 11.0 | 13 มีนาคม 2555 | 11.0 |  Migration of settings from Google Chrome  SPDY protocol support (disabled by default)  RFC 6455 WebSocket protocol support with an unprefixed API  Page Inspector Tilt (3D View)  Sync Add-ons  Redesigned HTML5 video controls  Style Editor (CSS) |
| 12.0 | 24 เมษายน 2555 | 12.0 |  Windows: Firefox is now easier to update with one less prompt (User Account Control)  Last release for Windows 2000  Reintroduced on-demand loading of pinned tabs after restoring a session  Page Source now has line numbers  Line breaks are now supported in the title attribute  Improvements to "Find in Page" to center search result  URLs pasted into the download manager window are now automatically downloaded  Support for the text-align-last CSS property has been added  Experimental support for ECMAScript 6 Map and Set objects has been implemented  Various security fixes  Many bug fixes Some TinyMCE-based editors failed to load (739141)  OS X: WebGL performance may be degraded on some hardware (713305) |
| 13.0 | 5 มิถุนายน 2555 | 13.0 |  When opening a new tab, users are now presented with their most visited pages  The default home page now has quicker access to bookmarks, history, settings, and more  SPDY protocol now enabled by default for faster browsing on supported sites  Restored background tabs are not loaded by default for faster startup  Smooth scrolling is now enabled by default  72 total improvements to Page Inspector, HTML panel, Style Inspector, Scratchpad and Style Editor  The column-fill CSS property has been implemented  Experimental support for ECMAScript 6 Map and Set objects has been implemented  Support for the CSS3 background-position property extended syntax has been added  The :invalid pseudo-class can now be applied to the element  The CSS turn angle unit is now supported |
| 13.0.1 | 15 มิถุนายน 2555 | 13.0 |  Fixed an issue when Windows Messenger did not load in Hotmail, and the Hotmail inbox did not auto-update  Fixed the Hebrew text that was sometimes rendered incorrectly  Fixed an issue in Adobe Flash 11.3 that sometimes caused a crash on quit  Various security fixes |
| 14.0 | 26 มิถุนายน 2555 | 14.0 |  Google searches now utilize HTTPS  Full screen support for Mac OS X Lion implemented  Plugins can now be configured to only load on click (about:config)  The Awesome Bar now auto-completes typed URLs  Improved site identity manager, to prevent spoofing of an SSL connection with favicons  Pointer Lock API implemented  New API to prevent your display from sleeping  New text-transform and font-variant CSS improvements for Turkic languages and Greek  Long URLs now extend the status bar almost to the whole width of the viewport.  Gstreamer backend for HTML5 video to allow H.264 playback (needs to be enabled at compile time). |
| 14.0.1 | 17 กรกฎาคม 2555 | 14.0 |  Various security fixes  Fixed the GIF animation that can get stuck when src and image size are changed  Mac OS X: Fixed the nsCocoaWindow::ConstrainPosition that uses wrong screen in multi-display setup  Fixed the CSS :hover regression when an element's class name is set by JavaScript |
| 15.0 | 28 สิงหาคม 2555 | 15.0 |  Silent update: Background updates  Support for SPDY networking protocol v3  WebGL enhancements, including compressed textures for better performance  Localization in Maithili  Optimized memory usage for add-ons  JavaScript debugger integrated into developer tools  New layout view added to Inspector  High precision event timer implemented  The CSS word-break property has been implemented  New responsive design tool allows web developers to switch between desktop and mobile views of sites  Native support for the Opus audio format added  The <audio> and <video> elements now support the played attribute  The source element now supports the media attribute  Fixed the focus rings that keep growing when repeatedly tabbing through elements |
| 15.0.1 | 6 กันยายน 2555 | 15.0 |  Addressed a fix where sites visited while in Private Browsing mode could be found through manual browser cache inspection |
| 16.0 | 9 ตุลาคม 2555 | 16.0 |  Firefox on Mac OS X now has preliminary VoiceOver support turned on by default  Last release for Mac OS X Leopard (Intel)  Initial web app support (Windows/Mac/Linux)  Acholi and Kazakh localizations added  Improvements around JavaScript responsiveness through incremental garbage collection  New Developer Toolbar with buttons for quick access to tools, error count for the Web Console, and a new command line for quick keyboard access  CSS3 Animations, Transitions, Transforms and Gradients unprefixed  Recently opened files list in Scratchpad implemented  Fixed an issue where debugger breakpoints do not catch on page reload  No longer supporting MD5 as a hash algorithm in digital signatures  Opus support by default  Reverse animation direction has been implemented  Per tab reporting in about:memory  User Agent strings for pre-release Firefox versions now show only major version |
| 16.0.1 | 11 ตุลาคม 2555 | 16.0 |  Fixed security vulnerabilities |
| 16.0.2 | 26 ตุลาคม 2555 | 16.0 |  Fixed security vulnerability |
| 17.0 | 20 พฤศจิกายน 2555 | 17.0 |  First revision of the Social API and support for Facebook Messenger  Click-to-play blocklisting implemented to prevent vulnerable plugin versions from running without the user's permission  Updated Awesome Bar experience with larger icons  Mac OS X 10.5 is no longer supported  JavaScript Maps and Sets are now iterable  SVG FillPaint and StrokePaint implemented  Improvements that make the Web Console, Debugger and Developer Toolbar faster and easier to use  New Markup panel in the Page Inspector allows easy editing of the DOM  Sandbox attribute for iframes implemented, enabling increased security  Over twenty performance improvements, including fixes around the New Tab page  Fixed pointer lock that doesn't work in web apps  Fixed page scrolling on sites with fixed headers |
| 17.0.1 | 30 พฤศจิกายน 2555 | 17.0 |  Reverted user agent change causing some website incompatibilities  Fixed font rendering issue |
| 17.0.2esr | 8 มกราคม 2556 | 17.0 |  Security and stability fixes  Fixed improvements to the Click-to-Play vulnerable plugin blocklisting feature |
| 17.0.3esr | 19 กุมภาพันธ์ 2556 | 17.0 |  Security fix |
| 17.0.4esr | 7 มีนาคม 2556 | 17.0 |  Security fix |
| 17.0.5esr | 2 เมษายน 2556 | 17.0 |  Security fix |
| 17.0.6esr | 14 พฤษภาคม 2556 | 17.0 |  Security fix |
| 17.0.7esr | 25 มิถุนายน 2556 | 17.0 |  Security fix |
| 17.0.8esr | 6 สิงหาคม 2556 | 17.0 |  Security fix |
| 17.0.9esr | 17 กันยายน 2556 | 17.0 |  Security fix |
| 17.0.10esr | 29 ตุลาคม 2556 | 17.0 |  Security fix |
| 17.0.11esr | 15 พฤศจิกายน 2556 | 17.0 |  Updated ESR17 to NSS 3.14.5 RTM. |
| 18.0 | 8 มกราคม 2556 | 18.0 |  Faster JavaScript performance via IonMonkey compiler  Support for Retina displays on OS X 10.7 and up  Preliminary support for WebRTC  Better image quality with Mozilla's new HTML scaling algorithm  Performance improvements around tab switching  Support for new DOM property window.devicePixelRatio  Improvement in startup time through smart handling of signed extension certificates  Support for W3C touch events implemented, taking the place of MozTouch events  Disable insecure content loading on HTTPS pages  Improved responsiveness for users on proxies |
| 18.0.1 | 18 มกราคม 2556 | 18.0 |  Fixed problems involving HTTP Proxy Transactions  Fixed unity player crashes on Mac OS X  Disabled HIDPI support on external monitors to avoid rendering glitches |
| 18.0.2 | 5 กุมภาพันธ์ 2556 | 18.0 |  Fixed JavaScript related stability issues |
| 19.0 | 19 กุมภาพันธ์ 2556 | 19.0 |  Built-in PDF Viewer  Canvas elements can export their content as an image blob using canvas.toBlob()  Startup performance improvements  Debugger now supports pausing on exceptions and hiding non-enumerable properties  Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true)  There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true)  Web Console CSS links now open in the Style Editor  CSS @page is now supported  CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)  CSS text-transform now supports full-width  Fixed certain valid WebGL drawing operations that were incorrectly rejected, leaving incomplete rendering in affected pages  Fixed an issue that starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode  Fixed plugins that stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode |
| 19.0.1 | 27 กุมภาพันธ์ 2556 | 19.0 |  Windows 8 only: Fixed stability issue for some AMD Radeon HD graphics cards |
| 19.0.2 | 7 มีนาคม 2556 | 19.0 |  Security-driven release |
| 20.0 | 2 เมษายน 2556 | 20.0 |  Security fixes  Per-window Private Browsing  New download experience  Ability to close hanging plugins, without the browser hanging  Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.)  Continued implementation of draft ECMAScript 6 - clear() and Math.imul  New JavaScript Profiler tool  getUserMedia implemented for web access to the user's camera and microphone (with user permission)  <canvas> now supports blend modes  Various <audio> and <video> improvements  Fixed: Details button on Crash Reporter  Fixed: Unity plugin that doesn't display in HiDPI mode |
| 20.0.1 | 11 เมษายน 2556 | 20.0 |  Windows-only update to handle issues around handling UNC paths |
| 21.0 | 14 พฤษภาคม 2556 | 21.0 |  The Social API now supports multiple providers  Enhanced three-state UI for Do Not Track (DNT)  Preliminary implementation of Firefox Health Report  Firefox will suggest how to improve your application startup time if needed  Ability to Restore removed thumbnails on New tab Page  CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none  Graphics related performance improvements  Removed E4X support from SpiderMonkey  Implemented Remote Profiling  Integrated, Add-on SDK loader and API libraries into Firefox  Added support for <main> element  Implemented scoped stylesheets  Fixed: Some function keys may not work when pressed  Fixed: Browsing and Download history clearing needs unification to avoid confusion on clearing download history  Security fixes |
| 22.0 | 25 มิถุนายน 2556 | 22.0 |  WebRTC is now enabled by default  Windows: Firefox now follows display scaling options to render text larger on high-res displays  Mac OS X: Download progress in Dock application icon  HTML5 audio/video playback rate can now be changed  Social services management implemented in Add-ons Manager  asm.js optimizations (OdinMonkey) enabled for major performance improvements  Improved WebGL rendering performance through asynchronous canvas updates  Plain text files displayed within Firefox will now word-wrap  For user security, the |Components| object is no longer accessible from web content  Improved memory usage and display time when rendering images  Pointer Lock API can now be used outside of fullscreen  CSS3 Flexbox implemented and enabled by default  New Web Notifications API implemented  Added clipboardData API for JavaScript access to a user's clipboard  New built-in font inspector  New HTML5 <data> and <time> elements  Fixed: Scrolling using some high-resolution-scroll aware touchpads feels slow |
| 23.0 | 6 สิงหาคม 2556 | 23.0 |  Mixed content blocking enabled to protects users from man-in-the-middle attacks and eavesdroppers on HTTPS pages  Options panel created for Web Developer Toolbox  "Enable JavaScript" preference checkbox has been removed and user-set values will be reset to the default  Updated Firefox Logo  Improved about:memory's functional UI  Simplified interface for notifications of plugin installation  Enabled DXVA2 on Windows Vista+ to accelerate H.264 video decoding  Users can now switch to a new search provider across the entire browser  CSP policies using the standard syntax and semantics will now be enforced  <input type='file'> rendering improvements  Replaced fixed-ratio audio resampler in webrtc.org capture code with Speex resampler and eliminated pseudo-44,000 Hz rate  "Load images automatically" and "Always show the tab bar" checkboxes removed from preferences and reset to defaults  HTML5 <input type="range"> form control implemented  Write more accessible pages on touch interfaces with new ARIA role for key buttons  Social share functionality  Added unprefixed requestAnimationFrame  Implemented a global browser console  Dropped blink effect from text-decoration: blink; and completely removed <blink> element  New feature in toolbox: Network Monitor  Various security fixes |
| 23.0.1 | 16 สิงหาคม 2556 | 23.0 |  Fixed rendering glitches on H.264 video only in FF23 on Vista  Fixed spellchecking that was broken with non-ASCII characters in profile path  Fixed audio static/"burble"/breakup in Firefox to Firefox WebRTC calls |
| 24.0 | 17 กันยายน 2556 | 24.0 |  Support for new scrollbar style in Mac OS X 10.7 and newer  Implemented Close tabs to the right  Social: Ability to tear-off chat windows to view separately by simply dragging them out  Accessibility related improvements on using pinned tabs  Removed support for Revocation Lists feature  Performance improvements on New Tab Page loads  Major SVG rendering improvements around Image tiling and scaling  Improved and unified Browser console for enhanced debugging experience, replacing existing Error console  Removed support for sherlock files that are loaded from application or profile directory  Replaced fixed-ratio audio resampler in webrtc.org capture code with Speex resampler and eliminated pseudo-44,000  rate  Security fixes |
| 24.1.0esr | 29 ตุลาคม 2556 | 24.0 |  Security fix |
| 24.1.1esr | 15 พฤศจิกายน 2556 | 24.0 |  Updated branches that use 4.10 RTM to 4.10.2 RTM  Updated Mozilla to NSS 3.15.3 (new alternative NSS branch) to pick up a few fixes  Fixed an issue where some UI strings in Firefox 24.1.0 ESR l10n builds are in English |
| 24.2.0esr | 10 ธันวาคม 2556 | 24.0 |  Security fix |
| 24.3.0esr | 4 กุมภาพันธ์ 2557 | 24.0 |  Security fix |
| 24.4.0esr | 18 มีนาคม 2557 | 24.0 |  Security fix |
| 24.5.0esr | 29 เมษายน 2557 | 24.0 |  Security fix |
| 24.6.0esr | 10 มิถุนายน 2557 | 24.0 |  Security fix |
| 24.7.0esr | 22 กรกฎาคม 2557 | 24.0 |  Security fix |
| 24.8.0esr | 2 กันยายน 2557 | 24.0 |  Security fix |
| 24.8.1esr | 24 กันยายน 2557 | 24.0 |  Various security fixes |
| 25.0 | 29 ตุลาคม 2556 | 25.0 |  Web Audio support  The find bar is no longer shared between tabs  If away from Firefox for months, you now will be offered the option to migrate another browser's history and settings  Resetting Firefox no longer clears your browsing session  CSS3 background-attachment:local support to control background scrolling  Many new ES6 functions implemented  iframe document content can now be specified inline  Fixed blank or missing page thumbnails when opening a new tab |
| 25.0.1 | 15 พฤศจิกายน 2556 | 25.0 |  Security fixes  Fixed pages that sometimes wouldn't load without first moving the cursor |