FIXED: Systems with first generation NVidia Optimus graphics cards may crash on start-up
FIXED: Users who import cookies from Google Chrome can end up with broken websites
FIXED: Large animated images may fail to play and may stop other images from loading
FIXED: WebRTC H264 video streams from CiscoSpark native clients are not decoded correctly. (Fixed in Firefox ESR 38.0.1; was already fixed in Firefox 38.0)
Known Issues
UNRESOLVED: Responsive images do not update when the enclosing viewport changes
Förändringar v37.0.2 -> v38.0
What’s New
NEW: New tab-based preferences
NEW: Ruby annotation support
NEW: Base for the next ESR release.
CHANGED: autocomplete=off is no longer supported for username/password fields
CHANGED: URL parser avoids doing percent encoding when setting the Fragment part of the URL, and percent decoding when getting the Fragment in line with the URL spec
CHANGED: RegExp.prototype.source now returns "(?:)" instead of the empty string for empty regular expressions
CHANGED: Improved page load times via speculative connection warmup
HTML5: WebSocket now available in Web Workers
HTML5: BroadcastChannel API implemented
HTML5: Implemented srcset attribute and element for responsive images
HTML5: Implemented DOM3 Events KeyboardEvent.code
HTML5: Mac OS X: Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube
HTML5: Implemented Encrypted Media Extensions (EME) API to support encrypted HTML5 video/audio playback (Windows Vista or later only)
HTML5: Automatically download Adobe Primetime Content Decryption Module (CDM) for DRM playback through EME (Windows Vista or later only)
DEVELOPER: Optimized-out variables are now visible in Debugger UI
DEVELOPER: XMLHttpRequest logs in the web console are now visually labelled and can be filtered separately from regular network requests
DEVELOPER: WebRTC now has multistream and renegotiation support
DEVELOPER: copy command added to console
FIXED: Various security fixes
Known Issues
UNRESOLVED: Responsive images do not update when the enclosing viewport changes
Förändringar v37.0.1 -> v37.0.2
What’s New
Fixed: Google Maps may render incorrectly in some cases
Fixed: Stability fixes for select graphics hardware and feature sets
Fixed: Various security fixes
Förändringar v37.0 -> v37.0.1
What’s New
Changed: Disabled HTTP/2 AltSvc
Fixed: Start-up crash due to graphics hardware and third party software
Fixed: Various security fixes
Förändringar v36.0.3 -> v36.0.4
What’s New
Fixed: 36.0.4: Security fixes for issues disclosed at HP Zero Day Initiative's Pwn2Own contest
New: Pinned tiles on the new tab page can be synced
New: Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.
New: Locale added: Uzbek (uz)
Changed: -remote option removed
Changed: No longer accept insecure RC4 ciphers whenever possible
Changed: Phasing out Certificates with 1024-bit RSA Keys
Changed: Shut down hangs will now show the crash reporter before exiting the program
Changed: Add-on Compatibility
HTML5: Support for the ECMAScript 6 Symbol data type added
HTML5: unicode-range CSS descriptor implemented
HTML5: CSSOM-View scroll behavior implemented allowing smooth scrolling of content without custom libraries
HTML5: object-fit and object-position implemented. Defines how and where the content of a replaced element is displayed
HTML5: isolation CSS property implemented. Create a new stacking context to isolate groups of boxes to control which blend together
HTML5: CSS3 will-change property implemented. Hints the browser of elements that will be modified. The browser will perform some performance optimization for these
HTML5: Improved ES6 generators for better performance
HTML5: Changed JavaScript 'const' semantics to conform better to the ES6 specification. The const declaration is now block-scoped and requires an initializer. It also can not be redeclared anymore.
Developer: Eval sources now appear in the Debugger. Debug JavaScript code that is evaluated dynamically, either as a string passed to eval() or as a string passed to the Function constructor
Developer: DOM Promises inspection
Developer: Inspector: More paste options in markup view
Fixed: 36.0.3: Security fixes for issues disclosed at HP Zero Day Initiative's Pwn2Own contest
Fixed: 36.0.1 - Hello may become inactive until restart (1137469)
Fixed: 36.0.1 - Print preferences may not be preserved (1136855)
Fixed: 36.0.1 - Hello contact tabs may not be visible (1137141)
Fixed: 36.0.1 - Disable the usage of the ANY DNS query type (1093983)
Fixed: 36.0.1 - Fixed a startup crash with EMET (1137050)
Fixed: 36.0.1 - WebGL may use significant memory with Canvas2d (1137251)
Fixed: 36.0.1 - Accept hostnames that include an underscore character ("_") (1136616)
Fixed: 36.0.1 - Option -remote has been restored (1080319)
Fixed: 36.0.1 - Fix a top crash
Fixed: Various security fixes
Fixed: CSS gradients work on premultiplied colors
Fixed: Fix some unexpected logout from Facebook or Google after restart
Known Issues
unresolved: Style Editor: Extra white space appearing above the editor for a sourcemapped scss file (1128747)
unresolved: For users who removed the Share & Hello buttons, this new version brings them back unexpectedly (1136300)
unresolved: Firefox Hello does not work for link generators if there is no camera installed (1106941)
Förändringar v36.0.1 -> v36.0.3
What’s New
Fixed: 36.0.3: Security fixes for issues disclosed at HP Zero Day Initiative's Pwn2Own contest
New: Pinned tiles on the new tab page can be synced
New: Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.
New: Locale added: Uzbek (uz)
Changed: -remote option removed
Changed: No longer accept insecure RC4 ciphers whenever possible
Changed: Phasing out Certificates with 1024-bit RSA Keys
Changed: Shut down hangs will now show the crash reporter before exiting the program
Changed: Add-on Compatibility
HTML5: Support for the ECMAScript 6 Symbol data type added
HTML5: unicode-range CSS descriptor implemented
HTML5: CSSOM-View scroll behavior implemented allowing smooth scrolling of content without custom libraries
HTML5: object-fit and object-position implemented. Defines how and where the content of a replaced element is displayed
HTML5: isolation CSS property implemented. Create a new stacking context to isolate groups of boxes to control which blend together
HTML5: CSS3 will-change property implemented. Hints the browser of elements that will be modified. The browser will perform some performance optimization for these
HTML5: Improved ES6 generators for better performance
HTML5: Changed JavaScript 'const' semantics to conform better to the ES6 specification. The const declaration is now block-scoped and requires an initializer. It also can not be redeclared anymore.
Developer: Eval sources now appear in the Debugger. Debug JavaScript code that is evaluated dynamically, either as a string passed to eval() or as a string passed to the Function constructor
Developer: DOM Promises inspection
Developer: Inspector: More paste options in markup view
Fixed: 36.0.1 - Hello may become inactive until restart (1137469)
Fixed: 36.0.1 - Print preferences may not be preserved (1136855)
Fixed: 36.0.1 - Hello contact tabs may not be visible (1137141)
Fixed: 36.0.1 - Disable the usage of the ANY DNS query type (1093983)
Fixed: 36.0.1 - Fixed a startup crash with EMET (1137050)
Fixed: 36.0.1 - WebGL may use significant memory with Canvas2d (1137251)
Fixed: 36.0.1 - Accept hostnames that include an underscore character ("_") (1136616)
Fixed: 36.0.1 - Option -remote has been restored (1080319)
Fixed: 36.0.1 - Fix a top crash
Fixed: Various security fixes
Fixed: CSS gradients work on premultiplied colors
Fixed: Fix some unexpected logout from Facebook or Google after restart
Known Issues
unresolved: Style Editor: Extra white space appearing above the editor for a sourcemapped scss file (1128747)
unresolved: For users who removed the Share & Hello buttons, this new version brings them back unexpectedly (1136300)
unresolved: Firefox Hello does not work for link generators if there is no camera installed (1106941)
Förändringar v36.0 -> v36.0.1
What’s New
Fixed: 36.0.1 - Disable the usage of the ANY DNS query type (1093983)
Fixed: 36.0.1 - Fixed a startup crash with EMET (1137050)
Fixed: 36.0.1 - Hello may become inactive until restart (1137469)
Fixed: 36.0.1 - Print preferences may not be preserved (1136855)
Fixed: 36.0.1 - Hello contact tabs may not be visible (1137141)
Fixed: 36.0.1 - Accept hostnames that include an underscore character ("_") (1136616)
Fixed: 36.0.1 - WebGL may use significant memory with Canvas2d (1137251)
Fixed: 36.0.1 - Option -remote has been restored (1080319)
Fixed: 36.0.1 - Fix a top crash
New: Pinned tiles on the new tab page can be synced
New: Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.
New: Locale added: Uzbek (uz)
Changed: -remote option removed
Changed: No longer accept insecure RC4 ciphers whenever possible
Changed: Phasing out Certificates with 1024-bit RSA Keys
Changed: Shut down hangs will now show the crash reporter before exiting the program
Changed: Add-on Compatibility
HTML5: Support for the ECMAScript 6 Symbol data type added
HTML5: unicode-range CSS descriptor implemented
HTML5: CSSOM-View scroll behavior implemented allowing smooth scrolling of content without custom libraries
HTML5: object-fit and object-position implemented. Defines how and where the content of a replaced element is displayed
HTML5: isolation CSS property implemented. Create a new stacking context to isolate groups of boxes to control which blend together
HTML5: CSS3 will-change property implemented. Hints the browser of elements that will be modified. The browser will perform some performance optimization for these
HTML5: Improved ES6 generators for better performance
HTML5: Changed JavaScript 'const' semantics to conform better to the ES6 specification. The const declaration is now block-scoped and requires an initializer. It also can not be redeclared anymore.
Developer: Eval sources now appear in the Debugger. Debug JavaScript code that is evaluated dynamically, either as a string passed to eval() or as a string passed to the Function constructor
Developer: DOM Promises inspection
Developer: Inspector: More paste options in markup view
Fixed: Various security fixes
Fixed: CSS gradients work on premultiplied colors
Fixed: Fix some unexpected logout from Facebook or Google after restart
Known Issues
unresolved: Style Editor: Extra white space appearing above the editor for a sourcemapped scss file (1128747)
unresolved: For users who removed the Share & Hello buttons, this new version brings them back unexpectedly (1136300)
unresolved: Firefox Hello does not work for link generators if there is no camera installed (1106941)
Förändringar v35.0.1 -> v36.0
What’s New
New: Pinned tiles on the new tab page can be synced
New: Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.
New: Locale added: Uzbek (uz)
New: New preferences implementation enabled for the first half of the beta cycle
Changed: The Flash protected-mode sandbox is disabled on Windows, to evaluate the stability impact of protected mode
Changed: -remote option removed
Changed: No longer accept insecure RC4 ciphers whenever possible
Changed: Phasing out Certificates with 1024-bit RSA Keys
Changed: Shut down hangs will now show the crash reporter before exiting the program
Changed: Add-on Compatibility
HTML5: Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube.
HTML5: Support for the ECMAScript 6 Symbol data type added
HTML5: unicode-range CSS descriptor implemented
HTML5: CSSOM-View scroll behavior implemented allowing smooth scrolling of content without custom libraries
HTML5: object-fit and object-position implemented. Defines how and where the content of a replaced element is displayed
HTML5: isolation CSS property implemented. Create a new stacking context to isolate groups of boxes to control which blend together
HTML5: CSS3 will-change property implemented. Hints the browser of elements that will be modified. The browser will perform some performance optimization for these
HTML5: Changed JavaScript 'const' semantics to conform better to the ES6 specification. The const declaration is now block-scoped and requires an initializer. It also can not be redeclared anymore.
HTML5: implemented for more privacy. Allows to control the content of the HTTP referer header.
HTML5: Improved ES6 generators for better performance
Developer: Eval sources now appear in the Debugger. Debug JavaScript code that is evaluated dynamically, either as a string passed to eval() or as a string passed to the Function constructor
Developer: DOM Promises inspection
Developer: Inspector: More paste options in markup view
Fixed: CSS gradients work on premultiplied colors
Fixed: Fix some unexpected logout from Facebook or Google after restart
Förändringar v35.0 -> v35.0.1
What’s New
Fixed: 35.0.1 - With the Enhanced Steam extension, Firefox could crash (1123732)
Fixed: 35.0.1 - Fix a potential startup crash (1122367)
Fixed: 35.0.1 - Kerberos authentication did not work with alias (1108971)
Fixed: 35.0.1 - SVG / CSS animation had a regression causing rendering issues on websites like openstreemap.org (1083079)
Fixed: 35.0.1 - On Godaddy webmail, Firefox could crash (1113121)
Fixed: 35.0.1 - document.baseURI did not get updated to document.location after base tag was removed from DOM for site with a CSP (1121857)
Fixed: 35.0.1 - With a Right-to-left (RTL) version of Firefox, the text selection could be broken (1104036)
Fixed: 35.0.1 - CSP had a change in behavior with regard to case sensitivity resources loading (1122445)
New: Firefox Hello with new rooms-based conversations model
New: New search UI improved and enabled for more locales
New: Access the Firefox Marketplace from the Tools menu and optional toolbar button
New: Built-in support for H264 (MP4) on Mac OS X Snow Leopard (10.6) and newer through native APIs
New: Improved handling of dynamic styling changes to increase responsiveness
New: Use tiled rendering on OS X
New: Improved high quality image resizing performance
HTML5: Changed JavaScript 'let' semantics to conform better to the ES6 specification
HTML5: Resource Timing API implemented
HTML5: CSS filters enabled by default
HTML5: Added support for the CSS Font Loading API
Developer: Support for inspecting ::before and ::after pseudo elements
Developer: Computed view: Nodes matching the hovered selector are now highlighted
Developer: Network Monitor: New request/response headers view (more info)
Developer: Added support for the EXT_blend_minmax WebGL extension
Fixed: Various security fixes
Fixed: Show DOM Properties context menu item in inspector
Fixed: Reduced resource usage for scaled images
Fixed: PDF.js updated to version 1.0.907
Fixed: Non-HTTP(S) XHR now returns correct status code
Known Issues
unresolved: WebGL games might not display some textures (see bug 1113633)
unresolved: Sometimes images don't display when hovered over (see bug 1083113)
unresolved: Issues affecting RTL in Hello can be found here
Förändringar v33.1.1 -> v34.0.5
What’s New
New: Firefox Hello real-time communication client
New: Easily switch themes/personas directly in the Customizing mode
New: Wikipedia search now uses HTTPS for secure searching (en-US only)
New: Implementation of HTTP/2 (draft14) and ALPN
New: Recover from a locked Firefox process in the "Firefox is already running" dialog on Windows
HTML5: ECMAScript 6 WeakSet Implemented
HTML5: JavaScript Template Strings Implemented
HTML5: CSS3 Font variants and features control (e.g. kerning) implemented
HTML5: WebCrypto: RSA-OAEP, PBKDF2 and AES-KW support
HTML5: WebCrypto: wrapKey and unwrapKey implemented
HTML5: WebCrypto: Import/export of JWK-formatted keys
HTML5: matches() DOM API implemented (formerly mozMatchesSelector())
HTML5: Performance.now() for workers implemented
HTML5: WebCrypto: ECDH support
HTML5: Support for the ECMAScript 6 Symbol data type added
Developer: WebIDE: Create, edit, and test a new Web application from your browser
Developer: Highlight all nodes that match a given selector in the Style Editor and the Inspector's Rules panel
Developer: Improved User Interface of the Profiler
Developer: console.table function added to web console
Fixed: CSS transitions start correctly when started at the same time as changes to display, position, overflow, and similar properties
Known Issues
unresolved: Windows: On some combination of hardware and drivers, the main window could be black. In this case, update your graphics drivers (1083071). Resolved in v33.0.1
Förändringar v33.1 -> v33.1.1
What’s New
Fixed: 33.1.1 - Fixed startup crash (1021265)
New: Forget Button added
New: Enhanced Tiles
New: Privacy tour introduced
New: Adding DuckDuckGo as a search option
Known Issues
unresolved: PDF.js: With some images, wrong colors could show up. Affects a very small number of PDF
unresolved: Windows: Interface may be slow when typing or selecting text (1089183)
unresolved: Windows: On some combination of hardware and drivers, some flickering can happen
Förändringar v33.0.3 -> v33.1
What’s New
New: Forget Button added
New: Enhanced Tiles
New: Privacy tour introduced
New: Adding DuckDuckGo as a search option
Known Issues
unresolved: PDF.js: With some images, wrong colors could show up. Affects a very small number of PDF
unresolved: Windows: Interface may be slow when typing or selecting text (1089183)
unresolved: Windows: On some combination of hardware and drivers, some flickering can happen
Förändringar v33.0.2 -> v33.0.3
What’s New
Fixed: 33.0.3: Blacklisted graphics drivers that were causing black screens with OMTC enabled (see bug 1093863)
New: OpenH264 support (sandboxed)
New: Improved search experience through the location bar
New: Windows: OMTC enabled by default
New: Slimmer and faster JavaScript strings
New: Search suggestions on the Firefox Start (about:home) and new tab (about:newtab) pages
New: Support for connecting to HTTP proxy over HTTPS
New: New CSP (Content Security Policy) backend
New: Improved reliability of the session restoration
New: Azerbaijani [az] locale added
Changed: JSD (JavaScript Debugger Service) removed in favor of the Debugger interface
HTML5: @counter-style rule from CSS3 Counter Styles specification implemented
Developer: Cubic-bezier curves editor
Developer: Paint flashing for browser content repaints
Developer: Display which elements have listeners attached
Developer: New sidebar which displays a list of shortcuts to every @media rule in the current stylesheet
Developer: Editable @keyframes rules in the Rules section of the Inspector
Developer: CSS transform highlighter in the style-inspector
Fixed: 33.0.1: Firefox displays a black screen at start-up with certain graphics drivers
Fixed: Various security fixes
Fixed: 33.0.2: Fix a startup crash with some combination of hardware and drivers
Known Issues
unresolved: Fix incomplete downloads being marked as complete by detecting broken HTTP1.1 transfers (237623). Resolved in v33.0
unresolved: PDF.js: With some images, wrong colors could show up. Affects a very small number of PDF.
unresolved: Some certificate errors cannot be overridden (1042889)
unresolved: Windows: On some combination of hardware and drivers, the main window could be black. In this case, update your graphics drivers (1083071). Resolved in v33.0.1
unresolved: Windows: With Avast HTTPS scanning enabled, Firefox will not close correctly (1087674)
unresolved: Windows: Interface may be slow when typing or selecting text (1089183)
Förändringar v33.0 -> v33.0.1
What’s New
Fixed: 33.0.1: Firefox displays a black screen at start-up with certain graphics drivers
New: OpenH264 support (sandboxed)
New: Improved search experience through the location bar
New: Windows: OMTC enabled by default
New: Slimmer and faster JavaScript strings
New: Search suggestions on the Firefox Start (about:home) and new tab (about:newtab) pages
New: Support for connecting to HTTP proxy over HTTPS
New: New CSP (Content Security Policy) backend
New: Improved reliability of the session restoration
New: Azerbaijani [az] locale added
Changed: JSD (JavaScript Debugger Service) removed in favor of the Debugger interface
Developer: Hidden nodes displayed differently in the markup-view
Developer: New Web Audio Editor
Developer: Code completion and inline documentation added to Scratchpad
Fixed: Various security fixes
Fixed: Mac OS X: cmd-L does not open a new window when no window is available
Fixed: Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1
Known Issues
unresolved: Assistive technologies may cause performance issues on Windows XP
Förändringar v30.0 -> v31.0
What’s New
New: Add the search field to the new tab page
New: mozilla::pkix as default certificate verifier (learn more)
New: OdinMonkey: Use backtracking allocator for asm.js style code
New: Integration of generational garbage collection
New: Partial implementation of the OpenType MATH table (section 6.3.6) see documentation about mathematical fonts and the MathML Torture Test for details
New: audio/video .ogg and .pdf files handled by Firefox if no application specified (Windows only)
Changed: Removal of the CAPS infrastructure for specifying site-specific permissions (via capability.policy.* preferences). Most notably, attempts to use this functionality to grant access to the clipboard will no longer work. The sole exception is the checkloaduri permission, which may still be used as before to allow sites to load file:// URIs.
HTML5: WebVTT implemented and enabled (learn more)
Developer: navigator.sendBeacon enabled by default (learn more)
Developer: Dialogs spawned from the onbeforeunload event no longer block access to the rest of the browser
Fixed: Search for partially selected link text from context menu (985824)
Known Issues
unresolved: Slow shut downs lead to 'Firefox is already running' warning (see 966469 and 985655)
unresolved: Without affecting security, after restoring your session, Extended Validation Certificates might not display (See 995801). Resolved in v31.0a2
unresolved: Mac OS X and Windows: Citrix Receiver no longer works. As a workaround, mark the plugin as Always Enable in the addon manager (1025627)
unresolved: GNU/Linux and Windows XP: Google Maps Street View displays a black screen (1034593). Resolved in v32.0a2
unresolved: Mac OS X: cmd-L no longer opens a new window when no window is available (1008793). Resolved in v32.0a2
Förändringar v29.0.1 -> v30.0
What’s New
New: Support for GStreamer 1.0
New: Mac OS X command-E sets find term to selected text
New: Sidebar button gives easier access to social, bookmark, & history sidebars
Changed: Disallow calling WebIDL constructors as functions on the web
Developer: With the exception of those bundled inside an extension or ones that are whitelisted, plugins will no longer be activated by default (see blog post)
Developer: Fixes to box-shadow and other visual overflow (see bug 480888)
Developer: Mute and volume available per window when using WebAudio
Developer: background-blend-mode enabled by default
Developer: Use of line-height allowed for
Developer: ES6 array and generator comprehensions implemented (read docs for more details)
Developer: Error stack now contains column number
Developer: Support for alpha option in canvas context options (feature description)
Fixed: Ignore autocomplete="off" when offering to save passwords via the password manager (see 956906)
Fixed: TypedArrays don't support new named properties (see 695438)
Known Issues
unresolved: Mac OS X: cmd-L no longer opens a new window when no window is available (1008793). Resolved in v32.0a2
unresolved: Without affecting security, after restoring your session, Extended Validation Certificates might not display (See 995801). Resolved in v31.0a2
unresolved: Slow shut downs lead to 'Firefox is already running' warning (see 966469 and 985655)
unresolved: Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1 has a workaround (see 812695)
unresolved: Exit is not always completed when "clear history when Firefox closes" is enabled (1005487)
Förändringar v28.0 -> v29.0
What’s New
New: A set of new improvements to the Firefox user interface (learn more).
New: An interactive onboarding tour to guide users through new interface changes
New: A redesigned and improved customization mode
New: The ability to set up Firefox Sync by creating a Firefox account (learn more)
New: Gamepad API finalized and enabled (learn more)
New: Malay [ma] locale added
Changed: navigator.plugins is no longer enumerable, for user privacy
Changed: Clicking on a W3C Web Notification will switch to the originating tab
Developer: 'box-sizing' (dropping the -moz- prefix) implemented (learn more)
Developer: Console object available in Web Workers (learn more)
Developer: Promises enabled by default (learn more)
Developer: SharedWorker enabled by default
Developer: implemented and enabled
Developer: implemented and enabled
Developer: Enabled ECMAScript Internationalization API
Developer: Add-on bar has been removed, content moved to navigation bar
Known Issues
unresolved: Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1 has a workaround (see 812695)
unresolved: Echo cancellation on apprtc.appspot.com fails (974537)
Förändringar v27.0.1 -> v28.0
What’s New
NEW: Firefox for Windows 8 touch preview available (see blog post)
NEW: Gamepad API finalized and enabled (learn more)
NEW: Mac OS X: Notification Center support for web notifications
NEW: Volume control for HTML5 audio/video
NEW: Support for Opus in WebM
NEW: VP9 video decoding implemented
CHANGED: Removed support for spdy/2
DEVELOPER: Support for MathML 2.0 'mathvariant' attribute
DEVELOPER: Background thread hang reporting
DEVELOPER: implemented and enabled
DEVELOPER: Support for multi-line flexbox in layout
Known Issues
Unresolved: Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1 has a workaround (see 812695)
Förändringar v27.0 -> v27.0.1
What’s New
FIXED: 27.0.1 - Fixed stability issues with Greasemonkey and other JS that used ClearTimeoutOrInterval
FIXED: 27.0.1 - JS math correctness issue (bug 941381
NEW: You can now run more than one service at a time with Firefox SocialAPI, allowing you to receive notifications, chat and more from multiple integrated services
CHANGED: Enabled TLS 1.1 (RFC 4346) and TLS 1.2 (RFC 5246) by default
CHANGED: Added support for SPDY 3.1 protocol
DEVELOPER: Ability to reset style sheets using 'all:unset'
DEVELOPER: You can now choose to deobfuscate javascript in the debugger (see 762761)
DEVELOPER: Added support for scrolled fieldsets (see 261037)
DEVELOPER: Implemented allow-popups directive for iframe sandbox, enabling increased security (see 766282)
DEVELOPER: CSS cursor keywords -moz-grab and -moz-grabbing have been unprefixed (see 880672)
DEVELOPER: Added support for ES6 generators in SpiderMonkey (see blog post)
DEVELOPER: Implemented support for mathematical function Math.hypot() in ES6 (see 896264)
HTML5: Dashed line support on Canvas (see 768067)
FIXED: Get Azure/Skia content rendering working on Linux (see 740200)
FIXED: Various security fixes
Known Issues
Unresolved: Moving Firefox to background while playing a flash video in full screen mode and bring it back to view will freeze the app (see 809055)
Unresolved: Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1 has a workaround (see 812695)
Förändringar v26.0 -> v27.0
What’s New
NEW: You can now run more than one service at a time with Firefox SocialAPI, allowing you to receive notifications, chat and more from multiple integrated services
CHANGED: Enabled TLS 1.1 (RFC 4346) and TLS 1.2 (RFC 5246) by default
CHANGED: Added support for SPDY 3.1 protocol
DEVELOPER: Ability to reset style sheets using 'all:unset'
DEVELOPER: You can now choose to deobfuscate javascript in the debugger (see 762761)
DEVELOPER: Added support for scrolled fieldsets (see 261037)
DEVELOPER: Implemented allow-popups directive for iframe sandbox, enabling increased security (see 766282)
DEVELOPER: CSS cursor keywords -moz-grab and -moz-grabbing have been unprefixed (see 880672)
DEVELOPER: Added support for ES6 generators in SpiderMonkey (see blog post)
DEVELOPER: Implemented support for mathematical function Math.hypot() in ES6 (see 896264)
HTML5: Dashed line support on Canvas (see 768067)
FIXED: Get Azure/Skia content rendering working on Linux (see 740200)
FIXED: 27.0: Security fixes can be found here
Known Issues
Unresolved: crash in gfxContext::PushClipsToDT with Direct2D 1.1 (d3d11.dll 6.2 or 6.3) (see 805406)
Unresolved: Moving Firefox to background while playing a flash video in full screen mode and bring it back to view will freeze the app (see 809055)
Unresolved: Text Rendering Issues on Windows 7 with Platform Update KB2670838 (MSIE 10 Prerequisite) or on Windows 8.1 has a workaround (see 812695)
Förändringar v25.0 -> v25.0.1
What’s New
FIXED: 25.0.1: New security fixes can be found here
FIXED: 25.0.1: Pages sometimes wouldn't load without first moving the cursor
NEW: Web Audio support
NEW: The find bar is no longer shared between tabs
CHANGED: If away from Firefox for months, you now will be offered the option to reset it to its default state while preserving your essential information
CHANGED: Resetting Firefox no longer clears your browsing session
DEVELOPER: CSS3 background-attachment:local support to control background scrolling
DEVELOPER: Many new ES6 functions implemented
HTML5: iframe document content can now be specified inline
FIXED: Blank or missing page thumbnails when opening a new tab
Förändringar v24.0 -> v25.0
NEW: The find bar is no longer shared between tabs
CHANGED: If away from Firefox for months, you now will be offered the option to migrate another browser's history and settings
CHANGED: Resetting Firefox no longer clears your browsing session
DEVELOPER: CSS3 background-attachment:local support to control background scrolling
DEVELOPER: Many new ES6 functions implemented
HTML5: iframe document content can now be specified inline
Förändringar v23.0.1 -> v24.0
NEW Support for new scrollbar style in Mac OS X 10.7 and newer
NEW Implemented Close tabs to the right
NEW Social: Ability to tear-off chat windows to view separately by simply dragging them out
CHANGED Accessibility related improvements on using pinned tabs (see 577727)
CHANGED Removed support for Revocation Lists feature (see 867465)
CHANGED Performance improvements on New Tab Page loads (see 791670)
DEVELOPER Major SVG rendering improvements around Image tiling and scaling (see 600207 )
DEVELOPER Improved and unified Browser console for enhanced debugging experience, replacing existing Error console
DEVELOPER Removed support for sherlock files that are loaded from application or profile directory
FIXED Replace fixed-ratio audio resampler in webrtc.org capture code with Speex resampler and eliminate pseudo-44000Hz rate ( see 886886)
Förändringar v23.0 -> v23.0.1
What’s New
FIXED: 23.0.1 - Rendering glitches on H.264 video only in FF23 on Vista (901944)
FIXED: 23.0.1 - Spellchecking broken with non-ASCII characters in profile path (902532)
FIXED: 23.0.1 - Audio static/"burble"/breakup in Firefox to Firefox WebRTC calls (901527)
NEW: Mixed content blocking enabled to protects users from man-in-the-middle attacks and eavesdroppers on HTTPS pages (learn more)
NEW: Options panel created for Web Developer Toolbox
CHANGED: "Enable JavaScript" preference checkbox has been removed and user-set values will be reset to the default
CHANGED: Updated Firefox Logo
CHANGED: Improved about:memory's functional UI
CHANGED: Simplified interface for notifications of plugin installation
CHANGED: Enabled DXVA2 on Windows Vista+ to accelerate H.264 video decoding
CHANGED: Users can now switch to a new search provider across the entire browser
CHANGED: CSP policies using the standard syntax and semantics will now be enforced
CHANGED: "Load images automatically" and Always show the tab bar" checkboxes removed from preferences and reset to defaults. Want to hide one tab? Try this add-on.
CHANGED: rendering improvements (see bug 838675)
DEVELOPER: HTML5 form control implemented
DEVELOPER: Implemented a global browser console
DEVELOPER: Social share functionality
DEVELOPER: Added unprefixed requestAnimationFrame
DEVELOPER: Write more accessible pages on touch interfaces with new ARIA role for key buttons
DEVELOPER: Dropped blink effect from text-decoration: blink; and completely removed
Förändringar v22.0 -> v23.0 Beta 1
What’s New
NEW: Support for new scrollbar style in Mac OS X 10.7 and newer
NEW: Mixed content blocking enabled to protects users from man-in-the-middle attacks and eavesdroppers on HTTPS pages (learn more)
CHANGED: Improved about:memory's functional UI
CHANGED: Enabled DXVA2 on Windows Vista+ to accelerate H.264 video decoding
CHANGED: Updated Firefox Logo
CHANGED: "Load images automatically", "Enable JavaScript", and Always show the tab bar" checkboxes removed from preferences
CHANGED: Simplified interface for notifications of plugin installation
CHANGED: Users can now switch to a new search provider across the entire browser
CHANGED: CSP policies using the standard syntax and semantics will now be enforced
DEVELOPER: Implemented a global browser console
DEVELOPER: Social share functionality
DEVELOPER: HTML5 form control implemented
DEVELOPER: Write more accessible pages on touch interfaces with new ARIA role for key buttons
DEVELOPER: Added unprefixed requestAnimationFrame
DEVELOPER: New feature in toolbox: Nework Monitor
DEVELOPER: Dropped blink effect from text-decoration: blink; and completely removed
Förändringar v21.0 -> v22.0
What’s New
NEW: Windows: Firefox now follows display scaling options to render text larger on high-res displays
NEW: WebRTC is now enabled by default!
NEW: Mac OS X: Download progress in Dock application icon
NEW: HTML5 audio/video playback rate can now be changed
NEW: Social services management implemented in Add-ons Manager
NEW: asm.js optimizations (OdinMonkey) enabled for major performance improvements
CHANGED: Improved WebGL rendering performance through asynchronous canvas updates
CHANGED: Plain text files displayed within Firefox will now word-wrap
CHANGED: For user security, the |Components| object is no longer accessible from web content
CHANGED: Improved memory usage and display time when rendering images
CHANGED: Pointer Lock API can now be used outside of fullscreen
DEVELOPER: CSS3 Flexbox implemented and enabled by default
DEVELOPER: New Web Notifications API implemented
DEVELOPER: Added clipboardData API for JavaScript access to a user's clipboard
DEVELOPER: New built-in font inspector
HTML5: New HTML5 and
Förändringar v20.0.1 -> v21.0
NEW The Social API now supports multiple providers
NEW Enhanced three-state UI for Do Not Track (DNT)
NEW Firefox will suggest how to improve your application startup time if needed
NEW Preliminary implementation of Firefox Health Report
CHANGED Ability to restore removed thumbnails on New Tab Page
CHANGED CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none (bug 816298)
CHANGED Graphics related performance improvements (bug 809821)
CHANGED Removed E4X support from Spidermonkey
DEVELOPER Implemented Remote Profiling
DEVELOPER Integrated add-on SDK loader and API libraries into Firefox
HTML5 Added support for element
HTML5 Implemented scoped stylesheets
FIXED Some function keys may not work when pressed (833719)
FIXED Browsing and Download history clearing needs unification to avoid confusion on clearing download history (847627)
Förändringar v20.0 -> v20.0.1
FIXED 20.0.1 - Windows-only update to handle issues around handling UNC paths (see bug 846848)
NEW Per-window Private Browsing. Learn more.
NEW New download experience. Learn more.
NEW Ability to close hanging plugins, without the browser hanging
CHANGED Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.)
DEVELOPER Continued implementation of draft ECMAScript 6 - clear() and Math.imul
DEVELOPER New JavaScript Profiler tool
HTML5 getUserMedia implemented for web access to the user's camera and microphone (with user permission)
HTML5
Förändringar v19.0.2 -> v20.0
FIXED
20.0: Security fixes can be found here
NEW
Per-window Private Browsing. Learn more.
NEW
New download experience. Learn more.
NEW
Ability to close hanging plugins, without the browser hanging
CHANGED
Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.)
DEVELOPER
Continued implementation of draft ECMAScript 6 - clear() and Math.imul
DEVELOPER
New JavaScript Profiler tool
HTML5
getUserMedia implemented for web access to the user's camera and microphone (with user permission)
HTML5
Förändringar v19.0.1 -> v19.0.2
What’s New
FIXED. 19.0.2: Security-driven release, see details in the associated security advisory
FIXED. 19.0.1 (Windows 8 only): Fixed stability issue for some AMD Radeon HD graphics cards
NEW. Built-in PDF viewer
CHANGED. Canvas elements can export their content as an image blob using canvas.toBlob()
CHANGED. Startup performance improvements (bugs 715402 and 756313)
DEVELOPER. Debugger now supports pausing on exceptions and hiding non-enumerable properties
DEVELOPER. Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true)
DEVELOPER. There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true)
DEVELOPER. Web Console CSS links now open in the Style Editor
HTML5. CSS @page is now supported
HTML5. CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)
HTML5. CSS text-transform now supports full-width
FIXED. Certain valid WebGL drawing operations are incorrectly rejected, leaving incomplete rendering in affected pages (825205)
FIXED. Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode (802274)
FIXED. Plugins stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode (825734)
Known Issues
Unresolved. If you try to start Firefox using a locked profile, it will crash (see 573369)
Unresolved. For some users, scrolling in the main GMail window will be slower than usual (see 579260)
Unresolved. Mootools 1.2.x incompatible with Firefox 18 and newer.Fixed in Mootools 1.3 and newer (see 789036)
Unresolved. Some function keys may not work when pressed (see 833719)
Förändringar v19.0 -> v19.0.1
What’s New
FIXED. Windows 8 only: Fixed stability issue for some AMD Radeon HD graphics cards
NEW. Built-in PDF viewer
CHANGED. Canvas elements can export their content as an image blob using canvas.toBlob()
CHANGED. Startup performance improvements (bugs 715402 and 756313)
DEVELOPER. ebugger now supports pausing on exceptions and hiding non-enumerable properties
DEVELOPER. Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true)
DEVELOPER. There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true)
DEVELOPER. Web Console CSS links now open in the Style Editor
HTML5. CSS @page is now supported
HTML5. CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)
HTML5. CSS text-transform now supports full-width
FIXED. Certain valid WebGL drawing operations are incorrectly rejected, leaving incomplete rendering in affected pages (825205)
FIXED. Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode (802274)
FIXED. Plugins stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode (825734)
Known Issues
Unresolved. If you try to start Firefox using a locked profile, it will crash (see 573369)
Unresolved. For some users, scrolling in the main GMail window will be slower than usual (see 579260)
Unresolved. Mootools 1.2.x incompatible with Firefox 18 and newer.Fixed in Mootools 1.3 and newer (see 789036)
Unresolved. Some function keys may not work when pressed (see 833719)
Förändringar v18.0.2 -> v19.0
What’s New
NEW. Built-in PDF viewer
CHANGED. Canvas elements can export their content as an image blob using canvas.toBlob()
CHANGED. Startup performance improvements (bugs 715402 and 756313)
DEVELOPER. Debugger now supports pausing on exceptions and hiding non-enumerable properties
DEVELOPER. Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true)
DEVELOPER. There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true)
DEVELOPER. Web Console CSS links now open in the Style Editor
HTML5. CSS @page is now supported
HTML5. CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)
HTML5. CSS text-transform now supports full-width
FIXED. Certain valid WebGL drawing operations are incorrectly rejected, leaving incomplete rendering in affected pages (825205)
FIXED. Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode (802274)
FIXED. Plugins stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode (825734)
Known Issues
Unresolved. If you try to start Firefox using a locked profile, it will crash (see 573369)
Unresolved. For some users, scrolling in the main GMail window will be slower than usual (see 579260)
Unresolved. Mootools 1.2.x incompatible with Firefox 18 and newer.Fixed in Mootools 1.3 and newer (see 789036)
Unresolved. Some function keys may not work when pressed (see 833719)
FIXED 18.0.1: Unity player crashes on Mac OS X (bug 828954)
FIXED 18.0.1: Disabled HIDPI support on external monitors to avoid rendering glitches (bug 814434)
NEW Faster JavaScript performance via IonMonkey compiler
NEW Support for Retina Display on OS X 10.7 and up
NEW Preliminary support for WebRTC
CHANGED Experience better image quality with our new HTML scaling algorithm
CHANGED Performance improvements around tab switching
DEVELOPER Support for new DOM property window.devicePixelRatio
DEVELOPER Improvement in startup time through smart handling of signed extension certificates
HTML5 Support for W3C touch events implemented, taking the place of MozTouch events
FIXED Disable insecure content loading on HTTPS pages (62178)
FIXED Improved responsiveness for users on proxies (769764)
Known Issues
Unresolved. If you try to start Firefox using a locked profile, it will crash (see 573369)
Unresolved. For some users, scrolling in the main GMail window will be slower than usual (see 579260)
Unresolved. Animated Personas or Themes now require a workaround. See this support page
Unresolved. Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)
Unresolved. Mootools 1.2.x incompatible with Firefox 18 and newer.Fixed in Mootools 1.3 and newer (see 789036)
Unresolved. Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode (see 802274)
Unresolved. Certain valid WebGL drawing operations are incorrectly rejected, leaving incomplete rendering in affected pages (see 825205)
Unresolved. Plugins stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode (see 825734)
Förändringar v16.0.2 -> v17.0
What’s New
NEW. First revision of the Social API and support for Facebook Messenger
NEW. Click-to-play blocklisting implemented to prevent vulnerable plugin versions from running without the user's permission (see blog post)
CHANGED. Updated Awesome Bar experience with larger icons
CHANGED. Mac OS X 10.5 is no longer supported
DEVELOPER. JavaScript Maps and Sets are now iterable
DEVELOPER. SVG FillPaint and StrokePaint implemented
DEVELOPER. Improvements that make the Web Console, Debugger and Developer Toolbar faster and easier to use
DEVELOPER. New Markup panel in the Page Inspector allows easy editing of the DOM
HTML5. Sandbox attribute for iframes implemented, enabling increased security
FIXED. Over twenty performance improvements, including fixes around the New Tab page
FIXED. Pointer lock doesn't work in web apps (769150)
FIXED. Page scrolling on sites with fixed headers (780345)
Known Issues
Unresolved. If you try to start Firefox using a locked profile, it will crash (see 573369)
Unresolved. For some users, scrolling in the main GMail window will be slower than usual (see 579260)
Unresolved. Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)
Förändringar v16.0.1 -> v16.0.2
Critical: Vulnerability can be used to run attacker code and install software, requiring no user interaction beyond normal browsing.
High: Vulnerability can be used to gather sensitive data from sites in other windows or inject data or code into those sites, requiring no more than normal browsing actions.
Moderate: Vulnerabilities that would otherwise be High or Critical except they only work in uncommon non-default configurations or require the user to perform complicated and/or unlikely steps.
Low: Minor security vulnerabilities such as Denial of Service attacks, minor data leaks, or spoofs. (Undetectable spoofs of SSL indicia would have "High" impact because those are generally used to steal sensitive data intended for other sites.)
Förändringar v13.0.1 -> v14.0.1
What’s New
NEW. Google searches now utilize HTTPS
NEW. Full screen support for Mac OS X Lion implemented
NEW. Plugins can now be configured to only load on click (requires an about:config change)
NEW. The Awesome Bar now auto-completes typed URLs
CHANGED. Improved site identity manager, to prevent spoofing of an SSL connection with favicons
DEVELOPER. Pointer Lock API implemented
DEVELOPER. New API to prevent your display from sleeping
DEVELOPER. New text-transform and font-variant CSS improvements for Turkic languages and Greek
FIXED. Various security fixes
FIXED. GIF animation can gets stuck when src and image size are changed (743598)
FIXED. OS X: nsCocoaWindow::ConstrainPosition uses wrong screen in multi-display setup (752149)
FIXED. CSS :hover regression when an element's class name is set by Javascript (758885)
Known Issues
Unresolved. If you try to start Firefox using a locked profile, it will crash (see 573369)
Unresolved. For some users, scrolling in the main GMail window will be slower than usual (see 579260)
Unresolved. Focus rings keep growing when repeatedly tabbing through elements (see 720987)
Unresolved. Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)
Förändringar v10.0.1 -> v10.0.2
Fix a security issue:
Critical: Vulnerability can be used to run attacker code and install software, requiring no user interaction beyond normal browsing.
High: Vulnerability can be used to gather sensitive data from sites in other windows or inject data or code into those sites, requiring no more than normal browsing actions.
Moderate: Vulnerabilities that would otherwise be High or Critical except they only work in uncommon non-default configurations or require the user to perform complicated and/or unlikely steps.
Low: Minor security vulnerabilities such as Denial of Service attacks, minor data leaks, or spoofs. (Undetectable spoofs of SSL indicia would have "High" impact because those are generally used to steal sensitive data intended for other sites.)
Förändringar v10.0 -> v10.0.1
A top startup crash (bug is security locked because it's a crash)
Java applets cause text areas to hang (bug 718939)
Förändringar v9.0.1 -> v10.0
What?s New
NEW. The forward button is now hidden until you navigate back
NEW. Anti-Aliasing for WebGL is now implemented (see bug 615976)
NEW. Full Screen APIs allow you to build a web application that runs full screen (see the feature page)
NEW. CSS3 3D-Transforms are now supported (see bug 505115)
HTML5. New element for bi-directional text isolation, along with supporting CSS properties (see bugs 613149 and 662288)
DEVELOPER. Inspect tool with content highlighting, includes new CSS Style Inspector
DEVELOPER. We've added IndexedDB APIs to more closely match the specification
FIXED. Some users may experience a crash when moving bookmarks (681795)
Known Issues
Unresolved. Some synaptic touch pads are unable to vertical scroll
Unresolved. For some users, scrolling in the main GMail window will be slower than usual
Unresolved. If you try to start Firefox using a locked profile, it will crash
Unresolved. This version of Firefox will not work on Macintosh hardware with Power PC CPUs
Unresolved. Under certain conditions, scrolling and text input may be jerky
Resolved. Firefox notifications may not work properly with Growl 1.3 or later
Förändringar v8.0 -> v8.0.1
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.
Förändringar v7.0 -> v7.0.1
Fixed a rare issue where some users could find one or more of their add-ons hidden after a Firefox update
Förändringar v6.0 -> v6.0.1
Revoked the root certificate for DigiNotar due to fraudulent SSL certificate issuance (see bug 682927 and the security advisory)
