May 11th, 2012· 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
April 22nd, 2012· 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
· The column-fill CSS property has been implemented
· Support for the text-align-last CSS property has been added
· Experimental support for ECMAScript 6 Map and Set objects has been implemented
March 17th, 2012· 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
· The column-fill CSS property has been implemented
· Support for the text-align-last CSS property has been added
· Experimental support for ECMAScript 6 Map and Set objects has been implemented
March 13th, 2012· Firefox can now migrate your bookmarks, history, and cookies from Google Chrome
· With Sync enabled, add-ons can now be synchronized across your computers
· The CSS text-size-adjust property is now supported
· The outerHTML property is now supported on HTML elements
· View source syntax highlighting now uses the HTML5 parser (see bug 482921)
· The Style Editor for CSS editing is now available to web developers
· Web developers can now visualize a web page in 3D using the Page Inspector 3D View
· SPDY protocol support for faster page loads is now testable
· XMLHttpRequest now supports HTML parsing
· Files can now be stored in IndexedDB (see bug 661877)
· Websockets has now been unprefixed
· Redesigned media controls for HTML5 video
· Firefox notifications may not work properly with Growl 1.3 or later (691662)
February 6th, 2012· Firefox can now migrate your bookmarks, history, and cookies from Google Chrome
· With Sync enabled, add-ons can now be synchronized across your computers
· The CSS text-size-adjust property is now supported
· The outerHTML property is now supported on HTML elements
· View source syntax highlighting now uses the HTML5 parser (see bug 482921)
· The Style Editor for CSS editing is now available to web developers
· Web developers can now visualize a web page in 3D using the Page Inspector 3D View
· SPDY protocol support for faster page loads is now testable
· XMLHttpRequest now supports HTML parsing
· Files can now be stored in IndexedDB (see bug 661877)
· Websockets has now been unprefixed
· Redesigned media controls for HTML5 video
· Firefox notifications may not work properly with Growl 1.3 or later (691662)
February 6th, 2012· Tabs are now shown above the toolbar
· New wizard to sign up for new accounts
· More trust options added to junk settings (Bogofilter, DSPAM, POPFile)
· and several other platform fixes
January 31st, 2012· The forward button is now hidden until you navigate back
· Anti-Aliasing for WebGL is now implemented (see bug 615976)
· Full Screen APIs allow you to build a web application that runs full screen (see the feature page)
· CSS3 3D-Transforms are now supported (see bug 505115)
· New < bdi > element for bi-directional text isolation, along with supporting CSS properties (see bugs 613149 and 662288)
· Inspect tool with content highlighting, includes new CSS Style Inspector
· We've added IndexedDB APIs to more closely match the specification
· Some users may experience a crash when moving bookmarks (681795)
December 23rd, 2011· The forward button is now hidden until you navigate back
· Anti-Aliasing for WebGL is now implemented (see bug 615976)
· Full Screen APIs allow you to build a web application that runs full screen (see the feature page)
· CSS3 3D-Transforms are now supported (see bug 505115)
· New < bdi > element for bi-directional text isolation, along with supporting CSS properties (see bugs 613149 and 662288)
· Inspect tool with content highlighting, includes new CSS Style Inspector
· We've added IndexedDB APIs to more closely match the specification
· Some users may experience a crash when moving bookmarks (681795)
November 6th, 2011· 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 start-up time when windows are restored
· Improved tab animations when moving, reordering, or detaching tabs
· Improved performance and memory handling when using and elements
· Added 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
September 27th, 2011· Drastically improved memory use
· 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
· Added support for text-overflow: ellipsis
· Added support for the Web Timing specification
· Added an opt-in system for users to send performance data back to Mozilla to improve future versions of Firefox. This can be enabled by installing an add-on
· Fixed several stability issues
July 11th, 2011· The address bar now highlights the domain of the website you're 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
March 21st, 2011· Blacklisted a few invalid HTTPS certificates
· Updated localizations for 29 locales
· Added Vietnamese localization, bringing the total languages available in Firefox 4 to 83
March 10th, 2011· General stability, performance, and compatibility improvements.
February 28th, 2011· Increased performance while viewing Flash content
· Improved plugin compatibility with hardware acceleration enabled
· Hovering over links now displays the URL at the bottom of the window rather than in the location bar
· General stability, performance, and compatibility improvements
February 8th, 2011· Support for the proposed Do Not Track ("DNT") header
· Connection status messages are now shown in a small overlay
· WebGL has been re-enabled on Linux
· The default homepage design has been refreshed
· Firefox no longer switches into offline mode automatically
September 15th, 2010· Fixed a stability issue affecting Windows users.
· Fixed an issue causing rendering errors with plugins
· affecting Mac OS X users. See the complete changelist from the previous beta.
As well as these features from previous Firefox 4 Betas:
· Firefox 4 Beta is available in 39 languages.
· Support for the new proposed Audio Data API
· Direct2D Hardware Acceleration is now on by default for Windows 7 users
· Firefox button has a new look for Windows Vista and Windows 7 users
· Support for HSTS security protocol allowing sites to insist that they only be loaded over SSL.
· Firefox Sync is now included by default.
· A new feature 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.
· Tabs are now on top by default on Windows and OSX - Linux will be changing when the theme has been modified to support the change.
· You can turn any tab into an "App Tab" by right-clicking on it and selecting "Make into App Tab" from the context menu.
· Web developers can animate content using CSS Transitions.
· Responsiveness and scrolling improvements from the new retained layers layout system.
· JavaScript speed improvements due to engine optimizations.
· Changes to how XPCOM components are registered in order to help startup time and process separation.
· You can search for and switch to already open tabs in the Smart Location Bar.
· New Addons Manager and extension management API (UI will be changed before final release).
· Significant API improvements are available for JS-ctypes, a foreign function interface for extensions.
· The stop and reload buttons have been merged into a single button on Windows, Mac 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 for Windows, Linux, and Mac when there is a crash in the Adobe Flash, Apple Quicktime or Microsoft Silverlight plugins.
· CSS Transitions are partially supported.
· Full WebGL support is included but disabled by default at this time.
· Core Animation rendering model for plugins on Mac OS X. Plugins which also support this rendering model can now draw faster and more efficiently.
· Native support for the HD HTML5 WebM video format.
· An experimental Direct2D rendering backend is available on Windows, turned off by default.
· Web developers can use Websockets for a low complexity, low latency, bidirectional communications API.
· 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 (used for things like graphics and animations) more efficiently.
September 8th, 2010· Introduced support for the X-FRAME-OPTIONS HTTP response header. Site owners can use this to mitigate clickjacking attacks by ensuring that their content is not embedded into other sites.
· Fixed several security issues.
· Fixed several stability issues.
June 22nd, 2010· Firefox 3.6.4 provides uninterrupted browsing for Windows and Linux users when there is a crash in the Adobe Flash, Apple Quicktime or Microsoft Silverlight plugins.
· If a plugin crashes or freezes, it will not affect the rest of Firefox. You will be able to reload the page to restart the plugin and try again.
Firefox 3.6.4 also fixes the following issues found in previous versions of Firefox 3.6:
· Fixed several security issues.
· Fixed several stability issues.
April 21st, 2010· Firefox 3.6.4 provides uninterrupted browsing for Windows and Linux users when there is a crash in the Adobe Flash, Apple Quicktime or Microsoft Silverlight plugins.
· If a plugin crashes or freezes, it will not affect the rest of Firefox. You will be able to reload the page to restart the plugin and try again.
Firefox 3.6.4 also fixes the following issues found in previous versions of Firefox 3.6:
· Fixed several security issues.
· Fixed several stability issues.
April 2nd, 2010· Firefox 3.6.3 fixes a critical security issue that could potentially allow remote code execution (see bug 555109).
· You may also be interested in the Firefox 3.6.2 release notes for a list of changes in the previous version.
March 23rd, 2010· Fixed a critical security issue that could potentially allow remote code execution (see bug 552216).
· Fixed several additional security issues.
· Fixed several stability issues.
March 3rd, 2010New Features and Changes:
· Gecko 1.9.3 Alpha 2 introduces new features which can be tested by using this Mozilla Developer Preview. Many of these features are still in development, and while they will likely appear in some future version of Mozilla Firefox, some may be in earlier releases than others.
· Plugins On Windows and Linux, plugins (such as Flash and Silverlight) are now isolated from Firefox. Plugin crashes will not kill Firefox itself, and unresponsive plugins are automatically restarted.
· Security The SSL security system has been changed to fix a renegotiation flaw. For technical details, see the newsgroup posting announcing the change.
· HTML The placeholder attribute for and is now supported.
· User Interface The stop and reload buttons have been merged when they are adjacent on the toolbar. See bug 343396 for details.
· SVG Support for SMIL Animation in SVG. Support for animating some SVG attributes is still under development and the animateMotion element isn't supported yet.
· Stability Crash reports from plugin processes are now submitted automatically. Crash report submission can be disabled in Firefox preferences (Advanced / General / Submit crash reports).
· CSS Support for CSS Transitions. This support is not quite complete: support for animation of transforms and gradients has not yet been implemented.
· WebGL Support for WebGL, which is disabled by default but can be enabled by changing a preference. See this blog post and this blog post for more details.
· DOM Support for the getClientRects and getBoundingClientRect methods on Range objects. See bug 396392 for details.
· DOM Support for the setCapture and releaseCapture methods on DOM elements. See bug 503943 for details.
· HTML Support for the HTML5 History.pushState() and History.replaceState() methods and the popstate event. See bug 500328 for details.
· CSS Support for the -moz-image-rect() value for background-image. See bug 113577 for more details.
November 11th, 2009· More than 190 bug fixes from the last beta to improve performance, stability, security and features.
· This beta is available in more than 45 languages - get your local version.
· Users can now change their browser's appearance with a single click, with built in support for Personas.
· Firefox 3.6 will alert users about out of date plugins to keep them safe.
· Open, native video can now be displayed full screen, and supports poster frames.
· Support for the WOFF font format.
· Improved JavaScript performance, overall browser responsiveness and startup time.
· Support for new CSS, DOM and HTML5 web technologies.
August 3rd, 2009· MFSA 2009-43 Heap overflow in certificate regexp parsing
· MFSA 2009-42 Compromise of SSL-protected communication
· MFSA 2009-38 Data corruption with SOCKS5 reply containing DNS name longer than 15 characters
August 3rd, 2009· Several security and stability issues.
· Images with ICC profiles now render properly on all monitors.
July 17th, 2009· Several security issues.
· Several stability issues.
· An issue that was making Firefox take a long time to load on some Windows systems.
April 28th, 2009· Fixed a security issue.
· Fixed a major stability issue.
April 28th, 2009Firefox 3.5 Beta 4 is based on the Gecko 1.9.1 rendering platform, which has been under development for the past 10 months. Firefox 3.5 offers many changes over the previous version, supporting new web technologies, improving performance and ease of use, and adding new features for users:
· -This beta is now available in 70 languages - get your local version.
· -Improved tools for controlling your private data, including a Private Browsing Mode.
· -Better performance and stability with the new TraceMonkey JavaScript engine.
· -The ability to provide Location Aware Browsing using web standards for geolocation.
· -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: HTML5 and elements, downloadable fonts and other new CSS properties, JavaScript query selectors, HTML5 offline data storage for applications, and SVG transforms.
April 21st, 2009· Fixed several security issues.
· Fixed several stability issues.
· Many users experienced an issue where a corrupt local database caused Firefox to “lose” its stored cookies. (bug 470578)
· Fixed an issue where, starting with Firefox 3.0.7, inline attachments on popular webmail services (like AOL and AIM) would not display. (bug 482659)
· Large forms would sometimes take a long time to submit. (bug 426991)
· In certain cases, new windows would not have proper focus. (bug 446568)
March 5th, 2009· Fixed several security issues.
· Fixed several stability issues.
· Official releases for the Estonian, Kannada and Telugu languages are now available.
· Items in the "File" menu show as inactive after using the "Print" item from that menu - switching to a new tab restores them (bug 425844). This issue has been fixed.
· For some users, cookies would appear to go “missing” after a few days (bug 444600).
· Fixed several issues related to accessibility features.
November 12th, 2008· Fixed several security issues.
· Fixed several stability issues.
· Updated the internal Public Suffix list.
· Fixed an issue where the IME input tool used to enter Japanese, Korean, Chinese and Indic characters was covered by the "Add Bookmark" panel. (bug 433340)
· Enabled additional EV root certificates. (bug 451305)
· Fixed an issue where some passwords saved using Firefox 3.0.2 did not work properly. (bug 457358)
· In some cases, Firefox would not properly save proxy settings for protocols other than HTTP. (bug 446536)
September 8th, 2008· More Secure
· One-click site info: Click the site favicon in the location bar to see who owns the site and to check if your connection is protected from eavesdropping. Identity verification is prominently displayed and easier to understand. When a site uses Extended Validation (EV) SSL certificates, the site favicon button will turn green and show the name of the company you're connected to. (Try it here!)
· Malware Protection: malware protection warns users when they arrive at sites which are known to install viruses, spyware, trojans or other malware. (Try it here!)
· New Web Forgery Protection page: the content of pages suspected as web forgeries is no longer shown. (Try it here!)
· New SSL error pages: clearer and stricter error pages are used when Firefox encounters an invalid SSL certificate. (Try it here!)
· Add-ons and Plugin version check: Firefox now automatically checks add-on and plugin versions and will disable older, insecure versions.
· Secure add-on updates: to improve add-on update security, add-ons that provide updates in an insecure manner will be disabled.
· Anti-virus integration: Firefox will inform anti-virus software when downloading executables.
· Vista Parental Controls: Firefox now respects the Vista system-wide parental control setting for disabling file downloads.
· 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 to Use
· Easier password management: an information bar replaces the old password dialog so you can now save passwords after a successful login.
· Simplified add-on installation: the add-ons whitelist has been removed making it possible to install extensions from third-party sites in fewer clicks.
· New Download Manager: the revised download manager makes it much easier to locate downloaded files, and you can see and search on the name of the website where a file came from. Your active downloads and time remaining are always shown in the status bar as your files download.
· Resumable downloading: users can now resume downloads after restarting the browser or resetting your network connection.
· Full page zoom: from the View menu and via keyboard shortcuts, the new zooming feature lets you zoom in and out of entire pages, scaling the layout, text and images, or optionally only the text size. Your settings will be remembered whenever you return to the site.
· Podcasts and Videocasts can be associated with your media playback tools.
· Tab scrolling and quickmenu: tabs are easier to locate with the new tab scrolling and tab quickmenu.
· Save what you were doing: Firefox will prompt users to save tabs on exit.
· Optimized Open in Tabs behavior: opening a folder of bookmarks in tabs now appends the new tabs rather than overwriting.
· Location and Search bar size can now be customized with a simple resizer item.
· Text selection improvements: multiple text selections can be made with Ctrl/Cmd; double-click drag selects in "word-by-word" mode; triple-clicking selects a paragraph.
· Find toolbar: the Find toolbar now opens with the current selection.
· Plugin management: users can disable individual plugins in the Add-on Manager.
· Integration with Windows: Firefox now has improved Windows icons, and uses native user interface widgets in the browser and in web forms.
· Integration with the Mac: the new Firefox theme makes toolbars, icons, and other user interface elements look like a native OS X application. Firefox also uses OS X widgets and supports Growl for notifications of completed downloads and available updates. A combined back and forward control make it even easier to move between web pages.
· Integration with Linux: Firefox's default icons, buttons, and menu styles now use the native GTK theme.
· More Personal
· Star button: quickly add bookmarks from the location bar with a single click; a second click lets you file and tag them.
· Tags: associate keywords with your bookmarks to sort them by topic.
· Location bar & auto-complete: type in all or part of the title, tag or address of a page to see a list of matches from your history and bookmarks; a new display makes it easier to scan through the matching results and find that page you're looking for. Results are returned according to their frecency (a combination of frequency and recency of visits to that page) ensuring that you're seeing the most relevant matches. An adaptive learning algorithm further tunes the results to your patterns!
· Smart Bookmarks Folder: quickly access your recently bookmarked and tagged pages, as well as your more frequently visited pages with the new smart bookmarks folder on your bookmark toolbar.
· Places Organizer: view, organize and search through all of your bookmarks, tags, and browsing history with multiple views and smart folders to store your frequent searches. Create and restore full backups whenever you want.
· Web-based protocol handlers: web applications, such as your favorite webmail provider, can now be used instead of desktop applications for handling mailto: links from other sites. Similar support is available for other protocols (Web applications will have to first enable this by registering as handlers with Firefox).
· Download & Install Add-ons: the Add-ons Manager (Tools > Add-ons) can now be used to download and install a Firefox customization from the thousands of Add-ons available from our community add-ons website. When you first open the Add-ons Manager, a list of recommended Add-ons is shown.
· Easy to use Download Actions: a new Applications preferences pane provides a better UI for configuring handlers for various file types and protocol schemes.
· Improved Platform for Developers
· New graphics and font handling: new graphics and text rendering architectures in Gecko 1.9 provides rendering improvements in CSS, SVG as well as improved display of fonts with ligatures and complex scripts.
· Color management: (set gfx.color_management.enabled on in about:config and restart the browser to enable.) Firefox can now adjust images with embedded color profiles.
· Offline support: enables web applications to provide offline functionality (website authors must add support for offline browsing to their site for this feature to be available to users).
· A more complete overview of Firefox 3 for developers is available for website and add-on developers.
· Improved Performance
· Speed: improvements to our JavaScript engine as well as profile guided optimizations have resulted in continued improvements in performance. Compared to Firefox 2, web applications like Google Mail and Zoho Office run twice as fast in Firefox 3, and the popular SunSpider test from Apple shows improvements over previous releases.
· Memory usage: Several new technologies work together to reduce the amount of memory used by Firefox 3 over a web browsing session. Memory cycles are broken and collected by an automated cycle collector, a new memory allocator reduces fragmentation, hundreds of leaks have been fixed, and caching strategies have been tuned.
· Reliability: A user's bookmarks, history, cookies, and preferences are now stored in a transactionally secure database format which will prevent data loss even if their system crashes.
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