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Firefox 3 beta 3 now available for download

Please note: We do not recommend that anyone other than developers and testers download the Firefox 3 Beta 3 milestone release. It is intended for testing purposes only.

Firefox 3 Beta 3 is now available for download.

This is the eleventh developer milestone focused on testing the core functionality provided by many new features and changes to the platform scheduled for Firefox 3. Ongoing planning for Firefox 3 can be followed at the Firefox 3 Planning Center, as well as in mozilla.dev.planning and on irc.mozilla.org in #granparadiso.

New features and changes in this milestone that require feedback include:

* Improved security features such as: better presentation of website identity and security including support for Extended Validation (EV) SSL certificates, malware protection, stricter SSL error pages, anti-virus integration in the download manager.

* Improved ease of use through: easier add-on discovery and installation, improved download manager search and progress indication in the status bar, resumable downloading, full page zoom, and better integration with Windows Vista, Mac OS X and Linux.

* Richer personalization through: one-click bookmarking, smart bookmark folders, location bar that uses an algorithm based on site visit recency and frequency (called “frecency”) to provide better matches against your history and bookmarks for URLs and page titles, ability to register web applications as protocol handlers, and better customization of download actions for file types.

* Improved platform features such as: new graphics and font rendering architecture, JavaScript 1.8, major changes to the HTML rendering engine to provide better CSS, float-, and table layout support, native web page form controls, colour profile management, and offline application support.

* Performance improvements such as: better data reliability for user profiles, architectural improvements to speed up page rendering, over 350 memory leak fixes, a new XPCOM cycle collector to reduce entire classes of leaks, and reductions in the memory footprint.

(You can find out more about all of these features in the “What’s New” section of the release notes.)

Testers can download Firefox 3 Beta 3 builds for Windows, Mac OS X and Linux in over 30 different languages. Please be sure to read the full release notes before using this preview release. Developers should look at the Firefox 3 for Developers article on the Mozilla Developer Center.

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  • 4 weeks later...

Now updated to Beta version 4 :thumbsup:

If you have Beta version 3 it will automagically update when you next launch it

and if you are not currently trying version 3, see the manual download link at the end of the post

Firefox 3 Beta 4 Release Notes

Released: March 10, 2008

Firefox 3 Beta 4 is a developer preview release of Mozilla's next generation Firefox browser and is being made available for testing purposes only.

These beta releases are targeted to Web developers and our testing community to gain feedback before advancing to the next stage in the release process. The final version of Firefox 3 will be released when we qualify the product as fully ready for our users. Users of the latest released version of Firefox should not expect their add-ons to work properly with this beta.

Please see below for an extensive list of features and enhancements found in Firefox 3 Beta 4, as well as known issues and frequently asked questions. As always, we appreciate your feedback either through this feedback form or by filing a bug in Bugzilla.

What's New in Firefox 3

Firefox 3 is based on the Gecko 1.9 Web rendering platform, which has been under development for the past 31 months. Building on the previous release, Gecko 1.9 has more than 12,000 updates including some major re-architecting to provide improved performance, stability, rendering correctness, and code simplification and sustainability. Firefox 3 has been built on top of this new platform resulting in a more secure, easier to use, more personal product with a lot more under the hood to offer website and Firefox add-on developers.

[improved in Beta 4!] Firefox 3 Beta 4 includes more than 900 enhancements from the previous beta, including drastic improvements to performance and memory usage, as well as fixes for stability, platform enhancements and user interface improvements. Many of these improvements were based on community feedback from the previous beta.

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.

* [improved in Beta 4!] 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.

* [improved in Beta 4!] 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.

* [improved in Beta 4!] Integration with Vista: Firefox now has Vista-specific icons, and uses native user interface widgets in the browser and in web forms.

* [improved in Beta 4!] 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 spell-checker in web forms 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.

* [improved in Beta 4!] 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.

* [improved in Beta 4!] 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.

* 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

* [improved in Beta 4!] Speed: improvements to our JavaScript engine as well as profile guided optimizations have resulted in significant improvements in performance. Compared to Firefox 2, web applications like Google Mail and Zoho Office run twice as fast in Firefox 3 Beta 4, and the popular SunSpider test from Apple shows improvements over previous releases.

* [improved in Beta 4!] Memory usage: Several new technologies work together to reduce the amount of memory used by Firefox 3 Beta 4 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.

Downloading and Installing

System Requirements

Before installing, make sure your computer meets the system requirements.

Downloading Firefox 3 Beta 4

Mozilla provides Firefox 3 Beta 4 for Windows, Linux, and Mac OS X in a variety of languages. You can get the latest version of Firefox 3 Beta 4 here. For builds for other systems and languages not provided by Mozilla.org, see the Contributed Builds section at the end of this document.

Installing Firefox 3 Beta 4

Please note that installing Firefox 3 Beta 4 will overwrite your existing installation of Firefox on Mac OS X and Linux. On Windows, Firefox 3 Beta 4 installs in a new folder. For all systems, you won't lose any of your bookmarks or browsing history, but some of your extensions and other add-ons might not work until updates for them are made available.

Removing Firefox 3 Beta 4

You can remove Firefox 3 Beta 4 through the Control Panel in the Start Menu on Windows, by removing the Firefox application on OS X, or by removing the firefox folder on Linux.

Removing Firefox 3 Beta 4 won't remove your bookmarks, web browsing history, extensions or other add-ons. This data is stored in your profile folder, which is located in one of the following locations depending on your operating system:

Windows Vista Users\<UserName>\AppData\Roaming\Mozilla\Firefox

Windows 2000, XP, Server 2003 Documents and Settings\<UserName>\Application Data\Mozilla\Firefox

Mac OS X ~/Library/Application Support/Firefox

Linux and Unix systems ~/.mozilla/firefox

Any version of Firefox that you install after removing Firefox 3 Beta 4 will continue to use the data from this profile folder.

Extensions and Themes

Extensions installed under previous versions of Firefox may be incompatible and/or require updates to work with Firefox 3 Beta 4. Please report any issues to the maintainer of the extension.

When you install Firefox 3 Beta 4 all of your Extensions and Themes will be disabled until Firefox 3 Beta 4 determines that either a) they are compatible with the Firefox 3 Beta 4 release or b) there are newer versions available that are compatible.

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