Thank you for helping test Firefox 3 Beta 4! This release is being made available for testing purposes only. You should read the release notes before getting started.
We want to hear all of your thoughts about this beta, especially if you encounter broken sites or other web weirdness. Drag this feedback button onto your bookmarks toolbar and click on it when you have something to tell us. We'll be waiting to hear from you! (Or, if you'd prefer, you can file a bug.)
(If you're interested in helping Mozilla test pre-release software, you might want to sign up on the beta tester mailing list.)
- Just start typing in the Location Bar to search your bookmarks and history. It adapts and learns as you use it.
- Pause and resume your downloads, and search through your download history by file or website name using the new Download Manager.
- Find out who you're talking to by clicking on the website icon.
- Experience the fastest Firefox ever — twice to three times as fast on today's complex web applications like Google Mail or Zoho Office.
- Try out the improved CSS support in Firefox 3.
- Test your site with the new DOM improvements, including support for extensions to the DOM added by other browsers.
- Add power to your web applications with JavaScript 1.8, included in Firefox 3.
- Find out how to take advantage of these new features with this guide.
- Use the new FUEL library to simplify many of your most common tasks.
- Experiment with the new Places API, a massive simplification to our history and bookmark platform, providing significantly more functionality and performance.
- Check out all the Improvements to XUL in Firefox 3.
- Be sure to look at all the details in our documentation for extension developers.