Categories: Firefox Firefox Beta

New, Faster Firefox Beta is Ready for Testing

A new Firefox Beta for Windows, Mac and Linux is now available for download and testing. This beta enhances JavaScript performance and adds developer tools that make Web browsing much faster.

What’s New in Firefox Beta:

  • Type Inference: Firefox Beta adds Type Inference to make JavaScript significantly faster. To learn more about how rich websites and Web apps with lots of pictures, videos and 3D graphics will load faster in Firefox, check out this blog post.
  • Mac OS X Lion Support: Firefox Beta has a new look that matches the Mac OS X Lion application toolbar and icon styles. Firefox Beta also supports the two finger swipe navigation gesture and makes it easier to use multiple monitors.
  • Do Not Track JavaScript Detection: Firefox Beta enables JavaScript to show developers when users choose to opt-out of behavioral tracking with the Do Not Track privacy feature.
  • Chunked XHR Support: Firefox Beta supports chunking for XHR requests so websites can receive data that’s part of a large XHR download in progress. This helps developers make websites and Web apps faster, especially those that download large sets of data or via AJAX.
  • If you’re a developer, please visit the Firefox for Developers page.

For more information: