Beta or prerelease software is not intended for inexperienced users, as the software may contain bugs or may potentially damage your system. We strongly recommend that users exercise caution and save all mission-critical data before installing or using this software.
Help refine and polish the newest features almost ready for prime time.
With Firefox Beta, you get to test the latest performance, customization and security enhancements before they make it to our next version. Have an impact by helping to put the finishing touches on features and functionality.
What's new in this version:
- Support for Retina Display on OS X 10.7 and up
- Preliminary support for WebRTC
- Built-in PDF viewer
- Experience better image quality with our new HTML scaling algorithm
- Performance improvements around tab switching
- CSS3 Flexbox implemented
- Support for new DOM property window.devicePixelRatio
- Support for @supports added
- Improvement in startup time through smart handling of signed extension ... See all new features »