Firefox Beta

November 8, 2017

Version 58.0beta, first offered to Beta channel users on November 8, 2017


  • Added support for credit card autofill

  • WebVR has been enabled for Mac OS X users

  • Added Nepali (ne-NP) locale

  • Optimize page load by caching JavaScript internal representation

  • Improved page render speed for Windows users with Off-Main-Thread Painting



  • User profiles created in Firefox 58 (and in future releases) are not supported in previous versions of Firefox. Users who downgrade to a previous version should create a new profile for that version. Learn about alternatives to downgrading on our support site.


  • On Windows and Linux, Firefox crashes occasionally on Intel Broadwell-U processors with old microcode. Windows users should ensure Windows Update is set to install updates. Linux users should ensure that the distribution package for Intel microcode is installed.

All Firefox Beta downloads