Download Firefox

Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit

Download a different build

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR
Firefox Privacy Notice
Get Mozilla VPN

Firefox Beta and Developer Edition
Release Notes

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

58.0beta Firefox Beta

November 8, 2017

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

New

  • 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

Fixed

Changed

  • 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.

Developer

Unresolved

  • 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.

Get the most recent version

All Firefox Beta downloads