Download Firefox

Firefox is no longer supported on Windows 8.1 and below.

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

Firefox is no longer supported on macOS 10.14 and below.

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

Firefox Privacy Notice

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.

91.0beta Firefox Beta

July 13, 2021

Version 91.0beta, first offered to Beta channel users on July 13, 2021

New

  • Firefox now supports logging into Microsoft, work, and school accounts using Windows single sign-on. Learn more

  • The simplify page when printing feature is back! When printing, under More settings > Format select the Simplified option when available to get a clutter-free page. Learn more

  • HTTPS-First Policy: Firefox Private Browsing windows now attempt to make all connections to websites secure, and fall back to insecure connections only when websites do not support it. Learn more

  • We've added a new locale: Scots (sco)

  • The address bar now provides Switch to Tab results also in Private Browsing windows.

  • Firefox now automatically enables High Contrast Mode when "Increase Contrast" is checked on MacOS

Web Platform

Get the most recent version

All Firefox Beta downloads