New

• More secure connections: Firefox can now automatically upgrade to HTTPS using HTTPS RR as Alt-Svc headers.

• Full-range color levels are now supported for video playback on many systems.

• Mac users can now access the macOS share options from the Firefox File menu.

• Support for images containing ICC v4 profiles is enabled on macOS.

Fixed

• Firefox performance with screen readers and other accessibility tools is no longer severely degraded if Mozilla Thunderbird is installed or updated after Firefox.

• macOS VoiceOver now correctly reports buttons and links marked as ‘expanded’ using the aria-expanded attribute.

• An open alert in a tab no longer causes performance issues in other tabs using the same process.

• Various security fixes

Changed

• The bookmark toolbar menus on macOS now follow Firefox visual styles.

• Certificate error pages have been redesigned for a better user experience.

• Continuing work to restructure Firefox’s JavaScript memory management to be more performant and use less memory.

Enterprise

• Various bug fixes and new policies have been implemented in the latest version of Firefox. See more details in the Firefox for Enterprise 92 Release Notes.

Developer

Developer Information