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.

Firefox Beta — English (US)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Firefox Beta — English (US)

Firefox Beta is no longer supported on Windows 8.1 and below.

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

Firefox Beta is no longer supported on macOS 10.14 and below.

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

Version 104.0beta, first offered to Beta channel users on July 26, 2022

Warning: Features listed here may or may not make a final release of Firefox.

In addition to these release notes, you can follow ongoing development via our @FirefoxBeta Twitter account.

Subtitles are now available for Disney+ in Picture-in-Picture.
The PDF viewer allows text writing, drawing and signature.
Firefox now supports both the scroll-snap-stop property as well as re-snapping. You can use the scroll-snap-stop property's always and normal values to specify whether or not to pass the snap points, even when scrolling fast. Re-snapping tries to keep the last snap position after any content/layout changes.
The Firefox profiler can analyze power usage of a website (Apple M1 and Windows 11 only).
The Firefox UI itself will now be throttled for performance and battery usage when minimized or occluded, in the same way background tabs are.

Highlight color is preserved correctly after typing Enter in the mail composer of Yahoo Mail and Outlook.
After bypassing the https only error page navigating back would take you to the error page that was previously dismissed. Back now takes you to the previous site that was visited.
Paste unformatted shortcut (shift+ctrl/cmd+v) now works in plain text contexts, such as input and text area.