Now Firefox can help you keep your tabs organized, automatically. A local AI model identifies similar tabs, automatically organizes them into groups, and even suggests group names. Everything happens on your device to respect your privacy. Learn more here.

Vertical tabs users can now adjust the size of the tools areas at the bottom of the sidebar. To see fewer tools and more tabs, drag down the divider line which pushes extra tools into an overflow menu.

On Linux, Firefox uses less memory and no longer requires a forced restart after an update has been applied by a package manager.

Address autofill has been enabled for users in Brazil, Spain and Japan.

The Firefox address bar can now be used as a unit converter. The unit converter supports converting units of length, temperature, mass, force, and angular measurement, as well as timezones (e.g. “now in GMT” , “10am EDT to CET”). Selecting the result will copy it to your clipboard. Learn more here.

Firefox builds in Valencian now come with a built-in Catalan (Valencian variant) dictionary for the Firefox spellchecker.

The following languages are now available for translation:

• Albanian
• Gujarati
• Hebrew
• Hindi
• Kannada
• Malay
• Malayalam
• Persian
• Telugu

Various security fixes.

Firefox on Windows 11 now uses system provided font icons for the caption buttons, more in line with Windows 11 conventions.

You can find information about policy updates and enterprise specific bug fixes in the Firefox for Enterprise 141 Release Notes.

Firefox will now also clear the back-forward-cache when receiving the Clear-Site-Data: "cache" response header.

When creating a logpoint in the Debugger, there's now a checkbox allowing to output the stacktrace in addition to the log message in the Console.

Enabled the WebGPU API (spec; MDN) on Windows. For details, see the Mozilla Graphics Team Blog.

Implemented the closedby attribute and it's related closedBy property on dialogs indicating the types of user actions that can be used to close the associated <dialog> element.

Support for Cookies Having Independent Partitioned State (CHIPS) is now re-enabled, allowing developers to opt a cookie into storage partitioning per top-level site.

The HTMLElement.showPopover() and HTMLElement.togglePopover() methods now take an options.source argument referencing the popover invoker, and togglePopover() also takes a force resp. options.force argument to force the popover open or closed.

With the release of Firefox 141, we are pleased to welcome the developers who contributed their first code change to Firefox in this release, 12 of whom were brand new volunteers! Please join us in thanking each of these diligent and enthusiastic individuals, and take a look at their contributions:

• ales.astone: 1920385, 1968910
• Chris Vander Linden: 1888847
• Gabriel Astorgano[:astor}: 1911190
• Jelte Fennema: 1945951
• Mr. Beedell, Roke Julian Lockhart (RJLB): 1969599
• Nick Crast: 1965895
• Sajid Anwar [:sajidanwar]: 825197, 1969770
• Simon Wülker: 1971080
• Skye Green [:skyevg]: 1965646
• viet-hung.nhu: 1968288
• wilsu: 1956211
• наб: 1970690