Updates 8/18/26 - Firefox 154

Firefox 154

New

Firefox's Local Network Access protections now extend to WebSocket connections. Websites that try to open a WebSocket to a device on the local network will now ask for permission first.
In Smart Window, Firefox can now suggest groups of related tabs and propose a name for each group.
Local Firefox profile backups are now available on macOS in addition to Windows and Linux, and backups can be restored across all three platforms.
Sites can now be exempted from having their cookies and site data cleared on shutdown without also being exempted from tracking protection and other cookie restrictions.
The full-page Translations feature now translates <iframe> content.
The full-page Translations feature now runs language identification on all page loads, resulting in an improved experience for offering translations to users.
Windows users can now choose a different Firefox app icon in Settings. This is not yet available for MSIX installations, macOS, or Linux, but is coming soon.
The address bar now includes a Manage AI quick action that opens the AI controls in Settings.
Performing a hard reload on a page (holding Shift while clicking the Refresh button) now also clears and updates its cached favicons.

Fixed an issue on macOS where closing a browser window could leave behind an invisible window that continued to capture mouse clicks over the area where it used to be.
Fixed an issue on Windows where an auto-hiding taskbar would not appear until the Firefox window had been minimized and restored after launch.
Fixed an issue where the Windows taskbar would appear in front of a full screen Picture-in-Picture window.
Fixed the Vertical Tabs sidebar staying visible in full screen mode. It now hides along with the toolbars and reappears when the cursor moves to the edge of the screen.
Fixed PDF documents not being scaled correctly in print preview when the Fit to Page Width option is used.
Various security fixes.

Video seeking is now significantly faster on all operating systems, making it quicker to jump to a point in a video.
Text selected in a PDF is now highlighted the same way as text on a web page, and the highlight color follows operating system settings such as high-contrast mode.
Firefox View is moving out of the toolbar by default for new profiles and for profiles where it hasn't been used recently. It can still be opened from List all tabs > View all tabs, or added back from the Customize toolbar menu.

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Available via the internal updater: Help / About Firefox

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