Version 156.0, first offered to Release channel users on September 15, 2026
Firefox(Firefox.com)Créé le 15 septembre 2026Mis à jour le 15 septembre 2026
New
Firefox on macOS can now be set to open automatically when the computer starts up, from the Startup section of Settings.
Localized Wikipedia and occasional sponsored suggestions in the address bar are now available in France, Germany, and Italy. These suggestions can be turned off in Firefox Suggest settings.
Fixed
Fixed an issue where dragging an image to a new position in a rich-text editor could replace it with a long line of text instead of moving it.
Fixed high-sample-rate FLAC audio in MP4 failing to play on sites such as Bilibili.
Fixed subtitles not appearing in the Picture-in-Picture window when they are turned on in the video player after the window has already opened.
Fixed bookmarks moving out of their folder when the folder and the bookmarks inside it were selected and dragged together in the Bookmarks sidebar.
Fixed the find bar becoming permanently unavailable in a tab after reversing the panes in Split View.
Fixed some sites failing to load when DNS over HTTPS is enabled and the site does not support HTTPS.
Fixed Firefox losing all network connectivity for some users with the built-in VPN enabled.
Fixed an issue on Windows where Firefox could block an auto-hiding taskbar from showing.
text-box-trim now uses the font metrics of a ::first-line pseudo-element when one applies, matching other browsers and the specification.
Community Contributions
With the release of Firefox 156, we are pleased to welcome the developers who contributed their first code change to Firefox in this release, 10 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:
