Version 125.0.1 of Firefox, released on April 16, 2024, introduces support for the AV1 codec for Encrypted Media Extensions, enhancing video streaming quality. The PDF viewer now allows text highlighting, with features rolling out gradually to users. Key additions include displaying pinned tabs in the Open tabs section, tab indicators for media-playing tabs, bookmarks, and notifications, and proactive blocking of potentially untrustworthy downloads. The new URL Paste Suggestion feature simplifies visiting copied URLs. In response to user feedback, options like disabling the Pause Debugger Overlay have been reintroduced. Firefox now accommodates browser navigation and page interaction improvements with various new features.
https://www.mozilla.org/en-US/firefox/125.0.1/releasenotes/