Firefox 160.0, released November 10, 2026, adds several browsing and media features. Picture-in-Picture now offers playback speeds from 0.25× to 2× when its window is medium-sized or larger. The experimental Mini Window can keep a tab or selected page content in an always-on-top window. Users can drag history entries from the sidebar to the tab strip, and the address bar offers “Paste and Search” for copied search terms. Firefox can block sites that repeatedly request permission to handle email or other links, and saved PDFs now expose MathML to screen readers. Media support expands to MKV files with FLAC, MP3, or PCM audio; macOS WebGL uses Apple’s Metal graphics API. French-language tab organization is also rolling out gradually.
The update fixes lost first characters in the address and search bars, improves visibility of the domain in the address bar, and resolves freezes during NTLM or Kerberos sign-ins. Other fixes address text selection and cursor placement, background links stealing focus on macOS, incorrect default apps for downloads, stuck simultaneous downloads, and PDF saving from the macOS print dialog. Firefox 160 also includes security fixes. For web developers, it adds support for on-device, real-time SpeechRecognition in 40 languages and recognizes the legacy WebKit placeholder pseudo-element as an alias for the standard placeholder selector. Firefox no longer supports Windows 8.1 or earlier, or macOS 10.14 or earlier; users on those systems are directed to the Extended Support Release.
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