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September 16th, 2025 13:19

Updates 9/16/25 - Firefox

Firefox Version 143.0, first offered to Release channel users on September 16, 2025


New

  • On Windows, Firefox now supports running websites as web apps pinned directly to the taskbar. These are sites that you can pin and run as simplified windows directly from the taskbar without losing access to your installed add-ons. This feature is not currently available for Firefox installs from the Microsoft Store.

  • Tabs can now be pinned by dragging them to the start of the tab strip, making it easier to keep important sites within reach.

    Screenshot showing the drag and drop area for pinning tabs

  • Copilot from Microsoft can now be chosen as a chatbot to use in the sidebar for quick access without leaving your main view.

  • When a site asks for camera access, it can now be previewed inside the permission dialog. This is especially helpful when switching between multiple cameras.

    Screenshot showing camera preview inside permission dialog

  • The Firefox address bar can now show you important dates and events. This feature supports displaying events (e.g. “Mother’s Day”) in the United States, United Kingdom, Germany, France, and Italy regions.

  • Firefox has expanded its Fingerprinting Protection by reporting constant values for several more attributes of user's computers.

  • When downloading a file in Private Browsing mode, Firefox now asks whether to keep or delete it after that session ends. You can adjust this behavior in Settings.

    Screenshot showing file deletion prompt
    Screenshot showing setting for always deleting files

  • Firefox now supports Windows UI Automation, which improves support for accessibility tools such as Windows Voice Access, Text Cursor Indicator and Narrator.

Fixed

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Available via the internal updater:   Help / About Firefox

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