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Release Notes

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

152.0beta Firefox Beta

May 20, 2026

Version 152.0beta, first offered to Beta channel users on May 20, 2026

Firefox Beta gets updated 3 times a week and as a consequence, the release notes for the Beta channel are updated continuously to reflect features that have reached sufficient maturity to benefit from community feedback and bug reports.

Warning: Features listed here may or may not make a final release of Firefox.

In addition to these release notes, you can follow ongoing development via the Firefox Trains website or our @FirefoxBeta Bluesky account.

New

  • Improved support for more advanced cursor movement commands, including those relating to paragraph boundaries, on macOS.

  • Video controls like play, pause, fullscreen, mute, and loop are now available in the right-click menu, even on sites like Instagram and TikTok where custom video players previously blocked access to them.

  • You can now shush your browser from the address bar by typing "mute" (or "shush" or "sssh") and using the address bar quick action. This will mute all tabs currently playing sound, in all Firefox windows.

  • High dynamic range video is now supported in Firefox on Windows 10 and 11 for HDR displays connected to AMD and NVIDIA GPUs (notably this excludes Intel+NVIDIA laptops for now), work is underway to enable this feature on more GPU vendors. To use this feature you must ensure that HDR mode is enabled for the relevant displays in Windows Settings - Display. HDR videos may appear brighter in Firefox than in other browsers, which will be improved in a future release, as well as optimizations for performance.

  • On Windows and Linux, you can now copy links via the tab context menu by right-clicking a tab and selecting Share > Copy Link, making it easy to copy a link without switching to the tab first. When multiple tabs are selected, you can copy all selected links at once. Windows users still retain access to Microsoft sharing options from the Share menu.

  • A "Send tab" toolbar button is now available which can be added via More Tools >Customize Toolbar.

  • When a website in a Private Browsing window may be broken because of tracker blocking, Firefox now shows an infobar after a reload. Clicking "Reload" in the infobar disables tracker blocking for that tab and site and reloads the page. All other tracking protections remain active.

Fixed

  • In multiple monitor situations, the About Firefox window now more reliably opens on the display with the most recently-used Firefox window.

  • Fixed a number of text editing commands involving arrow keys in right-to-left languages on macOS.

  • GTK: Fixed the direction of word-based selection commands in RTL text fields.

  • Improved the reliability of saving images when dragging images to the desktop or Finder windows on macOS.

  • On macOS, dragging images from Firefox to the desktop or into desktop folders now correctly places items where they are dropped.

Changed

  • Site zooming via keyboard or mouse now supports more and smaller increments.

  • To ensure a seamless browsing experience, when a PDF or internally handled file finishes downloading, it now opens in a background tab if you have switched tabs or closed the original page.

  • In Firefox for Android, sharing a remote PDF will now share the file itself, rather than its URL, that you can still share by copying it from the awesomebar.

Developer

Web Platform

  • Web Notifications can now have action buttons via actions option. Added actions can show up as buttons below notification text, or in "Options" list in case of macOS.

  • The field-sizing property is now available, allowing form controls to adjust in size to fit their contents.

  • Firefox now supports the WebAuthn Related Origin Request feature, which simplifies login flows by making Passkeys usable from multiple domains.

  • Firefox now supports a limited subset of the non-standard ::-webkit-scrollbar pseudo-element to improve web compatibility:

    • Rules with non-zero width/height disable overlay scrollbars for the affected container.
    • display: none on ::-webkit-scrollbar behaves like scrollbar-width: none, hiding the scrollbar.
    • @supports selector(::-webkit-scrollbar) now evaluates to true.
    • Full styling capabilities (colors, border-radius, etc.) are intentionally not supported

  • The Pointer Lock API now supports the unadjustedMovement option, allowing sites to receive raw mouse-movement data unaffected by OS-level acceleration.

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