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Firefox Nightly
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.

105.0a1 Firefox Nightly

July 25, 2022

Version 105.0a1, first offered to Nightly channel users on July 25, 2022

Firefox Nightly gets updated every day and as a consequence, the release notes for the Nightly 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 on our @FirefoxNightly Twitter account as well as read our Nightly Blog.


  • The PDF viewer allows text writing, drawing and signature.

    Bug 1784272
  • Added an option to print only the current page from the print preview dialog

    Bug 1697226


  • Firefox is less likely to run out of memory on Linux and also performs better towards the rest of the system when memory is running low.

    Bug 1771712
  • On Windows, Firefox itself will be more likely to survive briefly running out of memory, even if individual tabs crash.

    Bug 1716727
  • Touchpad scrolling on macOS was made easier by reducing unintended diagonal scrolling on the opposite axis of the intended scroll axis.

    Bug 1770515

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