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See what landed recently in Firefox Nightly!

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.

132.0a1 Firefox Nightly

September 2, 2024

Version 132.0a1, first offered to Nightly channel users on September 2, 2024

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 X account, our @FirefoxNightly@mozilla.social Mastodon account as well as read our Nightly Blog.

You can interact with other Firefox Nightly users and give your feedback to Mozilla staff in the Nightly Matrix room on chat.mozilla.org.

New

  • Starting with Firefox 129, Firefox Nightly blocks third-party cookie access with Enhanced Tracking Protection's Strict mode and also in Private Browsing.

    Bug 1898255

  • Starting with Firefox 129, Firefox Nightly will automatically try to use a secure HTTPS connection whenever possible when loading a page. This behavior is known as "HTTPS-First", or "HTTPS Upgrades", and has been the default in Firefox's private browsing mode since Firefox 91. Here is a blog post from when this feature was introduced in Private Browsing.

    Bug 1719271

  • Starting with Firefox 130, we’re launching a voting feature for the stories and articles on the New Tab page. You can vote up or down by hovering over the card, helping to improve future recommendations.

    Bug 1908696

Changed

  • Deprecated HLS playlist support in Firefox for Android. Extended testing showed no adverse impact as newer playback technologies have been widely adopted by websites.

    Bug 1911651

Developer

Web Platform

  • Starting with Firefox 131, support for the non-mandatory options argument to getBBox will get the bounding box of the element, including its stroke (e.g. element.getBBox({"stroke": true})). (Learn more)

    Bug 1914182

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