See what landed recently in Firefox Nightly!

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

Firefox Nightly — English (US)

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Firefox Nightly — English (US)

Firefox Nightly is no longer supported on Windows 8.1 and below.

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Firefox Nightly is no longer supported on macOS 10.14 and below.

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162.0a1 Firefox Nightly

Version 162.0a1, first offered to Nightly channel users on November 5, 2026

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 Bluesky account, our @FirefoxNightly 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.

Starting with Firefox 159, Firefox Nightly on Android automatically turns on DNS over HTTPS for users in the United States, as Firefox on desktop does, unless network checks indicate it should stay off.
Bug 2073500

Starting with Firefox 159, Firefox Nightly on macOS selects the word or link under the pointer when right-clicking like other macOS apps.
Bug 1751335
Starting with Firefox 161, the search engine button in the address bar is always visible in Firefox Nightly, not only when the address bar is focused.
Bug 2085310

Developer Information

Starting with Firefox 160, Nightly builds take the transforms of an anchor element into account when positioning elements with CSS anchor positioning.
Bug 2059840
Starting with Firefox 161, Firefox Nightly supports the CSS text-autospace-size property, which sets the width of the space text-autospace: normal adds between ideographic text, such as Chinese or Japanese, and other text.
Bug 2086765

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Firefox Nightly — English (US)

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See what landed recently in Firefox Nightly!

162.0a1 Firefox Nightly

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