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Preview of User Agent UnNightlyfier

User Agent UnNightlyfier by MonterraByte

Changes the version number in the user agent of Nightly (and Beta) versions of Firefox to match the release version of Firefox, which allows using those versions without making your fingerprint (much) more unique.

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Extension Metadata

About this extension
This add-on modifies the user agent of Nightly and Beta versions of Firefox to match the regular version. As those versions of Firefox have significantly fewer users, they can be identified more easily by trackers; changing the user agent allows Nightly and Beta users to blend with regular Firefox users.

Important: Firefox Beta can't be detected automatically, so Firefox Beta users should go to the add-on preferences and tick the appropriate checkbox.

This add-on has no effect when installed on a regular release of Firefox (unless you incorrectly tick the checkbox in the settings, which will cause your user agent to be a version behind).
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Permissions and data

Required permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
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More information
Add-on Links
  • Homepage
  • Support site
Version
1.0.1
Size
31.6 KB
Last updated
3 days ago (Dec 7, 2025)
Related Categories
  • Privacy & Security
License
GNU General Public License v3.0 only
Version History
  • See all versions
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