Super simple add-on to set your own custom user-agent string for all websites. With multiple Firefox user profiles, can set a different string for each profile. It doesn’t work if you have syncing on for add-ons enabled, it will always replace the latest user-agent across profiles. Improvement ideas for future versions: Ability to (1) have an icon at the top which takes you to preferences, (2) reset the user-agent to browser default (for example with a blank user-agent). Anyway, TY for this!

by pienisieni, 2025-02-11

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Add-on safety

Risk impact

Change User-Agent requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Change User-Agent is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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