User-Agent Switcher
Easily override the browser's User-Agent string
User-Agent Switcher | Change Browser User-Agent String
User-Agent Switcher is a Firefox add-on that allows you to easily override the browser's User-Agent string. It allows you to pose as another browser for various purposes such as accessing restricted content or determining mobile/desktop browser type.
Add-on stats
Manifest V2
By: ntninja
Rating: 4.39 
1 new ratings
(519)
Weekly download count: 1,698
Firefox on Android: Yes
Permissions:
- storage
- tabs
- webNavigation
- webRequest
- webRequestBlocking
- <all_urls>
Size: 4.45M
Email: us*****@ninetailed.ninja
URLs: Website
Full description: See detailed description
Ranking
# 271 ▼ 1
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Effective at bypassing restrictions on certain websites (e.g., logging in to Firefox-blocked sites)
- Allows custom user agent application per domain
- Simple and user-friendly interface
- Fixes buffering issues on YouTube
Cons
- Incompatibility with certain websites (e.g., Google Docs, mail.com)
- Can trigger security checks on some sites (e.g., Cloudflare)
- Issues with the version update (stated as corrupt by AMO)
- Ineffectiveness on Firefox for Android
Most mentioned
- Ability to switch user agents by domain is highly valued
- Effective for accessing sites that restrict Firefox users
- Problems with certain websites malfunctions while the add-on is active
User reviews
by Ghostlife, 2025-03-12
Works in Zen too! :)
by winphreak, 2025-03-08
Sadly Cloudflare security check is not letting me go to the webpage because I am spoofing that I'm on Linux (while my real OS is Windows) it has been working fine for years but not any more. Shame.
by BladeMaker, 2025-02-28
Add-on safety
Risk impact
User-Agent Switcher 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
We don't have sufficient data to confidently determine the risk likelihood of User-Agent Switcher. Use it at your own risk.
Risk likelihood analysis details
- High This extension was recently updated in the past month. New updates may not be stable or safe.
- Medium **** ********* *** ****** **** ****** ********* ********** *** *** ** ****** ** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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