Merlin
User-Agent Switcher

User-Agent Switcher

Easily override the browser's User-Agent string

What is User-Agent Switcher?
User-Agent Switcher is a Firefox extension. Its function is to help users easily change their browser's User-Agent string. This enables users to pretend to be another browser, a feature that can be beneficial in many different circumstances. Whether requiring read access for various websites, simulating mobile or desktop browsers, or needing to use a specific browser to access a site, User-Agent Switcher provides a convenient solution. Note, this will not add features to your browser; it will simply help bypass site restrictions based on the User-Agent string.
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Merlin
Stats
Version: 1.4.53 (Last updated: 2024-03-25)
Creation date: 2017-05-06
Weekly download count: 1,977
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
Permissions:
  • storage
  • tabs
  • webNavigation
  • webRequest
  • webRequestBlocking
  • <all_urls>
Size: 4.44M
URLs: Website
Stats date:

Chrome-Stats Rank

# 321 ▼ 1
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Other platforms

Not available on Chrome
Not available on Edge
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Chrome-Stats extension
Merlin
Summary
Analyze keywords

Easily pose as another browser by changing the User-Agent header.*

Pretending to be a different browser can be useful in a number of different situations:

  • Some web pages require you to log in or buy a subscription to view their content, but give full read access to search engines.
  • Some web pages determine whether you're using a mobile or desktop browser based on your user-agent.
  • Some web pages require you to use a specific browser to access their site.
  • And potentially more…
Note that your browser will not magically morph into a different piece of software just because it's pretending to be some other software. If a web site locks you out because your browser does not support a feature they require then changing the User-Agent will not make any difference.
  • Also changes navigator.userAgent, as well generating convincing values for several of the other navigator.* properties.

– Translating “User-Agent Switcher” to a new language Any help in translating this extension is greatly appreciated! To do so, simply visit our project on the WebLate hosted instance, create an account and either select an existing language or add a new one to get going. Thanks for helping out!

(Alternatively you may submit a merge request on GitLab with the updated translation files or send me the translations using the “Support E-mail”-Address.)

– Getting Help Found a bug or want a new feature? Please use the GitLab issue tracker to submit these instead of just mentioning them as part of your reviews. This way it becomes much easier for me to keep track of reported issues and get back to you if additional information is needed to help you.

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User reviews
User reviews summary
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
  • Ability to view pages as a different browser or device
  • Useful for downloading files from certain websites
  • Helps reduce problems with YouTube
Cons
  • Causes memory leak
  • Domain override function doesn't work
  • Development seems inactive
Most mentioned
  • CloudFlare human verification issue
  • Edge browser stuck on old version
  • YouTube blocking with Windows/Chrome user agent
Recent reviews
Please, add other browsers, yandex, opera ...etc.
by Firefox user 15214453, 2024-04-23
by Firefox user 18378994, 2024-04-19
by Firefox user 18378994, 2024-04-19
View all user reviews
Safety
Risk impact

User-Agent Switcher is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install User-Agent Switcher if you trust the publisher.

Risk likelihood

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

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Screenshots
User-Agent Switcher User-Agent Switcher User-Agent Switcher User-Agent Switcher