Agentium: User agent switcher

Agentium: User agent switcher

Agentium is an extension for controlling the user agent identity reported by your browser, allowing you for instance to view the mobile version of a website on your computer.

What is Agentium: User agent switcher?
Agentium: User Agent Switcher is an open-source Firefox add-on that allows you to control the user agent identity reported by your browser. With Agentium, you can select user agent identities from a predefined list or add custom identities, enabling you to view the mobile version of websites on your computer. The extension has a simple and clean user interface, and the source code is available on GitHub for forking and contributing.
By: Chuan Ji
Users: 105 ▼ -7
Rating: 3.67 (3)
Version: 0.1.1 (Last updated: 2018-11-04)
Creation date: 2018-11-04
Weekly download count: 7
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • contextMenus
  • storage
  • webRequest
  • webRequestBlocking
  • http://*/*
  • https://*/*
Size: 1.28M
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Chrome-Stats data as you browse the Firefox Browser Add-ons.
Chrome-Stats extension


  • Quickly select user agent identity from a default list of popular browsers
  • Add custom user agent identities
  • Simple & clean UI
Source code

Agentium is open-source software distributed under the Apache 2.0 License.

Please feel free to fork & contribute at

User reviews
Gan Jing World is a clean, curated universe and a dynamic, overlapping network of integrated platforms and services. ==>
by GanJingWorld, 2022-12-22
View all user reviews
Risk impact

Agentium: 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 Agentium: User agent switcher if you trust the publisher.

Risk likelihood

Agentium: User agent switcher has earned a fairly good reputation and likely can be trusted.

Upgrade to see risk analysis details