User-Agent Switcher and Simulator Firefox

User-Agent Switcher and Simulator

Switch browser UserAgent to simulate different devices and browsers

Features & Capabilities

The User-Agent Switcher and Simulator is a lightweight Chrome extension that gives you full control over your browser's User-Agent string. Quickly switch between multiple predefined profiles (Android, iPhone, Safari, HarmonyOS, WeChat, QQ Browser, Chrome, Edge, Firefox) or enter custom UA strings. A clean, intuitive popup interface makes selecting, creating, and saving profiles fast and easy, with persistent settings and no performance impact.

Ideal for web developers, QA testers, SEO specialists, marketers, and privacy-conscious users, this extension enables device and browser emulation without extra hardware. Use it for cross-browser compatibility checks, mobile rendering tests, SEO analysis, campaign validation, or to mask your browser identity for added privacy. Efficient, flexible, and developer-focused, it simplifies testing and analysis across diverse browsing environments.

User Growth & Download Statistics

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Muzikasi
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/useragent-simulator-switcher/

User Reviews

by Fi*****, 2026-06-09

by Fi*****, 2026-04-13

by Fi*****, 2025-10-05
View all user reviews ›

Is User-Agent Switcher and Simulator Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

User-Agent Switcher and Simulator requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

User-Agent Switcher and Simulator 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.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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Best User-Agent Switcher and Simulator Alternatives

Here are some Firefox add-ons that are similar to User-Agent Switcher and Simulator: