User Agent Masquerade

Name: User Agent Masquerade
Rating: 4.1429 (7 reviews)
Author: Nobuyuki Honda

By: Nobuyuki Honda

Adds a button to the toolbar to switch the User-Agent header.

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Features & Capabilities

User Agent Masquerade is a handy Chrome extension that adds a convenient button to your browser toolbar, allowing you to switch the User-Agent header with ease. It enables users, developers, and testers to quickly change how websites identify your browser, helping with compatibility testing, privacy, or accessing specific web content.

Although lightweight and simple, the extension supports theme-aware icon coloring by setting svg.context-properties.content.enabled to true in about:config. This helps integrate the extension's appearance with your browser's theme for a cohesive user experience. Ideal for anyone needing fast and flexible user-agent management directly from their toolbar.

User Growth & Download Statistics

Add-on Developer Tools Privacy & Security

By:

Daily users:

Rating:

Version:

0.3.1 Last updated: 2024-04-21

Version code:

5723653

Creation date:

2017-10-20

Risk:

Permissions:

Size:

14.64KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 14,800 ▲ 100

Other rankings

#23 in agent keyword 65 ▲ 1#39 in query keyword 12 #45 in agenda keyword 30 ▲ 1

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Nobuyuki Honda

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/user-agent-masquerade/

Website:

https://www.nk2.org/amo.html

User Reviews

by 退出*****, 2025-04-01

by 天灭*****, 2025-03-03

Gan Jing World is a clean, curated universe and a dynamic, overlapping network of integrated platforms and services. ==> https://www.ganjing.com

by Ga*****, 2022-12-24

View all user reviews ›

Is User Agent Masquerade 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 Masquerade 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 Masquerade has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

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