User-Agent Switcher

Name: User-Agent Switcher
Author: Quickly switch

By: Quickly switch

Quickly switch the browser User-Agent for testing and development.

This add-on was removed from Firefox Add-ons Store on 2026-05-19

Download

Features & Capabilities

This error indicates that the extension package is missing the required manifest.json file at the root level. Ensure the ZIP archive contains the extension files directly, not a parent folder, so Firefox can detect and validate the manifest file correctly.

User Growth & Download Statistics

Add-on

By:

Quickly switch

Daily users:

Version:

1.0 Last updated: 2026-03-16

Version code:

6180723

Creation date:

2026-03-13

Risk:

Permissions:

Size:

12.26KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-05-19

Compare stats and ranking:

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:

Quickly switch

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/browser-agent-switcher/

Website:

https://sunwineu.com

Is User-Agent Switcher 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 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 may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.