Agent Spoofer Firefox

Agent Spoofer

Agent Spoofer is a powerful and flexible extension for managing and spoofing your browser's identity. Go beyond simple User-Agent switching and take full control over how websites perceive your browser with a comprehensive, profile-based system.

Features & Capabilities

Whether you are a privacy-conscious user looking to reduce your digital footprint, a web developer testing site compatibility, or a security researcher, Agent Spoofer provides the tools you need.

Key Features:

  • Comprehensive Spoofing: Modify a wide range of browser attributes, including:
    • HTTP Headers: User-Agent, Accept, Accept-Language, and more.
    • JavaScript navigator Properties: platform, languages, hardwareConcurrency, webdriver status, etc.
    • Timezone: Consistently spoof your timezone across various JavaScript APIs (Date and Intl).
  • Profile-Based Management: Create and manage multiple, distinct browser profiles. Each profile saves a complete set of spoofing rules.
  • Detailed Profile Editor: A full-featured options page allows you to create custom profiles or edit the defaults. Enable, disable, or change the value of any individual attribute with fine-grained control.
  • Automatic Profile Rotation: Enhance your privacy by enabling the add-on to automatically select a new random profile from your chosen list every time you start your browser.
  • Ready-to-Use Defaults: Get started immediately with built-in profiles for popular browsers like Chrome, Edge, and Safari on various operating systems (Windows, macOS, Linux).
  • Simple Controls: Easily toggle all spoofing on or off with a single click in the popup menu, which also conveniently displays your currently active profile.

User Growth & Download Statistics

Manifest V2 Add-on
By:
Agent Spoofer
Daily users:
41 2
Version:
2025.5.21.2 Last updated: 2025-05-24
Version code:
5953896
Creation date:
2025-05-21
Risk:
High risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
139.77KB
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-19
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:
Agent Spoofer
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/agent-spoofer/

Is Agent Spoofer 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.

Agent Spoofer requires some sensitive permissions that could impact your browser and data security. 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.
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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.

Agent Spoofer 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 **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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Best Agent Spoofer Alternatives

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