# 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.

Canonical page: [https://chrome-stats.com/d/agent-spoofer](https://chrome-stats.com/d/agent-spoofer)

## Overview

- **ID:** `agent-spoofer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Agent Spoofer
- **Category:** web-development,privacy-security
- **Daily users:** 57
- **Weekly downloads:** 19
- **Version:** 2025.5.21.2
- **Last updated:** 2025-05-24
- **First published:** 2025-05-21
- **Size:** 140 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/agent-spoofer/)

## Description

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:
<ul><li><strong>Comprehensive Spoofing:</strong> Modify a wide range of browser attributes, including:<ul><li><strong>HTTP Headers:</strong> User-Agent, Accept, Accept-Language, and more.</li><li><strong>JavaScript <code>navigator</code> Properties:</strong> platform, languages, hardwareConcurrency, webdriver status, etc.</li><li><strong>Timezone:</strong> Consistently spoof your timezone across various JavaScript APIs (<code>Date</code> and <code>Intl</code>).</li></ul></li><li><strong>Profile-Based Management:</strong> Create and manage multiple, distinct browser profiles. Each profile saves a complete set of spoofing rules.</li><li><strong>Detailed Profile Editor:</strong> 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.</li><li><strong>Automatic Profile Rotation:</strong> 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.</li><li><strong>Ready-to-Use Defaults:</strong> Get started immediately with built-in profiles for popular browsers like Chrome, Edge, and Safari on various operating systems (Windows, macOS, Linux).</li><li><strong>Simple Controls:</strong> Easily toggle all spoofing on or off with a single click in the popup menu, which also conveniently displays your currently active profile.</li></ul>

## Rankings

- #15,157 — Overall
- #8 — spoon
- #12 — agent
- #39 — agenda

## Permissions and access

### Permissions

- `<all_urls>`
- `webRequest`
- `webRequestBlocking`
- `storage`
- `scripting`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

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- [Agent Spoof](https://chrome-stats.com/d/agent-spoof)
- [User-Agent Switcher PRO](https://chrome-stats.com/d/user-agent-switcher-pro) — 47 users, 4.00 / 5
- [User Agent Modifier](https://chrome-stats.com/d/user-agents-modifier) — 3 users
- [MorphAgent](https://chrome-stats.com/d/morphagent) — 10 users
- [Advanced User-Agent](https://chrome-stats.com/d/advanced-user-agent) — 5 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/agent-spoofer)