# User-Agent Changer > Change your browser's User-Agent at the network level. Bypass server-side browser detection. With the latest and greatest Ui in the market Canonical page: [https://chrome-stats.com/d/user-agent-changer2901](https://chrome-stats.com/d/user-agent-changer2901) ## Overview - **ID:** `user-agent-changer2901` - **Platform:** Firefox - **Type:** Firefox add-on - **Status:** Available - **Publisher:** Shawon2901 - **Category:** web-development,privacy-security,tabs - **Daily users:** 51 - **Weekly downloads:** 14 - **Rating:** 5.00 / 5 (1 ratings) - **Version:** 6.0 - **Last updated:** 2026-05-03 - **First published:** 2026-04-28 - **Size:** 29 KB - **Data as of:** 2026-09-16 - **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/user-agent-changer2901/) ## Description πŸš€ OVERVIEW A high-performance Firefox extension that replaces your browser's User-Agent at the network level. By utilizing webRequest, it ensures web servers identify your browser and OS exactly as you choose, bypassing both client-side and server-side detection. βš™οΈ HOW IT WORKS Unlike scripts that only modify navigator.userAgent in JavaScript, this extension intercepts every outgoing HTTP request via webRequest.onBeforeSendHeaders. It rewrites headers before they leave your browser, providing a true network-level spoof that affects server-side logic and deep-packet inspection. πŸ†• NEW IN VERSION 6.0: CHROMIUM HEADER INJECTION To bypass modern anti-bot and fingerprinting systems (like Client Hints), the extension now dynamically injects five SEC-CH-UA headers when a Chromium-based UA is selected: β€’ Sec-Ch-Ua: Correct branding strings (e.g., "Google Chrome", "Chromium"). β€’ Sec-Ch-Ua-Mobile: Accurate ?1 (mobile) or ?0 (desktop) flags. β€’ Sec-Ch-Ua-Platform: Matches the spoofed OS (Android, Windows, iOS, etc.). β€’ Sec-Ch-Ua-Platform-Version: Corresponding version strings. β€’ Sec-Ch-Ua-Full-Version-List: Precise build versioning. πŸ”Ή Smart Logic: β€’ Brand Matching: Switches between Edge, Samsung, Opera, or Chrome brands based on active UA. β€’ Privacy Stripping: Firefox/Safari UAs have Client Hint headers stripped automatically. β€’ Accept Header Fix: Swaps Firefox’s format for Chrome’s on main_frame requests. 🌟 CORE FEATURES β€’ 50+ Preset User Agents across 9 categories. β€’ Dual Filtering Modes: Exclusion Mode and Inclusion Mode. β€’ "Always Real" Protection: Prevents breakage on cloudflare.com or 1.1.1.1. β€’ Intent Handling: Rewrites Android intent:// redirects into standard https:// URLs. β€’ Visual Feedback: Toolbar icon shows an "OFF" badge when inactive. πŸ› οΈ USE CASES β€’ Bypass server-side blocks targeting specific browsers. β€’ Test responsive rendering without device-switching. β€’ Reduce your unique browser fingerprinting surface. β€’ Trigger mobile-optimized responses from desktop Firefox. ## Rankings - #16,168 β€” Overall - #21 β€” agent - #48 β€” exchange - #54 β€” agenda - #169 β€” marketing - #208 β€” range ## Permissions and access ### Permissions - `webRequest` - `webRequestBlocking` - `storage` - `` ## Safety - **Risk impact:** Moderate 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 - [Advanced User-Agent](https://chrome-stats.com/d/advanced-user-agent) β€” 4 users - [User-Agent Switcher and Manager](https://chrome-stats.com/d/user-agent-string-switcher) β€” 84,203 users, 4.08 / 5 - [Random User-Agent (Switcher)](https://chrome-stats.com/d/random_user_agent) β€” 3,941 users, 4.00 / 5 - [User Agent Switcher – Change & Manage](https://chrome-stats.com/d/user-agent-switcher-change) β€” 3 users - [User Agent](https://chrome-stats.com/d/user-agent) β€” 343 users, 3.29 / 5 - [User-Agent Switcher PRO](https://chrome-stats.com/d/user-agent-switcher-pro) β€” 47 users, 4.00 / 5 - [User Agent Modifier](https://chrome-stats.com/d/user-agents-modifier) β€” 3 users - [Chrome UA Spoofer](https://chrome-stats.com/d/chrome-ua-spoofer) β€” 2 users - [User-Agent Switcher](https://chrome-stats.com/d/uaswitcher) β€” 61,908 users, 4.33 / 5 - [User-Agent Switcher and Simulator](https://chrome-stats.com/d/useragent-simulator-switcher) β€” 234 users, 4.64 / 5 - [User-Agent Auto Spoofer](https://chrome-stats.com/d/user-agent-auto-spoofer) β€” 8 users - [User-Agent Swithcer](https://chrome-stats.com/d/custom-user-agent-swithcer) β€” 4.87 / 5 --- Source: [Chrome-Stats](https://chrome-stats.com/d/user-agent-changer2901)