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X-Agent

Chrome/Chromium extension to spoof user agent. Modifies both outgoing requests 'User-Agent' header and javascript object including navigator.appVersion!

This extension doesn't have any UI and its fairly dumb, yet it works great! But on the other hand it doesn't have any tracking/Analytics code in it, and its short enough for you to review literally in 1 minute.

For maximum privacy use chromium and disable all plugins on chrome://plugins/ as they may easily disclose your platform.

For fresh user agents visit: Most common User Agents (updates daily)

Structure

  • manifest.json Standard extension configuration file
  • background.js Contains the outgoing request sniffer and modify header according to the variable on page head
  • xagentScript.js Small content script that inject the actual script
  • xagent.js Modifies the javascript navigator object according to the variables in the top of the script

Usage

  1. Download this project to a local folder on your machine (extracted in a folder)
  2. Modify the wanted userAgent in background.js and xagent.js
  3. Go to chrome://extensions/
  4. Enable Developer mode
  5. Click Load unpacked extension...
  6. Select the folder you unpacked the file to
  7. Optional: check 'Allow in incognito' (feel free to review the code before you do so)
  8. That's it! check results by visiting Most common User Agents for outgoing requests and http://www.quirksmode.org/js/detect.html for javascript object.