Examine source code of Mobiles Platform Spoofer

{
  "name": "Mobile Platform Spoofer",
  "version": "1.3",
  "description": "Modifies the navigator.platform value while simulating a mobile viewport, allowing you to mimic mobile devices on websites that check for specific platform types. Perfect for testing mobile-friendly sites or bypassing platform-specific restrictions",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentscript.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f91cae49-1745-4474-8814-53ebc7721dc4}"
    }
  }
}