Examine source code of YouTube Tag Display

{
  "manifest_version": 3,
  "name": "YouTube Tag Display",
  "version": "1.0",
  "description": "Extracts YouTube video tags and displays them beneath the video title.",
  "browser_specific_settings": {
    "gecko": {
      "id": "youtubetagdisplay@yourdomain.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/watch*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}