Examine source code of YouTube Expander

{
  "manifest_version": 2,
  "name": "YouTube Expander",
  "version": "1.0",
  "description": "Expande vídeos do YouTube para o tamanho da janela com um clique",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "youtubeexpander@exemplo.com",
      "strict_min_version": "109.0"
    }
  },
  "data_collection_permissions": {
    "collectsTelemetry": {
      "required": false
    },
    "collectsSearchData": {
      "required": false
    }
  }
}