Examine source code of Youtube Embedded Finder

{
  "manifest_version": 3,
  "name": "YouTube Embed Finder",
  "version": "2.1",
  "description": "Finds YouTube videos in iframes and Next.js/React source code.",
  "browser_specific_settings": {
    "gecko": {
      "id": "yt-embed-finder@nkj.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}