Examine source code of My IP Finder

{
  "manifest_version": 2,
  "name": "My IP Finder",
  "version": "1.0",
  "description": "Shows your IP address and location",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "https://api.ipify.org/*",
    "https://ipinfo.io/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "my-ip-finder@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "142.0"
    }
  }
}