Examine source code of Global Capitals Challenge

{
  "manifest_version": 2,
  "name": "Global Capitals Challenge",
  "version": "1.0",
  "description": "Test your geographical knowledge by identifying the correct capital cities of different countries around the world.",
  "icons": {
    "48": "capitals_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Global Capitals Challenge"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{afe44f9f-46ad-49b7-9c56-b853789208dc}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}