Examine source code of Viet Kitchen Quiz

{
  "manifest_version": 2,
  "name": "Viet Kitchen Quiz",
  "version": "1.0",
  "description": "Popup quiz: Vietnamese kitchen items to English. Everyday cooking vocabulary practice.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Viet Kitchen Quiz"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{87f95366-da1b-4659-91f9-1f36ffd1be0a}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}