Examine source code of Viet Places Explorer

{
  "manifest_version": 2,
  "name": "Viet Places Explorer",
  "version": "1.0",
  "description": "Master essential Vietnamese vocabulary for common places and locations. This lightweight interactive quiz helps you learn and retain the names of everyday spots through randomized flashcards and instant feedback.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Viet Places Explorer"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f7e33832-64d1-474c-a3fc-1e00c6deba8e}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}