Examine source code of Transportation & Vehicles

{
  "manifest_version": 2,
  "name": "Transportation & Vehicles",
  "version": "1.0",
  "description": "Popup game to practice Vietnamese names of transportation and vehicles in English – useful for travel and daily life vocabulary.",
  "icons": {
    "48": "vehicles_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Transportation & Vehicles"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{067ba5bd-4877-47cf-8e9a-5797eb0ee3c2}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}