Examine source code of Viet Basic Vocab

{
  "manifest_version": 2,
  "name": "Viet Basic Vocab",
  "version": "1.0",
  "description": "A simple and engaging popup quiz to help you learn essential Vietnamese vocabulary and common everyday phrases. Perfect for travelers, beginners, and anyone who wants to quickly practice practical Vietnamese through fun, repeated challenges.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Viet Basic Vocab"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{df0b4d3b-0ca6-4d78-8eca-9a9b6906f697}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}