Examine source code of Vietnamese Vocab Practice

{
  "manifest_version": 2,
  "name": "Vietnamese Vocab Practice",
  "version": "1.0",
  "description": "Practice essential Vietnamese vocabulary with this fun and interactive quiz. Perfect for beginners and language learners wanting to master common words and phrases.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Vietnamese Vocab Practice"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c8305be-e031-4ca2-9b55-fa47220b727e}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}