Examine source code of WordWise Challenge

{
  "manifest_version": 2,
  "name": "WordWise Challenge",
  "version": "1.0",
  "description": "A fun and educational game to test your Vietnamese-to-English vocabulary skills. Answer questions to improve your word knowledge!",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "WordWise Challenge"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c978c818-1682-458a-8162-7c4ffec0a250}"
    }
  }
}