Examine source code of Vocabb_Challenge

{
  "manifest_version": 2,
  "name": "Vocab Challenge",
  "version": "1.0",
  "description": "An engaging browser extension to enhance your Vietnamese-to-English vocabulary through fun and interactive quizzes.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Vocab Challenge"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{033b7671-f203-4bb3-ba66-81c48b8ccdc4}"
    }
  }
}