Examine source code of Vocabb Quest

{
  "manifest_version": 2,
  "name": "Vocab Quest",
  "version": "1.0",
  "description": "An engaging quiz game to enhance your Vietnamese-to-English vocabulary skills through interactive word challenges.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Vocab Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b0b5cbd5-b328-44a1-98b6-65b021ab6e6e}"
    }
  }
}