Examine source code of Smart Quiz Challenge

{
  "manifest_version": 2,
  "name": "Smart Quiz Challenge",
  "version": "1.0",
  "description": "A quick general knowledge quiz game to test and improve your skills in a fun way.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Smart Quiz Challenge"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c836ed18-9a99-4ac4-b2f4-c7d84f5764c9}"
    }
  }
}