Examine source code of VietWord Puzzle

{
  "manifest_version": 2,
  "name": "VietWord Puzzle",
  "version": "1.0",
  "description": "A delightful quiz game to improve your Vietnamese-to-English vocabulary through engaging word translation challenges, perfect for language learners.",
  "icons": {
    "48": "word_puzzle_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "VietWord Puzzle"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4eb06c43-5a76-436e-95b0-3c1c4e1e543b}"
    }
  }
}