Examine source code of Word Puzzle zip

{
  "manifest_version": 2,
  "name": "Word Puzzle",
  "version": "1.0",
  "description": "An interactive quiz game to practice translating English verbs to Vietnamese, designed to improve your language vocabulary.",
  "icons": {
    "48": "word_puzzle_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Word Puzzle"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7f5d3442-aaf5-4f75-b1a1-eba85e88dd7b}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}