Examine source code of Vocabulary Puzzle

{
  "manifest_version": 2,
  "name": "Vocabulary Puzzle",
  "version": "1.0",
  "description": "A fun puzzle game that challenges users to translate Vietnamese vocabulary words into English, helping to build and reinforce language skills.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Vocabulary Puzzle"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{42f18a77-aa5f-448c-abda-b1c1ae682961}"
    }
  }
}