Examine source code of VocabExplorer

{
  "manifest_version": 2,
  "name": "Vocab Explorer",
  "version": "1.0",
  "description": "A fun quiz game to practice translating Vietnamese words into English, helping users expand their vocabulary knowledge.",
  "icons": {
    "48": "vocab_explorer_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Vocab Explorer"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f712928f-fb9d-4cbf-8b12-f65f3bdb8f7f}"
    }
  }
}