Examine source code of VietVocab Challenge

{
  "manifest_version": 2,
  "name": "VietVocab Challenge",
  "version": "1.0",
  "description": "A fun and interactive quiz to boost your Vietnamese-to-English vocabulary skills. Test your knowledge with a variety of words and their meanings, perfect for language learners!",
  "icons": {
    "48": "vocab_challenge_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "VietVocab Challenge"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{dcf12d29-c116-4b60-8af4-8e523d4d1bd7}"
    }
  }
}