Examine source code of Word Journey

{
  "manifest_version": 2,
  "name": "Word Journey",
  "version": "1.0",
  "description": "A browser extension to boost your English vocabulary through fun quizzes translating Vietnamese words related to daily activities and traits. Ideal for language learners seeking an engaging way to learn.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Word Journey"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6dde44fc-8083-40a7-8ecb-1fdc8fe46af6}"
    }
  }
}