Examine source code of Idiom Explorer

{
  "manifest_version": 2,
  "name": "Idiom Explorer",
  "version": "1.0",
  "description": "A fun and interactive quiz to learn popular Vietnamese idioms (thành ngữ) and their meanings. Perfect for language enthusiasts and learners looking to deepen their understanding of Vietnamese culture and expressions!",
  "icons": {
    "48": "idiom_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Idiom Explorer"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d0eb9d77-ac54-409e-bfba-cf57656fa8b4}"
    }
  }
}