Examine source code of VietGeo Quest

{
  "manifest_version": 2,
  "name": "VietGeo Quest",
  "version": "1.0",
  "description": "Test your knowledge of Vietnamese geography! Match English descriptions of cities, rivers, and landmarks to their Vietnamese names. Ideal for geography buffs and travelers exploring Vietnam!",
  "icons": {
    "48": "geo_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "VietGeo Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ec566d9f-5cbe-4aeb-b98d-171c03631910}"
    }
  }
}