Examine source code of Quick Notes by URL

{
  "manifest_version": 2,
  "name": "Quick Notes by URL",
  "version": "1.0",
  "description": "Ghi chú nhanh gắn theo từng URL.",
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1258e588-cb90-43c2-bfb0-0c4f89aa61fa}"
    }
  }
}