Examine source code of Index.or.id

{
  "name": "Index.or.id",
  "description": "Indeks Halaman Anda dalam 24 Jam",
  "version": "1.1.2",
  "manifest_version": 2,
  "options_page": "options.html",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "tabs",
    "notifications",
    "storage"
  ],
  "icons": {
    "16": "/images/icon-16.png",
    "32": "/images/icon-32.png",
    "48": "/images/icon-48.png",
    "128": "/images/icon-128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/images/icon-16.png",
      "32": "/images/icon-32.png",
      "48": "/images/icon-48.png",
      "128": "/images/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{86651e46-512d-489a-a56d-46f0de842871}"
    }
  }
}