Examine source code of APPRADIO PRO

{
  "manifest_version": 2,
  "name": "APPRADIO PRO",
  "description": "APPRADIO.PRO - Android, Apple, Windows, Smart Watch, SmartTV e Carros conectados com conteúdos criativos.",
  "version": "1.3",
  "icons": {
    "128": "images/logo-128.png"
  },
  "browser_action": {
    "default_icon": "images/logo.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "page": "background.html",
    "persistent": true
  }
}