{
  "name": "Site name",  
  "version": "0.1",
  "short_name": "Site short name",
  "lang": "en-US",
  "start_url": ".",
  "display": "standalone",
  "theme_color": "#236478",
  "background_color": "#fff",
  "orientation": "portrait",
  "description": "Site description",
  "icons": [
    {
      "src": "",
      "sizes": "48x48",
      "type": "image/png"
    },
    {
      "src": "",
      "sizes": "72x72",
      "type": "image/png"
    },
    {
      "src": "",
      "sizes": "96x96",
      "type": "image/png"
    },
    {
      "src": "",
      "sizes": "144x144",
      "type": "image/png"
    },
    {
      "src": "",
      "sizes": "192x192",
      "type": "image/png"
    }
  ]
}