{
   "name":"",
   "short_name":"",
   "icons":[
      {
         "src":"/ico/android-chrome-72x72.png",
         "sizes":"72x72",
         "type":"image/png"
      },
      {
         "src":"/ico/android-chrome-192x192.png",
         "sizes":"192x192",
         "type":"image/png"
      },
      {
         "src":"/ico/android-chrome-256x256.png",
         "sizes":"256x256",
         "type":"image/png"
      }
   ],
   "theme_color":"#ffffff",
   "background_color":"#ffffff",
   "display":"standalone"
}