{
  "short_name": "",
  "name": "",
  "icons": [
    {
      "src": "favicon-16x16.png",
      "type": "image/png",
      "sizes": "16x16"
    },
    {
      "src": "favicon-32x32.png",
      "type": "image/png",
      "sizes": "32x32"
    },
    {
      "src": "android-chrome-192x192.png",
      "type": "image/png",
      "sizes": "192x192"
    },
    {
      "src": "android-chrome-512x512.png",
      "type": "image/png",
      "sizes": "512x512"
    }
  ],
  "start_url": "/?utm_source=homescreen",
  "background_color": "#fff",
  "theme_color": "#fff"
}