manifest.json

{
  "name": "TypeScripted LitElement Skeleton",
  "short_name": "TS LitElement SK",
  "icons": [{
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      "sizes": "48x48",
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    },
    {
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      "sizes": "96x96",
      "type": "image/png"
    },
    {
      "src": "/assets/icons/polymer-skeleton-192x192.png",
      "sizes": "192x192",
      "type": "image/png"
    },
    {
      "src": "/assets/icons/polymer-skeleton-384x384.png",
      "sizes": "384x384",
      "type": "image/png"
    },
    {
      "src": "/assets/icons/polymer-skeleton-384x384.png",
      "sizes": "512x512",
      "type": "image/png"
    }
  ],
  "theme_color": "#A7FFEB",
  "background_color": "#ffffff",
  "display": "standalone",
  "start_url": "/",
  "orientation": "portrait"
}