Test PWA manifest icon sizes

manifest.json

{
  "short_name": "PWA",
  "name": "PWA tester",
  "description": "Test PWA manifest",
  "icons": [
    {
      "src": "https://dummyimage.com/72x72/000/fff&text=72",
      "type": "image/png",
      "sizes": "72x72"
    },
    {
      "src": "https://dummyimage.com/96x96/000/fff&text=96",
      "type": "image/png",
      "sizes": "96x96"
    },
    {
      "src": "https://dummyimage.com/128x128/000/fff&text=128",
      "type": "image/png",
      "sizes": "128x128"
    },
    {
      "src": "https://dummyimage.com/144x144/000/fff&text=144",
      "type": "image/png",
      "sizes": "144x144"
    },
    {
      "src": "https://dummyimage.com/152x152/000/fff&text=152",
      "type": "image/png",
      "sizes": "152x152"
    },
    {
      "src": "https://dummyimage.com/192x192/000/fff&text=192",
      "type": "image/png",
      "sizes": "192x192"
    },
    {
      "src": "https://dummyimage.com/384x384/000/fff&text=384",
      "type": "image/png",
      "sizes": "384x384"
    },
    {
      "src": "https://dummyimage.com/512x512/000/fff&text=512",
      "type": "image/png",
      "sizes": "512x512"
    }
  ],
  "start_url": "/?standalone=true",
  "background_color": "#f6f6f6",
  "display": "standalone",
  "scope": "/?standalone=true",
  "theme_color": "#f6f6f6"
}