// manifest.webmanifest
{
  "icons": [
    {
      "src": "ill/icon/icon192.png",
      "type": "image/png",
      "sizes": "192x192"
    },
    {
      "src": "ill/icon/icon512.png",
      "type": "image/png",
      "sizes": "512x512"
    },
    {
      "src": "ill/icon/icon.svg",
      "sizes": "48x48 72x72 96x96 120x120 128x128 144x144 152x152 180x180 192x192 256x256 384x384 512x512",
      "type": "image/svg+xml",
      "purpose": "any"
    }
  ]
}