{
  "short_name": "Letter card App",
  "name": "My Letter card App",
  "display": "standalone",
  "orientation": "portrait",
  "start_url": ".",
  "theme_color": "#ffffff",
  "background_color": "#eeeeee",
  "icons": [
    {
      "src": "assets/icons/icon-48.webp",
      "type": "image/png",
      "sizes": "48x48",
      "purpose": "any maskable"
    },
    {
      "src": "assets/icons/icon-72.webp",
      "type": "image/png",
      "sizes": "72x72",
      "purpose": "any maskable"
    },
    {
      "src": "assets/icons/icon-96.webp",
      "type": "image/png",
      "sizes": "96x96",
      "purpose": "any maskable"
    },
    {
      "src": "assets/icons/icon-128.webp",
      "type": "image/png",
      "sizes": "128x128",
      "purpose": "any maskable"
    },
    {
      "src": "assets/icons/icon-192.webp",
      "type": "image/png",
      "sizes": "192x192",
      "purpose": "any maskable"
    },
    {
      "src": "assets/icons/icon-256.webp",
      "type": "image/png",
      "sizes": "256x256",
      "purpose": "any maskable"
    },
    {
      "src": "assets/icons/icon-512.webp",
      "type": "image/png",
      "sizes": "512x512",
      "purpose": "any maskable"
    }
  ]
}