{
  "name": "App",
  "short_name": "App",
  "icons": [
    {"src": "favicon_192.png", "sizes": "192x192", "type": "image/png"},
    {"src": "favicon_256.png", "sizes": "256x256", "type": "image/png"}
  ],
  "theme_color": "#ffffff",
  "background_color": "#ffffff",
  "display": "standalone"
}