manifest.json

{
  "short_name": "Calculator",
  "name": "React Calculator",
  "icons": [
    {
      "src": "favicon.ico",
      "sizes": "64x64 32x32 24x24 16x16",
      "type": "image/x-icon"
    },
    {
      "src": "logo192.png",
      "type": "image/png",
      "sizes": "192x192"
    },
    {
      "src": "logo512.png",
      "type": "image/png",
      "sizes": "512x512"
    }
  ],
  "start_url": "https://mitanshu21.github.io/react-calculator/",
  "display": "standalone",
  "theme_color": "#000000",
  "background_color": "#dfe9f5",
  "description": "Calculator created in react application.",
  "lang": "en",
  "orientation": "portrait-primary",
  "display_override": ["standalone"]
}