manifest.json

{
  "name": "MN90 Calcul",
  "short_name": "MN90-FFESSM",
  "description": "A MN90-FFESSM calculator made with JavaScript",
  "theme_color": "#445ef7",
  "background_color": "#70e1f5",
  "scope" : "./",
  "display": "fullscreen",
  "start_url": "./index.html",
  "icons": [
    {
      "src": "./icons/48x48.png",
      "type": "image/png",
      "sizes": "48x48"
    },
    {
      "src": "./icons/72x72.png",
      "type": "image/png",
      "sizes": "72x72"
    },
    {
      "src": "./icons/128x128.png",
      "type": "image/png",
      "sizes": "128x128"
    },
    {
      "src": "./icons/192x192.png",
      "type": "image/png",
      "sizes": "192x192"
    },
    {
      "src": "./icons/256x256.png",
      "type": "image/png",
      "sizes": "256x256"
    },
    {
      "src": "./icons/512x512.png",
      "type": "image/png",
      "sizes": "512x512"
    }
  ]
}