manifest.json

{
  "author": " Application",
  "background_color": "#3367D6",
  "description": "app",
  "display": "fullscreen",
  "icons": [
    {
      "src": "favicon.ico",
      "sizes": "64x64 32x32 24x24 16x16",
      "type": "image/x-icon"
    }
  ],
  "lang": "en-US",
  "name": "App",
  "orientation": "portrait",
  "scope": "./",
  "short_name": "App",
  "start_url": "index.html",
  "theme_color": "#0099ff",
  "version": "0.1"
}