manifest.json

{
  "name": "737 Toolbox",
  "description": "Quickly generate and copy USSD code to use with GTB's *737# service",
  "theme_color": "#e14800",
  "background_color": "#fff",
  "display": "standalone",
  "orientation": "portrait",
  "start_url": "./",
  "lang": "en-US",
  "scope": "./",
  "icons": [
    {
      "src": "./img/app-icons/apple-icon-57x57.png",
      "sizes": "57x57",
      "type": "image/png"
    },
    {
      "src": "./img/app-icons/apple-icon-76x76.png",
      "sizes": "76x76",
      "type": "image/png"
    },
    {
      "src": "./img/app-icons/128-android.png",
      "sizes": "128x128",
      "type": "image/png"
    },
    {
      "src": "./img/app-icons/192-android.png",
      "sizes": "192x192",
      "type": "image/png"
    }
  ]
}