{
    "name": "Demo",
    "start_url": "/app/",
    "display": "standalone",
    "background_color": "#fff",
    "icons": [{
        "src": "/apple-touch-icon.png",
        "sizes": "192x192",
        "type": "image/png",
        "purpose": "any maskable"
    },
    {
        "src": "/image/touch-icon-512.png",
        "sizes": "512x512",
        "type": "image/png",
        "purpose": "any maskable"
    }],
    "scope": "/app",
    "theme_color": "#6d3ce0"
  }