uptime-kuma/public/manifest.json

{
    "name": "Uptime Kuma",
    "short_name": "Uptime Kuma",
    "start_url": "./",
    "background_color": "#fff",
    "display": "standalone",
    "icons": [
        {
            "src": "icon-192x192.png",
            "sizes": "192x192",
            "type": "image/png"
        },
        {
            "src": "icon-512x512.png",
            "sizes": "512x512",
            "type": "image/png"
        }
    ]
}