glance/internal/assets/static/manifest.json

{
    "name": "Glance",
    "display": "standalone",
    "background_color": "#151519",
    "scope": "/",
    "start_url": "/",
    "icons": [
        {
            "src": "/static/app-icon.png",
            "type": "image/png",
            "sizes": "512x512"
        }
    ]
}