{
    "name": "Firma mail Universidad Politécnica de Madrid",
    "short_name": "Firma Mail UPM",
    "start_url": ".",
    "icons": [
        { "src": "/icon-192.png", "sizes": "192x192", "type": "image/png" },
        { "src": "/icon-512.png", "sizes": "512x512", "type": "image/png" },
    ],
    "theme_color": "#1867b7",
    "background_color": "#fefefe",
}