RocketChat/Rocket.Chat

{
    "name": "Rocket.Chat",
    "short_name": "Rocket.Chat",
    "background_color": "#fff",
    "icons": [
        {
            "src": "/assets/favicon_192.png",
            "sizes": "192x192",
            "type": "image/png"
        },
        {
            "src": "/assets/favicon_512.png",
            "sizes": "512x512",
            "type": "image/png"
        }
    ],
    "start_url": "/home?homescreen",
    "display": "standalone"
}