{
    "icons": [
        {
            "src": "app/images/favicons/256.png",
            "type": "image/png", 
            "sizes": "256x256"
        },
        {
            "src": "app/images/favicons/512.png",
            "type": "image/png",
            "sizes": "512x512"
        }
    ]
}