config.json

{
    "Android": {
        "res": {
            "drawable": {
                "icon.png": "48x48"
            },
            "drawable-ldpi": {
                "icon.png": "36x36"
            },
            "drawable-mdpi": {
                "icon.png": "48x48"
            },
            "drawable-hdpi": {
                "icon.png": "72x72"
            },
            "drawable-xhdpi": {
                "icon.png": "96x96"
            },
            "drawable-xxhdpi": {
                "icon.png": "144x144"
            },
            "drawable-xxxhdpi": {
                "icon.png": "192x192"
            },
            "drawable-nodpi": {
                "vr_icon.png": "512x512",
                "vr_icon_background.png": "512x512"
            }
        }
    },
    "IOS": {
        "Resources": {
            "Graphics": {
                "Icon1024.png": "1024x1024",
                "Icon20.png": "20x20",
                "Icon20@2x.png": "40x40",
                "Icon20@3x.png": "60x60",
                "Icon29.png": "29x29",
                "Icon29@2x.png": "58x58",
                "Icon29@3x.png": "87x87",
                "Icon40.png": "40x40",
                "Icon40@2x.png": "80x80",
                "Icon40@3x.png": "120x120",
                "Icon50.png": "50x50",
                "Icon50@2x.png": "100x100",
                "Icon57.png": "57x57",
                "Icon57@2x.png": "114x114",
                "Icon60@2x.png": "120x120",
                "Icon60@3x.png": "180x180",
                "Icon72.png": "72x72",
                "Icon72@2x.png": "144x144",
                "Icon76.png": "76x76",
                "Icon76@2x.png": "152x152",
                "Icon83.5@2x.png": "167x167"
            }
        }
    }
}