manifest.json

{
    "name": "Sample PWA",
    "short_name": "PWA",
    "start_url": "index.html",
    "display": "fullscreen",
    "background-_color:": "#888",
    "description": "A simple PWA",
    "theme_color": "#000000",
    "lang": "en-us",
    "icons": [
        {
            "src": "images/catplainicon_97046(5)48.png",
            "sizes": "48x48",
            "type": "image/png"
        },
        {
            "src": "images/catplainicon_97046(3)72.png",
            "sizes": "72x72",
            "type": "image/png"
        },
        {
            "src": "images/catplainicon_97046(2)96.png",
            "sizes": "96x96",
            "type": "image/png"
        },
        {
            "src": "images/catplainicon_97046(1)144.png",
            "sizes": "144x144",
            "type": "image/png"
        },
        {
            "src": "images/catplainicon_97046(1)168.png",
            "sizes": "168x168",
            "type": "image/png"
        },
        {
            "src": "images/catplainicon_97046(1)192.png",
            "sizes": "192x192",
            "type": "image/png"
        },
        {
            "src": "images/catplainicon_97046_256.png",
            "sizes": "256x256",
            "type": "image/png"
        },
        {
            "src": "images/Android-icon512.png",
            "sizes": "512x512",
            "type": "image/png"
        }
    ]
}