manifest.json

{
    "name": "CGPA Result Forecaster",
    "short_name" : "CGPA Result Forecaster",
    "start_url": ".",
    "background_color": "#e0e6fc",
    "theme_color" : "#5d6b9c",
    "display": "standalone", 
    "orientation": "portrait",
    "icons" : [
        {
            "src": "images/calculator-logo-72.png",
            "sizes": "72x72",
            "type": "image/png"
        },
         {
          "src": "images/calculator-logo-144.png",
            "sizes": "144x144",
            "type": "image/png"
        },
          {
          "src": "images/calculator-logo-512.png",
            "sizes": "512x512",
            "type": "image/png"
        },
         {
          "src": "images/calculator-logo-152.png",
            "sizes": "152x152",
            "type": "image/png",
            "purpose": "any maskable"
        },
         {
          "src": "images/calculator-logo-124.png",
            "sizes": "124x124",
            "type": "image/png"
        },
         {
          "src": "images/calculator-logo-96.png",
            "sizes": "96x96",
            "type": "image/png"
        }
    ]
}