manifest.json

{
    "name": "Explorer Federation",
    "short_name": "Explorer Federation",
    "description": "A space exploration game",
    "lang": "en",
    "dir": "ltr",
    "start_url": "/index.html",
    "display": "standalone",
    "background_color": "#181b24",
    "theme_color": "#181b24",
    "icons": [
        {
            "src": "img/icons/Icon-48x48.png",
            "sizes": "48x48",
            "type": "image/png",
            "purpose": "any"
        },
        {
            "src": "img/icons/Icon-48x48.png",
            "sizes": "48x48",
            "type": "image/png",
            "purpose": "maskable"
        },
        {
            "src": "img/icons/Icon-72x72.png",
            "sizes": "72x72",
            "type": "image/png",
            "purpose": "any"
        },
        {
            "src": "img/icons/Icon-72x72.png",
            "sizes": "72x72",
            "type": "image/png",
            "purpose": "maskable"
        },
        {
            "src": "img/icons/Icon-464x464.png",
            "sizes": "464x464",
            "type": "image/png",
            "purpose": "any"
        },
        {
            "src": "img/icons/Icon-464x464.png",
            "sizes": "464x464",
            "type": "image/png",
            "purpose": "maskable"
        },
        {
            "src": "img/icons/Icon-3000x3000.png",
            "sizes": "3000x3000",
            "type": "image/png",
            "purpose": "maskable"
        }
    ],
    "screenshots": [
        {
            "src": "img/screenshots/YOUR-APP-SCREENSHOT.png",
            "sizes": "1280x720",
            "type": "image/png",
            "form_factor": "wide",
            "label": "Describe what's happening in the screenshot."
        },
        {
            "src": "img/screenshots/YOUR-APP-SCREENSHOT.png",
            "sizes": "1280x720",
            "type": "image/png",
            "form_factor": "narrow",
            "label": "Describe what's happening in the screenshot."
        }
    ]
}