{ "name": "Calculate Hub", "short_name": "Calculate Hub", "description": "Free online calculators for finance, health, math, and everyday use.", "start_url": "/", "display": "standalone", "background_color": "#ffffff", "theme_color": "#2563EB", "icons": [ { "src": "/favicon-192.png", "sizes": "192x192", "type": "image/png", "purpose": "any maskable" }, { "src": "/favicon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "any maskable" } ] }