{ "name": "1up", "short_name": "1up", "start_url": "/", "display": "standalone", "background_color": "#ffffff", "theme_color": "#ffffff", "icons": [ { "src": "/favicon-512x512.png", "sizes": "512x512", "type": "image/png" }, { "src": "/android-chrome-192x192.png", "sizes": "192x192", "type": "image/png" }, { "src": "/android-chrome-256x256.png", "sizes": "256x256", "type": "image/png" } ] }