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