{ "name": "Książka telefoniczna", "short_name": "Książka telefoniczna", "icons": [ { "src": "/android-chrome-192x192.png", "sizes": "192x192", "type": "image/png" }, { "src": "/android-chrome-384x384.png", "sizes": "384x384", "type": "image/png" } ], "theme_color": "#ffffff", "background_color": "#ffffff", "display": "standalone" }