{ "name": "Sammlung", "short_name": "Sammlung", "start_url": "/", "display": "standalone",
  "background_color": "#0b0b0d", "theme_color": "#0b0b0d",
  "icons": [ {"src":"icon-192.png","sizes":"192x192","type":"image/png"}, {"src":"icon-512.png","sizes":"512x512","type":"image/png"} ] }