{ "name": "Histamin", "short_name": "Histamin", "start_url": "/", "display": "standalone",
  "background_color": "#FBFAF6", "theme_color": "#FBFAF6",
  "icons": [ { "src": "icon-192.png", "sizes": "192x192", "type": "image/png", "purpose": "any maskable" },
             { "src": "icon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "any maskable" } ] }