manifest.json

{
  "name": "Swarm City",
  "default_locale": "en",
  "short_name": "Swarm City",
  "package_name": "swarmcity",
  "description": "Swarm City",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#F4F4F4",
  "theme_color": "#EFD96F",
  "orientation": "portrait",
  "icons": [{
      "src": "/images/icons/icon-36x36.png",
      "sizes": "36x36",
      "type": "image/png",
      "density": 0.75
    },{
      "src": "/images/icons/icon-48x48.png",
      "sizes": "48x48",
      "type": "image/png",
      "density": 1.0
    },{
      "src": "/images/icons/icon-72x72.png",
      "sizes": "72x72",
      "type": "image/png",
      "density": 1.5
    },{
      "src": "/images/icons/icon-128x128.png",
      "sizes": "128x128",
      "type": "image/png",
      "density": 2.0
    }, {
      "src": "/images/icons/icon-144x144.png",
      "sizes": "144x144",
      "type": "image/png",
      "density": 3.0
    }, {
      "src": "/images/icons/icon-192x192.png",
      "sizes": "192x192",
      "type": "image/png",
      "density": 4.0
    }, {
      "src": "/images/icons/icon-512x512.png",
      "sizes": "512x512",
      "type": "image/png",
      "density": 4.0
    }]
}