manifest.json

{
  "name": "lichess.org",
  "short_name": "lichess.org",
  "start_url": ".",
  "display": "standalone",
  "background_color": "#fff",
  "description": "The (really) free, no-ads, open source chess server.",
  "icons": [{
    "src": "https://lichess1.org/assets/favicon.32.png",
    "sizes": "32x32",
    "type": "image/png"
  }, {
    "src": "https://lichess1.org/assets/favicon.64.png",
    "sizes": "64x64",
    "type": "image/png"
  }, {
    "src": "https://lichess1.org/assets/favicon.128.png",
    "sizes": "128x128",
    "type": "image/png"
  }, {
    "src": "https://lichess1.org/assets/favicon.192.png",
    "sizes": "192x192",
    "type": "image/png"
  }, {
    "src": "https://lichess1.org/assets/favicon.256.png",
    "sizes": "256x256",
    "type": "image/png"
  }],
  "related_applications": [{
    "platform": "play",
    "url": "https://play.google.com/store/apps/details?id=org.lichess.mobileapp"
  }, {
    "platform": "itunes",
    "url": "https://itunes.apple.com/us/app/lichess-free-online-chess/id968371784"
  }]
}