manifest.json

{
  "short_name": "Practimer",
  "name": "Practimer - a Practical Web Timer",
  "start_url": "https://practimer.me/#5m0s",
  "display": "browser",
  "scope": "/",
  "background_color": "#000000",
  "theme_color": "#000000",
  "lang": "",
  "orientation": "any",
  "description": "I had need for a timer. I didn't like any of the timers that were available to me, so I wrote one. I wrote it using Vanilla Javascript, location.hash, and a few interesting parts of CSS and HTML5.",
  "icons": [{
      "src": "https://practimer.me/images/icon-192.png",
      "sizes": "192x192"
    },
    {
      "src": "https://practimer.me/images/icon-512.png",
      "sizes": "512x512"
    }
  ]
}