sapphire-frontend/manifest.json

{
  "short_name": "Sapphire",
  "name": "Sapphire",
  "description": "Aggregating, free/libre instant messaging client",
  "lang": "en-CA",
  "icons": [
    {
      "src": "jelly-32.png",
      "type": "image/png",
      "sizes": "32x32"
    },
    {
      "src": "jelly-48.png",
      "type": "image/png",
      "sizes": "48x48"
    },
    {
      "src": "jelly-144.png",
      "type": "image/png",
      "sizes": "144x144"
    }
  ],
  "share_target": {
      "action": "/index.html#sharetarget",
      "params": {
          "title": "title",
          "text": "text",
          "url": "url"
      }
  },
  "start_url": "index.html",
  "display": "standalone",
  "background_color": "#2b2e39",
  "theme_color": "#2b2e39",
  "orientation": "portrait-primary",
  "scope": "/"
}