ProxMenux/AppImage/public/manifest.json

{
  "name": "ProxMenux Monitor",
  "short_name": "ProxMenux",
  "description": "Proxmox System Dashboard and Monitor",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#2b2f36",
  "theme_color": "#2b2f36",
  "icons": [
    {
      "src": "/images/proxmenux-logo.png",
      "sizes": "256x256",
      "type": "image/png"
    }
  ]
}