excalidraw/public/manifest.json

{
  "short_name": "Excalidraw",
  "name": "Excalidraw",
  "description": "Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.",
  "icons": [
    {
      "src": "logo-180x180.png",
      "sizes": "180x180",
      "type": "image/png"
    },
    {
      "src": "apple-touch-icon.png",
      "type": "image/png",
      "sizes": "256x256"
    }
  ],
  "start_url": "/",
  "display": "standalone",
  "theme_color": "#000000",
  "background_color": "#ffffff",
  "file_handlers": [
    {
      "action": "/",
      "accept": {
        "application/vnd.excalidraw+json": [".excalidraw"]
      }
    }
  ]
}