manifest.json

{
  "short_name": "Angle meter",
  "name": "Angle meter mobile",
  "description": "Measure angles using your smartphone. Mobile application protractor.",
  "display": "fullscreen",
  "id": "/",
  "scope": "/",
  "start_url": "/",
  "theme_color": "#0088FF",
  "background_color": "#FFFFFF",
  "icons": [
    {
      "src": "/images/icons/icon-128.png",
      "type": "image/png",
      "sizes": "128x128"
    },
    {
      "src": "/images/icons/icon-192.png",
      "type": "image/png",
      "sizes": "192x192"
    },
    {
      "src": "/images/icons/icon-512.png",
      "type": "image/png",
      "sizes": "512x512"
    }
  ],
  "screenshots": [
    {
      "src": "/images/screenshots/screenshot-narrow.png",
      "type": "image/png",
      "sizes": "540x720",
      "form_factor": "narrow"
    },
    {
      "src": "/images/screenshots/screenshot-wide.png",
      "type": "image/png",
      "sizes": "720x540",
      "form_factor": "wide"
    }
  ]
}