"icons": [
  {
    "src": "pallettofavicon.png",
    "sizes": "180x180",
    "type": "image/png",
    "purpose": "any maskable"
  },
  {
    "src": "pallettofavicon.png",
    "sizes": "512x512",
    "type": "image/png",
    "purpose": "any maskable"
  }
]