manifest.json

{
  "display": "fullscreen",
  "version": "1.0",
  "manifest_version": 1,

  "description": "KawaiiFX",
  "start_url": "index.html",
  "name": "KawaiiFX",
  "short_name": "KawaiiFX",
  "background_color": "#ffffff",
  "theme_color": "#ffffff",

  "icons": [
    {
      "src": "./manifest/icon.png",
      "sizes": "800x800",
      "type": "image/png"
    }
  ]
}