{
  "name": "",
  "short_name": "",
  "icons": [
      {
        "src": "/img/icon96.png",
        "type": "image/png",
        "sizes": "96x96"
        
      },
      {
        "src": "/img/icon144.png",
        "type": "image/png",
        "sizes": "144x144"
        
      },
      {
        "src": "/img/icon192.png",
        "type": "image/png",
        "sizes": "192x192"
       
      },
      {
        "src": "/img/icon512.png",
        "type": "image/png",
        "sizes": "512x512"
    
      },
      {
        "src": "/img/icon.png",
        "sizes": "196x196",
        "type": "image/png",
        "purpose": "any maskable"
      }],
  "start_url": "start_url",
  "display": "browser",
  "background_color": "#ffffff",
  "theme_color": "#ffffff"
}