manifest.json

{"name" : "brain beats",
    "short_name" : "brain beats",
    "description" : "A guided meditation app.",
    "start_url" : "./",
    "display" : "standalone",
    "orientation" : "portrait-primary",
    "lang" : "English",
    "background_color": "#ffffff",
    "theme_color": "#ffffff",
    "icons" : [{
      "src": "./img/128x128-mandala-1757304_1280.png",
      "sizes": "128x128",
      "type": "image/png",
      "purpose": "any"
    }, {
      "src": "./img/144x144-mandala-1757304_1280.png",
      "sizes": "144x144",
      "type": "image/png",
      "purpose": "any"
    }, {
      "src": "./img/152x152-mandala-1757304_1280.png",
      "sizes": "152x152",
      "type": "image/png",
      "purpose": "any"
    }, {
      "src": "./img/192x192-mandala-1757304_1280.png",
      "sizes": "192x192",
      "type": "image/png",
      "purpose": "any"
    }, {
      "src": "./img/256x256-mandala-1757304_1280.png",
      "sizes": "256x256",
      "type": "image/png",
      "purpose": "any"
    }, {
      "src": "./img/512x512-mandala-1757304_1280.png",
      "sizes": "512x512",
      "type": "image/png",
      "purpose": "any"
    },
    {
      "src": "./img/maskable_icon.png",
      "sizes": "196x196",
      "type": "image/png",
      "purpose": "maskable"
    }
  ]
}