manifest.json

{
    "name":"LocalNotes",
    "short_name":"localNotes",
    "start_url":"/",
    "icons":[{
        "src": "icons/android-launchericon-512-512.png",
        "sizes": "512x512",
        "purpose":"maskable"
      },
      {
        "src": "icons/android-launchericon-192-192.png",
        "sizes": "192x192"
      },
      {
        "src": "icons/android-launchericon-144-144.png",
        "sizes": "144x144"
      },
      {
        "src": "icons/android-launchericon-96-96.png",
        "sizes": "96x96"
      },
      {
        "src": "icons/android-launchericon-72-72.png",
        "sizes": "72x72"
      },
      {
        "src": "icons/android-launchericon-48-48.png",
        "sizes": "48x48"
      }],
    "display":"fullscreen",
    "orientation":"portrait",
    "theme_color":"#000000",
    "background_color":"#FFFFFF",
    "description":"Store notes locally in your browser",
    "scope":"/"
}