app_manifest.json

{

  "short_name": "My PWA",

  "name": "My first Progressive Web App",

  "description": "My first Progressive Web App is a very simple starter app",

  "start_url": "./?utm_source=web_app_manifest",

  "scope": "./",

  "dir": "ltr",

  "lang":"eng",

  "display": "standalone",

  "orientation": "portrait",

  "background_color": "#FFFFFF",

  "theme_color": "#2E3AA1",

  "icons": [{

        "src": "images/icon-128x128.png",

        "sizes": "128x128",

        "type": "image/png"

      }, {

        "src": "images/apple-touch-icon.png",

        "sizes": "152x152",

        "type": "image/png"

      }, {

        "src": "images/ms-touch-icon-144x144-precomposed.png",

        "sizes": "144x144",

        "type": "image/png"

      }, {

        "src": "images/chrome-touch-icon-192x192.png",

        "sizes": "192x192",

        "type": "image/png"

      },{

        "src": "images/chrome-splashscreen-icon-384x384.png",

        "sizes": "384x384",

        "type": "image/png"

      }]

}