**Badging API**
[Service Worker](https://texonom.com/service-worker-df54a2fca9ca4927a6aaf7adc70c2da7) 






### Safari
> [Badging for Home Screen Web Apps](https://webkit.org/blog/14112/badging-for-home-screen-web-apps)

> [Badging API - Web APIs | MDN](https://developer.mozilla.org/en-US/docs/Web/API/Badging_API)





