# Service Worker - Offline Page

When the end-user goes offline, it is possible to cache a page to their device to show a custom offline page. Examples of this would be sites such as YouTube and X.

Just use the JavaScript file below, make sure it's at the root of the domain in order for the web browser to pick it up. The HTML file below is an example of an offline page. I would recommend building your own custom offline page to tailor it for your website or web application.