Control the content users see, even when they're offline
npm install upup
UpUp is a tiny JavaScript library that makes sure your users can always access your site's content, even when they're on a plane, in an elevator, or 20,000 leagues under the sea.
Mobile-First has become the de-facto standard for building modern sites. But in a world where everyone is mobile, an always-on connection isn't something we can rely on. It's time to start thinking Offline First.
With UpUp you control the content your users see, even when they are offline. And you can do it with just a single JavaScript command.
For example:
```html``offline.html` instead of an error.
Now every time your users return to your site and their connection is down, they will see the contents of
Check out some live demos and a full tutorial. Once you're up and rolling, you can read the full API Docs.
If your users are using a different or older browser, they will simply be unaffected by UpUp. Nothing will break, and they simply won't notice anything different.