Offline Apps

Summary

Building apps that remain usable, fully or partially, without a network connection, combining service workers, IndexedDB and thoughtful UI states for offline/online transitions.

How to Learn This

1Add an offline indicator that reacts to the browser's `online`/`offline` events.
2Queue user actions made offline and sync them once connectivity returns.
3Design what 'degraded but usable' looks like for your specific app.

IndexedDB

WebAssembly basics

More topics in Advanced Topics

WebSockets PWA Service Workers IndexedDB WebAssembly basics Micro Frontends Module Federation Internationalization (i18n)Localization (l10n)Feature Flags Monitoring (Sentry)Analytics (Google Analytics, Mixpanel)Security (XSS, CSRF, CSP)

Stuck on this topic? Ask an Insider

Get 1:1 guidance from people who've walked this exact path — free on the InsideEdge app.

Download