juniorPWA
What is offline capability in PWAs?
Updated May 17, 2026
Short answer
Offline capability allows PWAs to function without internet using cached data.
Deep explanation
Service Workers intercept network requests and serve cached responses when offline.
Real-world example
Offline reading apps like Pocket use caching.
Common mistakes
- Not implementing fallback pages.
Follow-up questions
- What happens if cache misses?
- Is full offline always possible?