Design Edge Cases First
Foundations & Process · edge cases
Updated 2026-07-28
- Happy paths hide problems.
- Test situations like:
- No data.
- Too much data.
- Slow loading.
- Failed actions.
- Long text.
- Missing permissions.
- Offline mode.
- Users experience edge cases eventually.
- A mature product is designed around reality, not screenshots.
Related guides
UX Handbook