midPWA
How do you debug Service Workers?
Updated May 17, 2026
Short answer
Use browser DevTools Application tab.
Deep explanation
Chrome DevTools allows inspecting SW lifecycle, cache storage, and network interception.
Real-world example
Fixing caching bugs in production PWAs.
Common mistakes
- Not unregistering old SWs during debugging.
Follow-up questions
- Where is SW panel?
- Can SW be disabled?