Offline JWT Debugging with PWA
In secure environments, internet access is restricted. Production logs, air-gapped systems, and travel scenarios demand tools that work offline. JWT Viz delivers exactly that—full JWT inspection without network dependency.
How PWA Enables Offline Use
Progressive Web Apps (PWA) combine web accessibility with app-like reliability. JWT Viz uses:
- Service Worker: Caches all assets on first visit
- Web Manifest: Enables “Add to Home Screen”
- Client-Side Logic: No backend, no API calls
One-Click Installation
On desktop or mobile, click “Install” in the browser. JWT Viz appears as a native app—no App Store, no sideloading.
Use Cases for Offline Debugging
- Secure Facilities: Paste tokens from logs; analyze without exposing data
- Travel & Conferences: Demo JWT flows without Wi-Fi
- Incident Response: Export screenshots for reports on locked-down machines
Privacy by Design
Since everything runs in the browser:
- No telemetry
- No cookies
- No token storage
- Works behind firewalls and proxies
Single-File Distribution
Build output is one index.html + JS bundle. Email it, share via USB, or host internally.
FAQ
Do I need to rebuild for updates?
No—service worker auto-updates on next visit when online.
Can I use it on iOS?
Yes—add to Home Screen via Safari Share menu.
Is it safe for sensitive tokens?
Absolutely. Nothing leaves your device.
JWT debugging should never require an internet connection.