JWT Debugger
Decode and inspect your JSON Web Tokens.
Waiting for token......Decode and inspect JSON Web Tokens (JWT) locally. Check expiration claims without leaking production tokens.
Why This Tool Exists
I used to shudder every time I pasted a real token into an online debugger. I built this so I never have to worry about a third-party storing my user's session.
Key Capabilities
Core features that make this tool powerful.
Header/Payload Decode
Expiration visualizer
Signature Check (Local)
How It Works
Understanding the processing logic.
Accuracy & Reliability
Standard JWT spec RFC 7519.
Who Is This For?
Backend Devs
Auth debugging.
Common Mysteries & Fixes
Signature Validation
We can only check signature format, not validity (we don't have your server secret).
Real-World Scenarios
Debugging
Why is my token invalid?
Why Choose PrivaQuickTools
| Feature | PrivaQuickTools | Others |
|---|---|---|
| Privacy | 100% Local | Cloud |
Privacy & Security Guaranteed
We do not store, view, or upload your files. All processing happens in your browser's memory. When you close the tab, all data is wiped from memory.
Good to Know
Large files depends on your device RAM. Processing massive video/PDFs may be slower on mobile devices.
Benefits
- PrivacyTokens never leave your RAM.
When Not To Use
While we aim for perfection, browser-based tools have limits. This tool might not be the best fit for:
- Extremely large files (e.g., video over 2GB)
- Batch processing thousands of files at once
- Workflows requiring server-side collaboration or cloud storage
Frequently Asked Questions
Common questions about this tool.