JWT Inspector

About

JWT Inspector is a lightweight developer tool that helps you decode, inspect and validate JSON Web Tokens (JWTs) directly inside Chrome.

Features

✓ Decode JWT header and payload instantly
✓ View token expiration date and time
✓ Check security-related JWT claims
✓ Copy header and payload with one click
✓ Automatic local persistence of decoded tokens
✓ Works completely offline
✓ Clean and developer-friendly interface

Why JWT Inspector?

JWT Inspector allows developers, testers and security engineers to quickly inspect JWT tokens without sending any data to external servers.

Privacy First

All JWT decoding happens locally in your browser.

JWT Inspector does not:
• Collect user data
• Store tokens remotely
• Transmit tokens to any server
• Use analytics or tracking

Perfect For

• Backend Developers
• Frontend Developers
• Security Engineers
• QA Engineers
• API Testing
• OAuth & OpenID Connect Debugging
• Keycloak Users
• JWT Authentication Troubleshooting

No data leaves your browser.