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JWT Debugger & Decoder | JSON Organizer
Inspect and debug JSON Web Tokens (JWT) directly in your browser with our secure JWT Debugger. JWTs are the standard for securely transmitting information between parties as a JSON object. For developers working with modern authentication systems, being able to decode and view the claims inside a token is essential for debugging authorization issues and ensuring security policies are enforced.
Our debugger decodes the Base64Url-encoded header, payload, and signature components instantly. You can view all user claims, expiration times, and algorithm details in a human-readable format. Most importantly, all decoding happens entirely within your browser. Your sensitive authentication tokens are never sent to a server, ensuring that your user credentials and system secrets remain private during your development process.
Key Features
- ✓Instantly decode JWT Header and Payload
- ✓Color-coded highlights for different token sections
- ✓Real-time expiration check (i.e., 'Is this token expired?')
- ✓Support for standard algorithms (HS256, RS256, etc.)
- ✓100% Private - No data leaves your machine
- ✓Readable JSON view of all token claims
Frequently Asked Questions
How do I use this JWT Debugger?
Simply paste your encoded token (the long string with two dots) into the input box. The tool will automatically split it into Header, Payload, and Signature and display the decoded JSON for each.
Is it safe to paste my tokens here?
Yes. Our tool is client-side only. We do not store or track any tokens. However, as a best practice, never paste 'Production' tokens into any online tool if you can avoid it.
Can I see the password in a JWT?
No. JWTs are designed to contain claims (like user ID or roles), but they should never contain sensitive information like passwords. The token itself is not 'encrypted', it is only 'signed' and 'encoded'.
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