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JWT Decoder & Debugger
Decode, verify, and inspect JSON Web Tokens. All processing happens locally.
JWT Token0 chars
Header
Decoded header will appear here...
Payload
Decoded payload will appear here...
Signature
Signature will appear here...
Features
- • Decode JWT header and payload
- • Verify HS256 signatures with secret
- • Check token expiration status
- • Copy decoded parts individually
Privacy
All decoding happens entirely in your browser. Your tokens and secrets never leave your device.