Developer ToolsEncoders & DecodersFree Tool
JWT Decoder
Decode a JWT header and payload to readable JSON — a pure decode with no expiry or signature checking.
How to Use JWT Decoder
- 1Paste your JWT (header.payload.signature)
- 2Click Process
- 3View the decoded header and payload JSON
Frequently Asked Questions
The base64url-decoded header and payload, parsed as JSON and pretty-printed — exactly what's encoded in the token, nothing more.
No — this is a pure decoder with no expiry or signature checks. Use the JWT Validator tool instead if you want an expiry check (it still doesn't verify the signature either, since that requires the secret key).
No — no tool on this site can verify a JWT signature, since that requires the private/secret key used to sign it, which only the issuing server has.
No — decoding happens entirely in your browser; the token is never transmitted.
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