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JWT Decoder
Decode and inspect JWT tokens online for free — no signature verification.
key JWT Decoder
verified_user Your files are processed locally in your browser. Nothing is uploaded to any server.
Paste any JWT token and instantly see the decoded header and payload as formatted JSON. The tool also displays human-readable issued-at, expiry, and not-before timestamps, and highlights expired tokens in red. Everything runs in your browser — your token is never sent to a server.
Frequently Asked Questions
Does this verify the JWT signature? expand_more
No. This tool only decodes the header and payload for inspection. Signature verification requires the secret or public key, which you should never share.
Is it safe to paste my JWT here? expand_more
The decoding happens entirely in your browser. Your token is never sent to any server.