JWT Decoder
Paste a token to see its header and payload as formatted JSON, with registered time claims shown as human dates. Nothing is sent anywhere, and the signature is deliberately not checked.
Signature is not verified
Header
Payload
How to use
Read a JSON Web Token's header and claims — signature not verified. Your data is processed only inside this browser tab.
FAQ
Does it verify the signature?
No. Verification requires the issuer's secret or public key, which a browser does not have. You get the decoded contents only.
Is it safe to paste a real token?
The page makes no requests at all. Still, treat any token as a secret you would not paste into a site you do not trust.
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