Tool • Security
JWT Decoder
Paste a JSON Web Token to decode its header and payload. Runs entirely in your browser.
Heads up
This tool decodes JWTs but does not validate cryptographic signatures. Inspect claims, check times, and verify signatures server-side or with your own keys if needed.
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Decode JWT
Colored token preview • JSON views • Claim time insights (UTC & local).
Ready
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Expiration (exp)
UTC:
—Local:
——
No
exp claimNot Before (nbf)
UTC:
—Local:
——
No
nbf claimIssued At (iat)
UTC:
—Local:
——
No
iat claimAuth Time (auth_time)
UTC:
—Local:
—No
auth_time claim