About the JWT Decoder
Paste a JWT to read its header and claims, with timestamps (iat, exp, nbf) shown as dates and a clear expired / not expired status.
JWT Decoder
Decode a JSON Web Token’s header and payload and check its expiry — in your browser.
- Paste your input
- Choose the options
- Copy the output
Runs in your browser. Your data and files never leave your device.
Frequently asked questions
Does this verify the signature?
No. Decoding shows what a token says; only your server, with the key, can verify it wasn’t tampered with.
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