JWT Decoder
Paste a JWT to decode its header and payload, with exp/iat converted to readable dates.
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This tool runs locally in your browser — your content is never uploaded to a server.
How to use
- 1.Paste the full JWT (three dot-separated parts, like eyJ...) into the input box.
- 2.The header and payload decode instantly into readable JSON.
- 3.Time claims like exp / iat / nbf are converted to local readable dates, with a clear expired warning.
- 4.Click “Copy” to save the result; signatures cannot be verified locally and the tool won’t fake that.
FAQ
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