JWT Decoder
Paste a JWT to see its decoded header and payload. This only decodes — it doesn't verify the signature, and nothing is sent anywhere.
About JWT Decoder
JSON Web Tokens are base64-encoded, not encrypted, so their contents are meant to be readable — this tool decodes the header and payload instantly so you can debug an auth token without writing a script. Nothing is sent to a server; the decoding happens entirely in your browser.
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