Developer tool

JWT Decoder

Inspect JWT header and payload without sending the token anywhere.

How to use JWT Decoder

A JWT decoder reads a JSON Web Token and displays its header and payload in a readable format. This helps inspect token claims during development and debugging.

Basic idea

JWT parts -> Base64URL decode header and payload -> readable JSON

Does decoding verify a JWT?

No. Decoding only reads the token content. Verification requires checking the signature with the correct secret or public key.

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