JWT Decoder

Paste a JSON Web Token to decode and inspect its header, payload, and signature.

Token

Encoded Token

Header Payload Signature

Error:

Header

HEADER

Payload

PAYLOAD

Claims

Signature

SIGNATURE

Signature verification requires the secret key or public key and cannot be performed client-side. This tool decodes the token contents only. To verify the signature, use the appropriate key with your server-side JWT library.