JWT Decoder

JWT Token

Header

Payload

Verify Signature (HS256)

JWT Debugger

JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.

  1. Paste your JWT string in the input field.
  2. View the decoded Header and Payload.
  3. To verify the signature (HS256), enter your secret key.
  4. Check the verification result.

FAQ

What is a JWT?

A JWT is a token that consists of three parts: Header, Payload, and Signature, separated by dots.

Is JWT secure?

JWTs are signed, meaning their integrity can be verified. However, the information within the payload is only Base64Url encoded, not encrypted, so it can be read by anyone.