JWT Validator

Enter a JSON Web Token (HS256) and a secret key to verify its signature.

JWT Token

What is the JWT Validator?

Enter a JSON Web Token (HS256) and a secret key to verify its signature.

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Frequently Asked Questions

What is a JSON Web Token (JWT)?

A JWT is an open standard that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.

Can I read a JWT without a secret key?

Yes, the payload of a JWT is simply Base64URL encoded, meaning anyone can decode and read it. The secret key is only required to verify the signature.