JWT (JSON Web Token) Builder

Create and sign JSON Web Tokens with various algorithms. Enter your header, payload, and signing key to generate a JWT.

Token Configuration

Signing Algorithm

Secret Key

Header (JSON)

Payload (JSON)

About JWT Builder

This tool allows you to create and sign JSON Web Tokens (JWT) with various algorithms:

HS256/384/512: HMAC with SHA-256/384/512 using a secret key
RS256/384/512: RSA Signature with SHA-256/384/512 using a private key
ES256/384/512: ECDSA with SHA-256/384/512 using a private key

For HMAC algorithms (HS), you need to provide a secret key. For RSA and ECDSA algorithms (RS/ES), this demo generates temporary key pairs for signing. In a production environment, you would use your own private keys.