JWT Token Generator & HMAC Signer Studio
Create and sign custom JSON Web Tokens (JWT) locally with Web Crypto API. Customize header, payload claims (sub, iss, aud, exp, iat, roles), sign with your secret key using HS256, HS384, or HS512, and generate copyable Bearer authorization headers with zero server logging.
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How to Generate & Sign JWT in 3 Steps
Choose Algorithm & Secret
Select HS256, HS384, or HS512 and enter your secret signing key.
Customize Payload Claims
Edit the JSON payload, set expiration (+1h, +1d), and add custom user claims.
Copy Signed JWT
Copy the color-coded signed JWT token or the complete HTTP Authorization Bearer header.
Frequently Asked Questions
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