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JWT Generator and Verifier

Generate JWT tokens online and verify signatures for auth debugging, API testing, and local development.

Signing Algorithm

Secret

Header

Payload

JWT Token

Decoded Header

Decoded Payload

JWT Generator and Verifier

Use this tool to create and verify JWT tokens directly in the browser for API debugging, auth testing, and local development.

Supported Features

Generate JWT tokens
Verify JWT signatures
Decode Header and Payload
Supports HS256, HS384, HS512, and none

How To Use

Choose an algorithm and enter a secret.
Edit the Header and Payload JSON.
Generate the token.
Verify the token signature against the same secret.

Common Use Cases

Test login and auth flows locally
Verify whether a backend-generated token is correct
Inspect user claims and expiration fields
Demonstrate JWT structure and signing behavior