JWT Encoder / Signer

Create and sign custom JSON Web Tokens (JWT) using HS256 directly in your browser.

Header (JSON)Payload (JSON)

Verify Signature (Secret)

For testing only. Never expose production secrets. This tool runs 100% client-side, but standard security practices still apply.

Generated Token

Configure header/payload and click sign to generate...

JSON Web Token Generator

Need to mock an authentication token for local testing? Our JWT Encoder allows you to rapidly generate valid HS256 signed JSON Web Tokens directly in your browser. Customize your own payloads, timestamps, and roles to test your application's authorization logic safely.