JWT Decoder
Paste a JSON Web Token (JWT) to instantly decode its header and payload. Processed entirely in your browser.
Header
Payload
Signature
Frequently Asked Questions about JWT Decoder
What is a JWT (JSON Web Token)?
JWT is a compact, URL-safe means of representing claims to be transferred between two parties. It consists of three parts separated by dots: Header, Payload, and Signature.
Is it safe to paste confidential tokens here?
Yes. The tool runs entirely client-side using JavaScript. Your token is never sent or stored on any server.