How to Use
Paste your JWT token into the input field. The header, payload, and signature are decoded and displayed instantly.
Frequently Asked Questions
What is a JWT?
JWT (JSON Web Token) is a compact, URL-safe token format used for authentication and data exchange between parties.
Is it safe to paste my JWT here?
Yes. All decoding happens in your browser. No data is sent to any server.
Does this verify the signature?
This tool decodes and displays the JWT contents but does not verify the signature. Use a backend library for verification.