JWT Decoder

Decode and inspect JSON Web Tokens (JWT) instantly. View the header, payload, and signature of any JWT. See claims like expiration time, issuer, and custom data. This tool does NOT validate signatures—it only decodes for inspection.

JWT Decoder

Enter JWT Token

Security Notice: This tool does NOT validate JWT signatures. Never trust a decoded JWT without server-side signature verification.

Frequently Asked Questions

This tool runs entirely in your browser. No data is sent to any server.