JWT Debugger

Encode, decode and verify your JSON Web Tokens in real-time.

Encoded JWT (Paste here)

Waiting for token

Header (Algorithm & Token Type)

Payload (Data & Claims)

Verify Signature

Secret Base64 encoded

Secret Key

WARNING: Never enter your production environment secrets or real user tokens into any online tool. Your data remains on your browser but caution is advised.

What is JWT?

JSON Web Token (JWT) is an open standard that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.

Token Structure

A JWT consists of three parts separated by dots: Header, Payload, and Signature.

Common Claims

sub Subject

iat Issued At

exp Expiration