What is a JSON Web Token (JWT)?
JSON Web Tokens are an open, industry standard (RFC 7519) method for representing claims securely between two parties. They are widely used for authentication and authorization in modern web applications.
100% Client-Side Privacy
Your JWT often contains sensitive information about your users. WhiteArray decodes your JWT entirely in your browser. Your token is never sent to a server.
How it works
A JWT consists of three parts separated by dots (`.`): Header, Payload, and Signature. Our tool extracts the Base64Url encoded Header and Payload, decodes them, and formats them into readable JSON so you can inspect the contents.