</>DevTools

JWTJWT Decoder

Decode and inspect JWT tokens

What is JWT Decoder?

JWT (JSON Web Token) is a widely used token format for authentication and information exchange. It consists of three parts — Header, Payload, and Signature — each encoded in Base64URL. This tool lets you instantly decode a JWT to inspect the header and payload contents. It is an essential task for debugging login sessions, checking expiration times (exp), and inspecting claims in both backend and frontend development.

How to Use

  1. Paste the full JWT token (the string starting with eyJ...) into the input field.
  2. Click the Decode button to split and display the Header and Payload as formatted JSON.
  3. Unix timestamp fields such as exp and iat are automatically converted to human-readable ISO date strings.