Decode and inspect JSON Web Tokens. View header, payload, and signature. Check expiration, validate claims, and understand your tokens.
📋 Header
📦 Payload
🔑 Signature
🔍 Claims Analysis
What is a JWT?
A JSON Web Token is a compact, URL-safe means of representing claims between two parties. It has three parts separated by dots: header (algorithm), payload (claims), and signature (verification). Common in authentication and authorization.
Common Claims iss — Issuer • sub — Subject • aud — Audience • exp — Expiration • nbf — Not Before • iat — Issued At • jti — JWT ID