JWT Decoder

Securely decode and parse JSON Web Tokens instantly. View header algorithms, payload claims, and verify token expiration times entirely in your browser.

Encoded Token
100% Client-Side Privacy: Your token is decoded locally in your browser. No data, payloads, or tokens are ever sent to any server.
Decoded Data
Invalid JWT format. A valid JWT must have 3 parts separated by dots (Header.Payload.Signature).
Header (Algorithm & Token Type)
Payload (Data & Claims)
Signature (Verification String)

Token Timing & Validity