JWT Decoder

Decode and inspect JSON Web Tokens. Pretty-prints header and payload, and surfaces standard claims like exp / iat / sub.

Token

Header

{
  "alg": "HS256",
  "typ": "JWT"
}

Payload

{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022
}

Signature

SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

Standard Claims

sub (Subject) 1234567890

iat (Issued At) 1/18/2018, 1:30:22 AM

This tool only decodes the token — it does NOT verify the signature. Never trust unverified JWT contents in production.