Lab / JWT Decoder
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JWT Decoder

Decode and inspect JSON Web Tokens. See claims, timestamps, and expiry status with live countdown.

JWT Decoderbeta
Client-only
HeaderPayloadSignature
Valid2h 0m expires in

Header

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

Payload

{
  "sub": "1234567890",
  "name": "Jane Doe",
  "email": "jane@example.com",
  "iat": 1776230657 // Apr 15, 2026, 05:24:17 AM UTC,
  "exp": 1776237857 // Apr 15, 2026, 07:24:17 AM UTC
}

Signature

Algorithm: HS256
ZmFrZS1zaWduYXR1cmUtbm90LXZlcmlmaWVkLTMzaGZyOHhl
Signature verification requires the secret key and is not performed client-side for security.

Claims (5)

ClaimValueDescription
sub1234567890Subject
nameJane DoeFull Name
emailjane@example.comEmail Address
iat1776230657 (Apr 15, 2026, 05:24:17 AM UTC)Issued At
exp1776237857 (Apr 15, 2026, 07:24:17 AM UTC)Expiration Time

Base64URL Decoder

Your token never leaves your browser. Signature verification is not performed — only decoding.