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": 1773018865 // Mar 9, 2026, 01:14:25 AM UTC,
  "exp": 1773026065 // Mar 9, 2026, 03:14:25 AM UTC
}

Signature

Algorithm: HS256
ZmFrZS1zaWduYXR1cmUtbm90LXZlcmlmaWVkLWQydTFzNWRo
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
iat1773018865 (Mar 9, 2026, 01:14:25 AM UTC)Issued At
exp1773026065 (Mar 9, 2026, 03:14:25 AM UTC)Expiration Time

Base64URL Decoder

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