b2KIT

JWT Decoder

Decode and inspect JSON Web Tokens to view header, payload, and signature claims.

Token is valid (not expired)
Expires: Sep 21, 2030, 12:37:02 PM EDT (1659 days from now)
HEADER
{
  "alg": "HS256",
  "typ": "JWT"
}
PAYLOAD
{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022,
  "exp": 1916239022,
  "role": "admin"
}
Timestamps
Issued At (iat)
Jan 17, 2018, 08:30:22 PM EST
2971 days ago
Expiration (exp)
Sep 21, 2030, 12:37:02 PM EDT
1659 days from now
SIGNATURE
SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

Note: This tool decodes the JWT but does not verify the signature. Use a secret/public key to verify authenticity.

How to Use JWT Decoder

  1. 1

    Paste your JWT

    Enter the JSON Web Token string you want to inspect.

  2. 2

    View the payload

    See the decoded header, payload, claims, and expiration time.

  3. 3

    Verify the token

    Check if the token is expired or has valid structure.

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