JWT Decoder

Decode JSON Web Tokens and inspect the header, payload, and signature. Token verification is not performed.

JWT Token

Header

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

Payload

{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022,
  "exp": 9999999999
}

Timestamp Claims

Issued At (iat)Thu, Jan 18, 2018, 01:30:22 AM

Expiration (exp)Sat, Nov 20, 2286, 05:46:39 PM

Not Before (nbf)-

Signature

TaPncNwQfl4xt0w5bsoCQyggQgnqlqCfw_W6ebSJtxk

About JWT

A JSON Web Token (JWT) consists of three base64url-encoded parts: header, payload, and signature. This tool decodes the first two parts and displays them as formatted JSON. It does not verify the signature. All processing is client-side.