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JSON Web Token (JWT) Decoder

Security & Encryption

Decode and inspect JSON Web Tokens (JWT) client-side to examine Header, Payload, and expiration status.

JWT Token (Encoded)
HEADER: Algorithm & Token Type
{
  "alg": "HS256",
  "typ": "JWT"
}
PAYLOAD: Data / Claims
{
  "sub": "1234567890",
  "name": "Ahmet Yelmaz",
  "admin": true,
  "iat": 1700000000,
  "exp": 2000000000
}
Son Kullanma (EXP):18.05.2033 03:33:20
Valid

How to Use JSON Web Token (JWT) Decoder

1

Paste JWT String

Paste your 3-part encoded token into the box.

2

Inspect Payload

Read decoded JSON header and payload with color-coded claims.

Privacy Guarantee:All computations, transformations, and file processing occur 100% locally in your browser via client-side JavaScript. Your sensitive data is never uploaded or logged on any remote server.

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