JWT Decoder

Paste a JWT to inspect its header and payload. Decoding only — never send real secrets to any web tool.

This only decodes the token — it never verifies the signature, and nothing you paste here leaves your browser. Never paste a real secret or private key into any web tool.

Header

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

Payload

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