Does this verify JWT signatures?

This tool decodes and displays claims. Signature verification depends on your keys and is separate from viewing payload data.

Is JWT decoding private?

Yes. Tokens are decoded in your browser.

Yes. You can still inspect claims even if the token is expired.

Decode JWT tokens in your browser to inspect header and payload claims. Free private JWT decoder for developers.

Runs in your browser. Files stay on this device.

Signature is shown raw — not verified

Paste a token (Bearer prefix is stripped)

Token decoded · exp 2100-01-01T00:00:00.000Z

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

{
  "sub": "1234567890",
  "name": "Korisa",
  "iat": 1516239022,
  "exp": 4102444800
}

iat 2018-01-18T01:30:22.000Z

signature