jwt decoder

Decode JWT header and payload locally in your browser

Inspect JWT tokens without sending them to a server. The header and payload are decoded client-side so you can read claims quickly.

This tool decodes the token only. It does not verify the signature.

JWT token

Review the header, payload, and common claim timestamps like exp and iat.

Signature verification is not performed on this page.

Header

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

Payload

{
  "sub": "1234567890",
  "name": "DartShell",
  "iat": 1712457600,
  "exp": 1712461200
}

Claim summary

exp: 4/7/2024, 11:40:00 AM

iat: 4/7/2024, 10:40:00 AM

DartShell complements browser-side helpers with SSH access, file transfer, and database workflows on Mac.

Check fields like sub, aud, iss, exp, or custom claims without opening a separate API tool.

Decoding happens in the browser, which is better suited for quick inspection of internal or temporary tokens.

This page is for inspection only, so you can review structure and timestamps without implying trust.

Paste a token and read its exp claim as both JSON and a local timestamp.

Decode payload fields like role, tenant, scope, or user metadata.