Security Tools

JWT Generator & Builder

Build and sign JSON Web Tokens visually — configure headers, set claims, pick expiration dates, and sign with HMAC. Client-side only, no data sent anywhere.

Algorithm

Issuer iss

Subject sub

Audience aud

Expiration exp

Issued At (iat) now

Not Before (nbf) now

Values are auto-parsed: numbers, booleans, arrays, and objects are detected. Strings remain as-is.

Secret Key

All signing happens locally in your browser via the Web Crypto API. No keys or tokens are transmitted.

Configure claims and click Generate Token

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