JWT tools

Decode and generate HS* JWTs locally with Web Crypto. LocalKit does not upload tokens for processing.

• JWT Decoder — Decode JWT header and payload without sending tokens away.
• JWT Generator — Create HS256/HS384/HS512 JWTs with Web Crypto in LocalKit. Signing stays on-device; pair with the JWT decoder.
• Base64 Encode / Decode — Encode or decode Base64 text locally.
• Hash Generator — MD5, SHA-1, SHA-256 and more — computed locally.

All listed tools run in your browser. LocalKit does not upload content for computation.