Zase
Add to Chrome

JWT Signer

Sign JSON Web Tokens locally (HS256, HS384, HS512). Runs 100% in your browser: nothing you type or paste is uploaded, tracked, or sent to a server.

Also available in the Chrome extension Every Zase tool also lives in the free Developer Toolkit by Zase extension: fully offline, in a window or the side panel, one keyboard shortcut away.

Add to Chrome

Related tools

AES Encrypt / Decrypt Encrypt text with a password (AES-256-GCM), decrypt it back. Hash Generator MD5, SHA-1, SHA-2 hashes + HMAC, for text and files. JWT Decoder Decode JWT header and payload locally.