jwt

JWT Generator

Create HS256, HS384, HS512, or RS256 JSON Web Tokens in your browser. Secrets and private keys never leave the page.

Header JSON
Payload JSON
Secret
Signed token

What this JWT generator does

Create signed JSON Web Tokens locally with HMAC algorithms or an RSA private key. No secret, payload, or key is uploaded.

Security note

This tool is for development and debugging. Never paste production secrets or private keys into a shared computer or untrusted page.

Updated 2026-08-07 · Runs in your browser — your data never leaves this page.