Free · Make a public and private key pair

JWK Key Pair Generator

Generate an RS256 or ES256 JWK pair and a stable key ID in your browser.

  • Real jose checks
  • Private in your browser
  • Copy or download the result

Generate key pair

Make a fresh key with Web Crypto. Nothing is sent away.

1Choose the key
2Check the result
Your checked result will appear hereTry the safe sample if you do not have test data.
Private by design. Keys, secrets, claims, and messages never leave this tab. Do not paste a production private key on a shared device.

Three simple steps

How to use it

  1. Choose RSA or EC.
  2. Generate the pair on this device.
  3. Save the private key somewhere secure.

Your keys stay on this device

jose and Web Crypto do the work inside this browser tab. Bookify does not upload or save keys, secrets, tokens, or messages. A valid signature proves the input matches the key, but you must still trust where that key came from.