Stop Wrestling with OpenSSL: Generate JWKS in Seconds via Browser 🔑

Source: Dev.to

What is this tool?

It’s a utility within devtoolkits.app that generates RSA key pairs and formats them into JWKS and PEM instantly.

Key Features

• Instant RSA Generation – Choose between 2048 or 4096 bits.
• Full JWKS Output – Includes kid, alg, and use parameters ready to be used in your /.well-known/jwks.json.
• Private Key (PEM) – Get the private key simultaneously for signing your test JWTs.
• Custom kid – Specify your Key ID to match your existing system configuration.

How to use it

1. Go to the JWKS Generator: .
2. (Optional) Set your kid or key size.
3. Click Generate Keys.
4. Copy the JWKS JSON for your public endpoint and the PEM for your signing logic.

Best for

• Local Development – Mocking OIDC providers without setting up a real IDP.
• Testing – Verifying your application’s JWT signature validation logic.
• Learning – Seeing exactly what goes into a JWKS object.

Wrap up

Security configuration shouldn’t be a bottleneck. I hope this tool saves you some terminal‑headaches!

Check it out here: .