PEM to JWK converter

Paste a PEM public (SPKI) or private (PKCS8) key and export a JWK. Import runs in the browser via Web Crypto.

Encrypted PEM and PKCS#1 (BEGIN RSA PRIVATE KEY) are not supported here. Convert those to unencrypted PKCS#8 first. The key never leaves this device.

Client-side only. Encrypted PEM and PKCS#1 (BEGIN RSA PRIVATE KEY) are not imported — convert those to unencrypted PKCS#8 first.