Open source self-host instructions here

JWK Inspector

Upload a JWK to parse for validity and extract cryptographic keys in PEM encoded ASN.1 DER format for PKCS #8 or PKIX.

Inspect a JWK

Paste a JWK to inspect it. Validity status and cryptographic keys will be returned in PEM format.
Do not upload a JWK with private key material unless this website is self-hosted.