PEM Inspector

Paste a PEM block (a -----BEGIN …----- / -----END …----- Base64 envelope) — a certificate, public or private key, CSR, or any other armored blob — and decode it: identify the PEM type from the header, show the raw DER bytes as a hex dump, compute its SHA-256 fingerprint, and walk the top-level ASN.1 structure to label OIDs and key types. Everything runs locally; the PEM content never leaves your browser.