Security File Converters

8 security conversions, processed server-side. Free and unlimited for files up to 5 MB, no account required, and files are deleted immediately after conversion.

• Convert PEM to DER— Convert a PEM certificate or key to binary DER format
• Convert DER to PEM— Convert a binary DER certificate to base64-encoded PEM format
• Convert CER to PEM— Convert a .cer certificate (DER or PEM encoded) to a PEM file
• Convert CRT to PEM— Convert a .crt certificate (DER or PEM encoded) to a PEM file
• Convert JWT to JSON (decode)— Decode a JWT token and extract the header and payload as JSON — no verification, client-safe
• Convert X.509 certificate to JSON— Decode an X.509 certificate (PEM or DER) and extract fields as JSON
• Convert SSH public key to JSON— Parse an SSH public key and extract its type, fingerprint, and key info as JSON
• Convert CSR to JSON— Decode a PEM certificate signing request (CSR) and extract subject and metadata as JSON