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SSL Converter

Convert certificate/private/public key between PEM and DER(base64).

FAQ

What formats are supported? This converter supports PEM and DER(base64) for certificates, private keys, and public keys.

Which conversion direction should I choose? Use DER output when systems require binary/base64 DER, and PEM output when systems require BEGIN/END blocks.

What should I do after conversion? Use Certificate Decoder to verify converted certificate content and Certificate Key Matcher to confirm certificate-private key compatibility.