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PEM to DER Converter

Convert PEM certificates to DER format.

🛠️ How to Use
  1. Paste a PEM certificate.
  2. Optionally set a filename (default: certificate.der).
  3. Click Convert to DER and use the download link.
Example (PEM)
-----BEGIN CERTIFICATE-----\nMIIFazCCA1OgAwIBAgIR...\n-----END CERTIFICATE-----