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Certificate format converter

Convert a certificate between PEM and DER, extract a PFX bundle, or create a PFX bundle from PEM certificates and a private key. Processing runs on this server without application storage. Private-key and passphrase inputs are cleared after submission.

Convert or extract a certificate

The browser encodes the file into the submitted form. The application does not save it.

Create a PFX bundle

Combine a PEM certificate with its matching private key and optional CA chain. Encrypted input keys are supported. An output PFX passphrase is recommended.