X.509 Certificate Tool

Generate self-signed certificates or convert Base64 strings into downloadable files. We do not save or log any certificates.

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Create a self-signed certificate

Fill in the fields and generate a self-signed certificate as a .pfx file. The download starts automatically once the certificate is ready.

Leave blank to skip password protection.

Convert a Base64 certificate to file

Paste a Base64-encoded certificate string to convert it to a .cer file. The generated certificate downloads automatically.