Exporting a client certificate on macOS
Safari and Chrome on uses the infrastructure present in the OS X operating system for certificate storage and retrieval, so in order to export a certificate you need to use the Keychain Access interface to manipulate and export certificates.
- Launch Keychain Access, select the certificate to export.
- In the context menu, select Export.
- Enter a name for the certificate file and select a location for it. Ensure that the File Format is Personal Information Exchange (.p12).
- Enter and remember a password to protect the file with, you'll need this to access it later.