Self-signed Certificates

I made a website for generating self-signed certificates: https://dexter.döpping.eu/self-signed/

There's a lot of bad info online about generating self-signed certificates. For instance, a lot of guides don't use the SAN list extension or they don't show how to create a proper certificate chain. Using solely CN for the domain name is deprecated and Firefox doesn't allow a CA certificate to be used as an end certificate.

Getting a working certificate can get pretty confusing, especially for newcomers to certificates or webdev.

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