https://man.liquidfiles.com
LiquidFiles Documentation

A wildcard certificate is a certificate that is valid for an entire domain as opposed to a single host or URL.

What determines what the Certificate is valid for is the Common Name (CN) attribute. If your URL is https://liquidfiles.company.com you would have a standard/single host Certificate with:

CN=liquidfiles.company.com

Or if you have a wildcard certificate, the Common Name (CN) attribute would be:

CN=*.company.com

LiquidFiles doesn't really care about what type of certificate you upload as long as the Certificate matches the Private Key so feel free to use a wildcard certificate instead of a standard/single host certificate if you wish.