The new-ish High Efficiency Image File Format has a lot of advantages over older formats but compatibility is currently not one of them.
Registering a domain name is probably the easiest step in the pipeline from cool idea to cool project. We’ve all got a few “cool idea” domains registered and sitting around, right? Assuming you actually do something with that cool domain you’ll probably pick a registrar, set up your nameservers, and forget it. You’ll rarely log back into your registrar.