I’ve read it’s fairly easy for websites to tell that you’re using one, but I’m wondering if a website I visit can see my IP address when using a VPN.
No, when you use a VPN, websites can only see the IP address of the VPN server, not your actual IP address.
Another one that is useful to see if your VPN address is the one a website see is through https://ipleaks.net. They also show if your DNS is leaking as well, which is something else to check out for.
Thank you! It returned my VPN’s IP instead of mine :).