vCrd.co has many ways you can link to your vCard.
Let's say that you have created your new vCard from withn our control panel, and the public view URL of your vCard is http://vcrd.co/example/34. All of the other URLs are built directly off of that one, so for instance:
- Web View:
http://vcrd.co/example/34/ - Download:
http://vcrd.co/example/34/d - QR:
http://vcrd.co/example/34/qr