You should add a loader, or at least a feedback that the processhas started. I clicked on the button 2 or 3 times before realizing that my browser was waiting for your side.

Plus, the PNG doe not perfectly reflect our site (alignment problems , ...). Input site : http://d-sight.com

Finally, clicking on our screenshot brings us to "realtywarp.com"

Other wise it's a nice tool-to-have. I would probably use it around once a month.