Here are some articles relating to using Kite9 diagrams on a website.
How about embedding a diagram on your website that the user can click on and interact with? Perhaps as a navigational aid, or as part of the user interface in a web application?
While the editor will allow you to make static diagrams, it is possible to create diagrams on your website based on an XML definition. That way, the images on your web pages can stay up-to-date with any changes that you make in the diagram definition, or you could generate diagrams on-the-fly for a user query.