I would like to be able to generate either a single image (jpeg, png, gif) containing the whole schema, or page images. This would be really useful when publishing schema on a website for review.

The perfect solution would be where dbForge Studio for MySQL could arrange for a mime type for their dbd file, and develop browser plugins to view the dbd (like the adobe pdf reader can read pdf's), which would allow pan and zoom to make reviewing larger schema easier.