I just wanted to announce that I have created a small tool called MapsTiler to make large images (mainly focused on maps) easier to handle with iSilo. The tool takes an image and tiles it creating html files, so that you can zoom any of the pieces. You can then convert the resulting set of html files into iSilo and you will be able to navigate through the image much faster than directly converting to iSilo the original image.
Please, try it and give me your feedback. More information at my page .