You can use WISroGIS to create custom maps and publish in your site your own high resolution images. To achieve best performance, the images are loaded using Zoomify file format.
Zoomify works by slicing an image into many pieces or 'tiles' - as in a mosaic. Zoomify performs this dicing on many versions of the image, each at a different resolution or size. The result is a pyramid of tiles (a set of folders and images) which a web site visitor can navigate within to view any part of the image at any level of zoom. Viewing is fast and interactive because each view that the visitor zooms and pans to involves the download of only a small number of image tiles, each of which is small in size (see the Zoomify FAQs page for more details).