You can retrieve any http document on the Internet. For example you could retrieve "http://www.ni.com/images/legal/us/nilogo1.gif" which is LabVIEW image from the NI Website. When you download a web page with this tool, you only get the html document, because that is what you asked for. This document embeds images, which most web browsers will download automatically and place within the formatted page. What you will need to do is retrieve the html document, parse it for all embedded image files and then download them one at a time. This is sort of what a "web spider"/"web crawler"/"web bot" does, except they mostly just parse out other pages and then visit those sites collecting information of interest.
Best of Luck - Jim