If you uncheck “download images,” HyperImage won’t save any images, for example if you only want to save pages. If you don't save images or pages, HyperImage will crawl a website but it won’t download anything.
You can choose to only download images in the same folder, on the same server, or in the same domain as the starting address. For example, if the starting address is http://www.apple.com/imac/ and you choose images in the same folder, it will only download images in the folder /imac/. If you choose images on the same server, it will only download images from www.apple.com. If you choose images in the same domain, it will also download images from servers like images.apple.com, which is a good idea because that's where all the images are in this case.
You can choose to include or exclude images whose addresses contain certain words. For example, if you exclude the worlds small and thumbnail, HyperImage will skip over small thumbnail images that are so-named. Or if you include the words imac and ipod, it will only download images that include those words in the address.
You can also choose to include or exclude images with certain file extensions. For example, GIF files are used more often for undesirable navigation elements than for photographic content. You can include the extensions jpg and png, or exclude the extension gif as you like.
You can choose to only downloaded images that are larger (or smaller) than a given number of kilobytes. For example, pictures that are smaller than 20 KB are probably not very interesting to look at. HyperImage will ask the server how large each image is before downloading it.
Alternatively, you can choose to only download images that are larger (or smaller) than a given number of pixels (in at least one dimension). For example, pictures that are smaller than 100 pixels may not be what you're looking for either. In this case, HyperImage will download the image and then throw it away if it's too small.
You can choose to show images as they are downloaded. You can also toggle this option in the View menu. If you are browsing by thumbnail or list, the image will be selected. If you are in slideshow view, HyperImage will display the image. You can even do a fullscreen slideshow of images as they are downloaded.
Here are good settings to use if you are getting too few or too many images.