The images shown here were added to this Custom Page using the Picture User Item. The Picture User Item supports a variety of options for including images on Custom Pages. You can include multiple images on a page, you can specify a caption, and you can resize the image using a variety of thumbnail options.
In this example, the Picture User Item uses the "Thumbnail link to page" option to insert a down-sized version of the image on this page. You can click on the picture to open a page that shows the full-size version of the same image.