Sam,
You can try and make the size of the thumbnails smaller so that is makes it easier to view them but there is not a way to have them enlarged on one page. In the Page Browser under the scroll bar there is a smaller scroll bar to adjust the size of the thumbnails.If you wanted the thumbnails a little larger then you can go into your Profiles (Edit/ Profiles) and adjust the size of the icons. There a screenshot below that should help. (case# 222629)
Thanks!