How to Expand Pictures

First, you will see a screen that looks like this below:

Next, click on one of the pictured pages in order to see a blow-up:

This is still not the largest size you will be able to see.  In order to blow the picture up, hover your curser over the picture, and then click on the box (with four arrows pointing out) in the lower right corner of the page.

You will now see the largest size of the document.