As the number of positions in your organization grows beyond fifty or so, it becomes difficult to print your org chart on a single page and still be able to read the text, no matter how tightly you format it. You can print the chart on a larger sheet of paper, or on multiple sheets, but this becomes cumbersome.
The size of your chart is not a problem once it is online. You can view it at any magnification. Zoom out to view the entire chart. Zoom in to read the details. You can scroll different parts of the chart into view.