I created a one page flow-chart with draw.io and printed it.
After opening it again to create a new version, it opened to what I thought was a blank page. There was now page after page of blank canvas, with the project in the lower right corner.
I tried to go to Document Properties → Custom but that didn't remove the blank pages. There is no obvious way to remove them. The structure chart content is neatly within the one page, so I don't see why it would automatically add more.
The main problem is that I can't print or save because the file is so large my laptop freezes or otherwise stalls when trying to print or save as a pdf.
How can I remove these blank pages?