Sometimes a PowerPoint slide or PDF file might not have enough room to write notes on, or gets too cluttered.

I like to create a new blank page and write notes on that. The issue is the fact that sometimes these additional notes do not take up the whole page so I just have a huge blank area beneath the notes.

I'd like a way to resize each individual page, if needed. That way, I can cut out all the blank, wasted space and keep my notes seamless.