Additional Space for Notes Next to PDFs

I’m a philosophy student in Germany, and I use GoodNotes to read and annotate PDFs, scrolling vertically through the pages. One feature I’ve always wished for is the ability to add extra space to the left and/or right side of the page.

This would be a real game-changer for me. Currently, I often have to squeeze small notes into the margins of my documents, which feels cluttered. Having expandable note-taking areas next to the PDF would make annotating much more comfortable.