Feature Request: Page Cropping / Page Trimming
I would like to have a feature that allows users to crop or trim pages to remove unnecessary areas and view documents in a cleaner format within GoodNotes.

Currently, only objects such as images can be cropped, but there is no way to crop the actual page area itself. Adding a page cropping feature would greatly improve usability, especially when working with scanned documents or PDFs that include unnecessary margins.

Page Cropping Using the Lasso Tool
(Apply to: Current Page / Selected Pages / All Pages)

Crop current page only

Keep only the area selected with the Lasso Tool and remove everything outside the selection (current page only).

Crop all pages to the same size

When all pages have the same layout and unnecessary margins are identical, keep only the Lasso-selected area and remove the rest, applying the same crop to all pages.

Erase only the Lasso-selected area (current page only)

Remove only the selected area, while preserving all other parts of the page (current page only).

Erase the same selected area across all pages

When the unnecessary area is identical in size and position across pages, remove only the Lasso-selected area while preserving the rest, applied to all pages.

Page Cropping via Page Layout (More Options / “⋯” Menu)
(Apply to: Current Page / Selected Pages / All Pages)

Crop pages by manually adjusting the crop size or by entering precise X and Y values (width/height or margins) in a dedicated input panel.

The crop settings should be applicable to:

Current page only

Selected pages

All pages in the document