I cannot send the notes to my students because the PDFs are too big with only less than 20 pages

Zoom recording of an hour lecture is a size of 90 MB. Maybe the quality is around 720 or 480 but considering the constant changing frame, 90mb is very minimal. And an annotation of 7 pages exported to PDF without images, is 20 MB, it is insane!!!

We, the consumer of the App Store, in order to get better quality of the app, establish stability, insure user experience, provide for the common support, promote the customer welfare, and secure the blessing of customer capitalism, do ordain and establish this Suggestion for the United Users of Goodnotes- Lck

Exported files in pdf of handwritten documents are far too big. (Could be translated in images, then re-print in pdf??, as I do when i make a photo of a text, then put in pdf..)

GoodNotes 3 had a hidden option to 'Optimise' a PDF, which could make a raster pdf much smaller and quicker to render. That function has been deletedn GoodNotes 4 - please, please bring it back.

You can do this already. Tap the grid button, then select edit and then the … button. You've then got an option to "optimize" any scanned pdfs. Note, this doesn't work with vector pdfs.