How you scale or resize the PDF depends on whether it's a single page or not. Single pages can usually be scaled just as you would an image. Multipage PDFs can be more troublesome.

Finding it difficult to store or share large PDFs on your Mac? Check out a few easy ways to reduce PDF file size on a Mac to make it easier to work with.

Liquid Mode, which is now built into its Acrobat Reader software, uses an algorithm to resize PDFs to fit whatever device you’re reading on, and allows font resizing and search.