If you need to convert any colorful PDF into a beautiful monochromatic version, Preview for Mac has you covered. With macOS’s Quartz filters available to you within Preview, any PDF or image can be easily turned into its black and white representation with a few clicks.
Learn how to compress the size of a PDF file on a Mac. By using the free Preview app that comes with every Mac, we will take a PDF document and reduce its file size in just a few clicks. This tutorial walks you through the entire compression process from start to finish.