Then click on the Thumbnail of the page you want to delete.There are 2 options to display Thumbnails: Go to View Menu, click on Thumbnails to make sure it is checked Or go to View, click on Thumbnails to make sure it is checked. Make sure the Thumbnails are displayed on the left of Preview interface.Right click on the PDF file to open with Preview.Here is how to delete pages from PDF with Mac Preview Also, it can open Microsoft Office files easily. It is not a file editor but embeds in some quite basic tools, including delete, split, merge, protect, unlock, annotate, print, crop, zoom, etc. It is the free productivity tool from macOS to manage image-based files like PDF and images. Speaking of managing PDF files on Mac, we cannot miss Preview.