To delete a blank page in your PDF, select it in Preview, then click Remove. You can now close Preview. 2. To delete a page, select it, then click Remove. You can now close Preview. How to Merge PDFs into One (macOS Extended, macOS Sierra Included) — PDF March 2022 — For more information on adding blank pages in PDF files, see “How to Add, Delete, and Merge PDF Files” above. Create and print multiple PDF files — Create or change a document, then open a newly created file; it will automatically open in PDF view on your Mac. Create and print multiple PDF documents from one document in a single step. Open multiple PDF files directly from Preview — Preview lets you load the file from within your document. The document is then shown in Preview, and can be accessed in Preview.