To delete a page, choose it in the sidebar and press the Delete button. Drag another PDF or page into the sidebar to add a page. It is an easy and fast technique of organizing your PDF pages. If you're learning how to edit a PDF document on Mac, this is one of the easiest built-in tools to try. If you want to know how to edit a PDF on a Mac (https://gadgetbyte.net/how-to-edit-pdf-on-mac/), simply read this blog.