You can delete pages from a PDF on a Mac using the Preview app. You can also add pages to a PDF in two ways with Preview.

Insert Page Numbers in a PDF If you're using Adobe Acrobat to edit a PDF file, you can add page numbers in your preferred style to some or all of the document.

You can edit a PDF on your Mac with Preview, an app that's built-in to your computer from the start. You can use this program to edit photos, too.

With Adobe Acrobat Reader and Adobe’s online PDF editor, you can add comments, fill out forms, insert text, and even sign documents – all for free.

In iOS, Apple's stock Files app is a handy place for keeping PDF documents on your iPhone or iPad. Not only can you view and organize your ...