Extract pages from a PDF in Apple Preview

Open your PDF document in Apple Preview. If the sidebar isn’t showing, choose View > Sidebar > Show Sidebar or press CMD-SHIFT-D. Make sure it’s showing thumbnails (choose View > Sidebar > Thumbnails).

If you want to create a separate PDF from one of the pages, drag the thumbnail to your desktop. To create a separate PDF of multiple pages, hold down command and select the pages, then drag them to your desktop.