Q: How do I copy pages from one PDF document to another?
A: You can copy pages from one PDF document to another by dragging a page’s thumbnail image from one document onto the top thumbnail in the other document.
To copy pages from one PDF document to another:
  1. Open both PDF documents in Preview.
  2. For each document window, choose Sidebar in the toolbar, and then click the Contact Sheet or Thumbnails button at the bottom of the sidebar.
  3. Drag each page’s thumbnail image from its original document to the other document.

    A rectangle encloses the other document’s thumbnails when you drag over them. If you don’t see a rectangle, the thumbnails will appear in the other document’s window, but they won’t be included in the PDF document.

The page remains in the original document and is copied to the other document.


Here's an example:

1) Open both PDF documents in Preview.
Screenshot: merge-pdf-both-1
2) For each document window, choose Sidebar in the toolbar, and then click the Contact Sheet or Thumbnails button at the bottom of the sidebar.
merge-pdf-both-2
3) Drag each page’s thumbnail image from its original document to the other document
merge-pdf-both-3
merge-pdf-both-4
Save As… your new document.
merge-pdf-save-as