High Sierra Merge PDFs

Combine PDFs

Combine all or part of two or more PDFs into a single PDF.

WARNING: Changes you make to a Preview document are saved automatically. If you want to keep the original PDFs (in addition to the new combined one), choose File > Duplicate to create a copy of each PDF before combining them.

  1. Open the PDFs you want to combine.
  2. In each open PDF, choose View > Thumbnails to display the page thumbnails in the sidebar.
  3. Drag the thumbnails you want to add (Command-click to select nonadjacent pages) to the thumbnail sidebar in the other PDF.

You can add pages to the end of the document or between pages in a document. Drag thumbnails to reorder them.

Tip: To add an entire PDF to the beginning or end of another PDF, drag the PDF icon in the Finder to the sidebar of an open document.