1. Open PDFs
- The first thing that you want to do is to open both PDFs that you want to combine in Preview.
2. Show the PDF thumbnails.
Click on the drop-down menu in the upper-left corner and select “Thumbnails” on each PDF.
- A tray will open on the lefthand side of Preview, showing you the individual pages of your PDFs.
3. Click and Drag the Pages
Select the thumbnails of the PDF that you want to combine from one file—use Command-A to select them all at once—and then simply drag these thumbnails pages onto the thumbnails of the other PDF. Shazam! You’re done! Simply save the file, and go about your life.
N.B. It’s important to drag the thumbnails onto the other thumbnails and not below the very thin line that appears at the end of the thumbnails. If you do the latter, you will still only have two files.
