If the pages in the destination PDF are shown in the wrong order, click the gray circle containing an arrow that appears over the PDF document's thumbnail, so that the arrow points to the right, and drag the thumbnails of the individual pages into the desired order.Ħ. Drag the thumbnail of one PDF document (source) over of the thumbnail of the other PDF document (destination) and release the mouse or trackpad button when the pointer shows a green circle with a plus symbol in it. This will copy all pages from the source PDF and add them to the end of the destination PDF.ĥ. If the sidebar is not showing thumbnails, choose View > Sidebar > Thumbnails.Ĥ. Verify that the sidebar is configured to show thumbnails (this the default view). If the sidebar is not showing, click the Sidebar button in the Preview window's toolbar, or choose View > Sidebar > Show Sidebar.ģ. Open the PDF documents that you want to combine in Preview.Ģ. If you drag it into the sidebar but not on top of an existing page the new file will be added as an external link – not merged into the original pdf document. NOTE: The second opened PDF file must be on top of the first opened thumbnail. Drag a second pdf file ON TOP OF the existing page thumbnail. Open the thumbnail view (Shift-Command-D).ģ. To combine two PDF files together using Preview (the standard PDF viewer in all Mac OS X):Ģ. How to Combine & Join Multiple PDF Files Free? I. This article recommends two ways to combine & join PDF files.

Free ways to combine pdf files mac