The DocHub editor lets you quickly Make one PDF in Preview. It’s easy to grasp and requires no previous experience with similar editing solutions. Simply add your file, and DocHub will take care of the rest, giving you things like:
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To combine multiple PDFs into one document on your Mac, open the PDFs you want to merge, select all pages, go to the file menu, choose print, select "save as PDF", name the new file, specify the location to save it, add any additional info if needed, and click save. This will combine all pages into a single PDF.