Skip to main content

Send us a Topic or Tip

Have a suggestion for the blog? Perhaps a topic you'd like us to write about? If so, we'd love to hear from you! Fancy yourself a writer and have a tech tip, handy computer trick, or "how to" to share? Let us know what you'd like to contribute!

Thanks for reaching out!

How to Merge PDFs Using macOS Preview

Ever have a need to merge multiple Portable Document Format (PDF) files into a single document? There are various third party apps that allow you to do this. However, the easiest way is with Preview, which comes with macOS.

About Preview

Preview is the macOS’s image viewer and PDF viewer. In addition to viewing and printing digital images and PDF files, it can also edit these media types.

How to merge PDF files

To combine PDF files using Preview:

° Launch Preview.

° Open the PDFs files you wish to combine.

° In each open PDF, choose View > Thumbnails to display the page thumbnails in the sidebar.

View thumbnails
View thumbnails

° Drag the thumbnails you want to add to the thumbnail sidebar in the other PDF. Command-click to select nonadjacent thumbnails.

Thumbnail sidebar
Thumbnail sidebar

You can add pages to the end of the document or between pages in a document. Drag thumbnails to reorder them. Note that to add an entire PDF to the beginning or end of another PDF, you can drag the PDF icon in the Finder to the sidebar of an open document.

Once finished, you can click and drag the pages of your PDF in the thumbnail sidebar to reorder them if needed. You can select a single page, multiple pages, or entire files and merge them in this manner

Dennis Sellers
the authorDennis Sellers
Contributing Author
Dennis has over 40 years of journalism experience and has written hundreds of articles. For the past 20-plus years, he's been an online journalist, covering mainly Apple Inc. He's written for MacCentral, MacWorld, MacMinute, Macsimum News, Apple Daily Report, and is now contributing editor at Apple World Today.
Be Sociable, Share This Post!

Leave a Reply


  • Great Tip!

    Although sometimes when I do this, Preview doesn’t merge the pages into the destination doc. In the Title Bar, the page count doesn’t change and it will say 2 Documents.

    Any idea why this happens and how to ensure it merges fully?

  • By this drag & drop method, you can easily combine pages of different sizes and orientations into a single PDF. And even more magical is that you can simply drag other files that are not PDFs into a PDF. PNG and JPEG images become new pages in the PDF instantly. For some files (such as RTF) Adobe may want to go through a little dance to convert it first.