How to Combine Multiple PDFs for Free Learn how to combine PDFs into one main file on both Windows and Mac devices.

How to combine Multiple PDFs into one PDF Unlike MacOS users, who have a utility for this purpose built into their OS, Windows users must use third-party apps.

To combine two PDFs: Open one of the PDFs in Preview. Go to View > Thumbnails to see a sidebar with page thumbnails. Select the thumbnail where you want to insert the other file.

1] Use Windows inbuilt Print feature to combine multiple images into a PDF You can combine multiple images into one PDF file using the native Print feature in Windows 11/10.

To combine two PDFs: Open one of the PDFs in Preview. Go to View > Thumbnails to see a sidebar with page thumbnails. Select the thumbnail where you want to insert the other file.