Combine files into a PDF Desired Outcome Quickly combine multiple files into one single PDF Bring multiple photos or documents into one file Step-by-Step Guide On your Mac, click the Finder icon in the Dock to open a Finder window. Select the files you want to combine into a PDF. Note: The files appear in the PDF in the same order that you select them. Control-click the selected files, then choose Quick Actions > Create PDF. The file is created automatically with a name similar to the first file you selected.