Merging PDF files into a single document is easy and can be done for free using built-in operating system tools or trusted third-party applications on both Windows and Mac.
Depending on your operating system and your preference for offline vs. online processing, follow the step-by-step tutorials below to combine your documents. Method 1: Using Built-in Tools (No Software to Download) For Mac Users (Using Finder Quick Actions)
Mac computers have an incredibly fast, built-in feature to merge PDFs directly from the desktop or folder view: Open Finder and locate the PDF files you want to combine.
Select the files by holding down the Command (⌘) key and clicking on each document. Note: The order in which you select the files dictates their sequence in the final document.
Right-click (or two-finger click) on one of the selected files to open the context menu. Hover over Quick Actions and select Create PDF.
A new, merged PDF will immediately appear in the same folder. For Mac Users (Using Preview for Page-Level Control)
If you need to rearrange pages, delete specific pages, or merge separate pages from different documents, use the native Apple Support Preview App Guide: Open the first PDF in the default Preview app.
Click the View menu at the top of the screen and select Thumbnails to open the left sidebar.
Drag and drop the secondary PDF file directly into the thumbnail sidebar where you want it inserted.
Rearrange pages by dragging their individual thumbnails up or down. Delete unwanted pages by clicking a thumbnail and pressing Delete.
Click File > Export as PDF to name and save your newly combined document.
Method 2: Using Free Cross-Platform Desktop Apps (Windows & Mac)
If you are on Windows (which lacks a built-in desktop merger tool) or want a uniform interface across both systems, free software like PDFgear or PDFsam offers seamless offline combining.
Download and open your chosen app (e.g., download from the official PDFgear Platform).
Select the Merge PDF or Merge & Split module from the dashboard.
Click Add Files (or drag and drop your PDFs into the main window).
Organize your documents by using the Move Up or Move Down buttons to change their chronological order.
Click the Merge or Run button, choose an output folder, and save your file. Method 3: Using Free Online Tools (Any Device) How To Merge PDF Files On Your Mac
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