How to Merge PDFs on a Mac Without Adobe Acrobat

When most people first need to merge PDFs, their instinct is to download Adobe Acrobat — but Acrobat isn't cheap, and a subscription can run you a hefty monthly fee. The good news is that on a Mac, there are several ways to get this done for free, and none of them are particularly difficult.

Method 1: Use Mac's Built-In Preview App

macOS's built-in Preview app is a seriously underrated PDF tool. It's not just a viewer — it can handle basic merging tasks too.

Step-by-Step Instructions

1. Open your first PDF in Preview.
2. In the menu bar, go to View → Thumbnails to bring up the page thumbnail sidebar on the left.
3. Drag your second PDF from Finder into the thumbnail sidebar, dropping it at the bottom of the list. (Make sure you're dropping it into the thumbnail list — not the main preview area in the center.)
4. The pages from both documents will be combined. Press ⌘ + S to save.

Common Pitfalls

• If the page order is off, you can drag individual thumbnails in the sidebar to rearrange them.
• Saving with ⌘ + S will overwrite your original file. If you want to keep the originals intact, use Save As (⌘ + Shift + S) to export to a new location first.
• If nothing happens when you drag a file in from Finder, double-check that you're dropping it onto the thumbnail list — not onto the preview pane itself.

Preview's merge feature works best for 2–5 documents with a manageable number of pages. If you're dealing with 10+ files, each dozens of pages long, it gets tedious quickly. In that case, one of the other methods below will serve you better.

Method 2: Use Automator for Batch Merging (Advanced, but Free)

Mac also ships with a built-in tool called Automator, which lets you build simple automated workflows. It's a great option if you need to merge PDFs on a recurring basis.

Setting Up a PDF Merge Workflow in Automator

1. Open Automator (find it in Launchpad or search with Spotlight).
2. Choose to create a new Workflow.
3. In the action library on the left, search for "Combine PDF Pages" and drag it into the workflow area on the right.
4. Add a "Move Finder Items" action and specify where you want the output saved.
5. Save the workflow. From then on, just drag PDFs into the Automator window to run it.

The initial setup takes a bit of effort, but once it's done, it's very efficient. That said, if you only merge PDFs occasionally, the time investment to configure Automator probably isn't worth it.

Method 3: Use an Online Tool — No Installation Required

If you'd rather not touch your Mac's settings at all, using a browser-based tool is the fastest option. Our Merge PDF tool is completely free and takes just a few steps:

1. Go to the Merge PDF tool.
2. Click "Choose Files" or drag and drop multiple PDFs into the page.
3. Drag to reorder the documents as needed.
4. Click "Merge PDF", wait a few seconds, then download your combined file.

No account required, nothing to install — it works in Safari, Chrome, and Firefox. It's especially handy when you're on someone else's Mac and need to merge something on the fly, or when you simply don't want another app taking up space on your system.

When Does an Online Tool Make the Most Sense?

• You're merging documents from different sources (e.g., a signed contract, an attachment, and a cover page — each saved as a separate PDF)
• You want to move fast without manually dragging pages around in Preview
• You have a lot of pages in a complex order and want to set everything up clearly before exporting

Comparing All Three Methods

Adobe Acrobat is certainly capable of a lot — but for something as straightforward as merging PDFs, all three methods above handle it just fine, with no paid subscription needed.

What Else Can You Do After Merging?

If your merged PDF ends up being too large to email or upload, use the Compress PDF tool to reduce the file size.

If you're working with images instead of PDFs — like scanned documents or screenshots — you can use JPG to PDF to convert them first, then merge. And if you need to pull specific pages out of a PDF, the Split PDF tool lets you define exact page ranges and export them separately.

Whether you're organizing contracts, compiling reports, or combining a stack of scanned documents, just head over to the Merge PDF tool — upload, reorder, download. Done in three steps, and a whole lot easier than installing Adobe.