Combine PDFs into one document on Windows and Mac for free. Here's how

Working with PDFs can be tricky, especially if you're trying to merge multiple documents together. Maybe you're constructing a portfolio, or maybe you just want to reduce file clutter. Whatever the reason, it can be confusing to keep lots of documents straight, but it's also tricky to figure out how to bring them together.

One of the most popular tools for combining PDFs is Adobe Acrobat, but that software will cost you at least $13 a month for a subscription. Luckily, there are a few other ways you can combine PDFs for free, no matter what type of computer you're using.

Here's how to combine multiple PDFs for free, whether you're working on a Windows device or a Mac. (We've also got tricks for how to easily sign PDFs, and four free apps for better PDF editing.)

How to combine PDFs on Windows

If you're using Windows, you'll need a third-party app to help you combine PDFs. We tested a few, and found a solid option in PDF Merger & Splitter by AnywaySoft. It's available through the Microsoft Store for free.

Here's how to merge PDFs with this app:

If you want to customize your merger a bit more, such as by changing the order of pages or only adding in certain parts of each PDF, you'll have to split them first. To do that, select Split when the app opens. Choose which individual pages or page ranges you want to pull out. You can save them as one PDF, or as individual PDFs.

How to combine PDFs on Mac

On Mac, you can combine PDFs with a built-in tool found in Preview, according to Apple Support.

Here's how to combine two PDFs:

And here's how to combine parts of one PDF with another PDF:

You can rotate, delete and reorder pages from the thumbnail section, too.

Now that you've mastered combining all of your PDFs, make sure to check out other hidden Mac tips and secret Windows 10 tips, and how to download Windows 10 and Microsoft Office apps for free.