No matter your operating system, knowing how to combine PDF files is a good skill. We'll teach you the best ways to do so for Windows, macOS, or via the web.

It's handy to know how to combine PDF files. Because PDFs can be opened by any computer with a browser, they’re ideal for sharing. But it's more convenient to merge lots of PDFs into one, rather ...

If you need to edit PDF on iPhone in a hurry, you can do so without having to install any new app. Just use the native Files app. Let's show you how.

Once you’ve selected a tool, the next step is to upload your PDF files. Many online tools allow you to either drag and drop ...