How to Change Settings to Open a PDF File. A Portable Document File is a type of file that uses an open standard across different computer platforms and programs.

Knowing how to combine multiple PDFs into a single file is easy and can make you more productive. You don't want to inflict a half-dozen PDF files on the accounting department, for example, when ...

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.