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.

All those PDF files mean that there are also countless different PDF editors and other PDF-centric tools out there.

You can reduce PDF size on a Mac with the Preview app or a third-party compressor. Reducing PDF file size on your Mac computer can help save storage space. Third-party options may cost money ...