Like the GIF (that's Graphics Interchange Format), the PDF (Portable Document Format) has survived and flourished through the digital age. That's partly because of its versatility: It's the go-to ...

You can convert PUB files to PDF using the Microsoft Publisher software itself or use the free online Publisher to PDF converter tool.

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.

Learn how to combine PDF files into a single file, quickly and with free software.

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.

There are a few ways you can convert a PDF to Excel, including through Microsoft Office apps and Adobe Acrobat.

LibreOffice can handle all kind of files, including PDFs you might be working on. Here's how to set up a PDF in LibreOffice and edit it.

Learn how to use tools to create, annotate, and extract text from a PDF on a Chromebook.