PDF Basics

Answers to frequently asked questions about the basics, for people who are new to working with PDF files.

How to Annotate PDFs

How to annotate a PDF, including how to add text to PDF files, how to type directly onto a PDF (without a typewriter, because who still has typewriters!?), and how to draw and markup PDFs. Tutorials include screenshots and step-by-step instructions for annotating PDFs.

Working With PDFs

You know what a PDF file is, but you need help that goes beyond simply opening, closing, sharing and downloading a PDF file. Explore topics that help you alter a PDF document, whether you want to rearrange pages, block out copy, markup and edit a PDF, or troubleshoot how to lock or unlock a password-protected PDF file.