Gimp is normally used to create or manipulate images files, but can also work with PDFs if you understand how it works and what it's limits are. If you’ve never used Gimp—a free image editor available ...

Preview is a catch-all file viewer, handling a variety of image formats as well as the ubiquitous portable document format, otherwise known as the PDF, which was introduced by Adobe in 1993, and was ...

Editing PDFs is something many people need to do, but unfortunately it’s not always the easiest thing to do. The format is not designed to be easily edited, and despite a plethora of Windows and web ...