PDF files have the option to let you share and comment on documents in a wide range of applications. Adobe Acrobat Reader and other free PDF programs offer a subset of the capabilities of the paid ...

Need to make notes in a PDF, or perhaps correct a few typos or reorganize the pages? Here are the tools and tips you need. Editing PDFs is something many people need to do, but unfortunately it’s not ...

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 ...