The ability to work with AutoCAD documents and to combine multiple files into a single file are both very useful in professional settings. Editors' note: This is a review of the trial version of ...

Ghostscript gives you the power to combine files, convert files, and much more, all from the command line. It is easy to combine several input files into one combined PDF using Ghostscript: ...

Got a Microsoft Word doc that needs to be a PDF? A JPEG image you want to change to TIFF? Here's everything you need to know about converting file formats.

If you need a PDF editor for Mac, then you should check out UPDF as a great tool for producing and annotating documents.