Sometimes a problem seems hard, but the right insight can make it easy. If you were asked to write a program to compare two PDF files and show the differences, how hard do you think that would be? If ...

In order to use the desktop version, first click on the link "this page" in the "Download" section in the middle of the page ... ... Download either "HC_desktop.lzh ...

Did you know you don’t need to keep paying a pesky recurring fee for Adobe just to edit your PDFs? Yup, Adobe Acrobat’s been keeping a major secret—there’s a way to edit, merge, convert, sign, and do ...