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 ...

I recently had need again to compare two different versions of a PDF (text) file. I used a trialware tool a while back that worked for me, but I can't recall what it is. So I Googled and found ...

PDF is the de facto standard for electronic document sharing or distribution. There are many PDF utilities to choose from when you want to create, edit, and view PDF documents, but here's a look at ...

Disclosure: Our goal is to feature products and services that we think you'll find interesting and useful. If you purchase them, Entrepreneur may get a small share of the revenue from the sale from ...