Pdftk is a simple command line tool for doing everyday things with PDF documents. Use it to merge PDF documents, ...
Author: rubypdf
Google Adsense has a bugGoogle Adsense has a bug
the Payment History of Google Adsense has a mini bug, that show wrong result when I check “last 3 months” ...
How to sign a PDF using iText and iTextSharpHow to sign a PDF using iText and iTextSharp
If you are a Java or .NET developer, all the following articles are useful for you. How to sign a ...