I have a PDF with 4 pages. I want to create another PDF where the pages are positioned one after the another (Vertical aligment) in a single page. Which commandline tool can be used for that?

I have several A4 PDF documents which I would like (two into one) "glue" together into A3 format PDF document. So I will get from 2PDFs A4 a single one sided PDF A3. I have found the excellent util...

I need to programmatically embed an existing PDF (a small graphic) onto a specfic page on an existing PDF. Using iTextSharp I've been able to add a new page containing this embedded PDF, but what n...