ha pdf a cel akkor miert nem pdf-ben rakod be a vizjelet? a pdf tud vizjelet kezelni. Linux vagy win?
http://www.pdfhacks.com/pdftk/
background
Applies a PDF watermark to the background of a single input
PDF. Pass the background PDF's filename after background
like so:
pdftk in.pdf background back.pdf output out.pdf
mgb