I was also looking for a similar solution.
I tried using this peiece of code .
//create a new PdfContentEditor object
PdfContentEditor contentEditor = new PdfContentEditor();
//bind input PDF file
//get information of all the stamps on a particular page
StampInfo stampInfos = contentEditor.GetStamps(1);
//show information of all the stamps
foreach (StampInfo stampInfo in stampInfos)
//save output PDF file
It helped me remove the TextStamp successfully, but I was getting the an error "AN ERROR EXISTING ON THE PAGE. ACROBAT MAY BE DISPLAY THE PAGE PROPERLY"
Could you help on this, please.