Remove Water Marks from Existing PDF

[Shiddi]

I need to be able to remove a watermark from existing PDFs we have
stored in a database. This is a legitimate requirement (rather than
trying to remove trial software watermarks) as we have > 10 million
PDFs stored with a "copy" watermark that we now want to store without
the watermark. I can remove them with Acrobat, but I haven't been able
to find a product which can do this programmatically. Can pdftorn do
this?

Thanks
Satish

[Support]

If you stamp your PDF documents with pdftron.PDF.Stamper (http://
www.pdftron.com/pdfnet/samplecode.html#Stamper) you can easily remove
them with Stamper.DeleteStamps(doc, PageSet).

If PDFs are stamped with another tool, you would need to use the
approach shown in ElementEdit (http://www.pdftron.com/pdfnet/
samplecode.html#ElementEdit) sample. This is more tricky because you
need some way of identifying what content is part of the stamp (e.g.
based on position, bbox, color? etc) and what not.

[Shiddi]

Yes,PDF's are stamped with 3rdparty Tool...
I have checked the element EDIT sample..it basically skips the images
in the PDF and creates the new PDF.
So How to find whether that IMAGE is STAMP or a Part of PDF image
i.e(GRAPH OR IMAGE).
I did not found an option..
can you provide some sample code.??
I am very new to this...


On Aug 17, 11:36 pm, Support <supp...@pdftron.com> wrote:
> If you stamp your PDF documents with pdftron.PDF.Stamper (http://www.pdftron.com/pdfnet/samplecode.html#Stamper) you can easily remove

> > Satish- Hide quoted text -
>
> - Show quoted text -

[Support]

You would need to devise some heuristics to identify stamp content (i.e. elements). For example you could use the knowledge that a stamp is the last element in the display list or that it takes specific location on the page (i.e. element.GetBBox(rect) ), etc...