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[liberationtech] Removing watermarks from pdfs (pdfparanoia)

liberationtech at liberationtech at
Tue Feb 5 15:59:03 PST 2013

On Tue, 5 Feb 2013 14:20:22 -0600
Bryan Bishop <kanzure at> wrote:

> How about removing those pesky watermarks from pdfs? Sometimes they
> completely obfuscate the contents of a paper we're trying to read, or
> sometimes they have more sinister purposes.

I get PDFs watermarked to me by their placement of sections in relation
to one another, their word choice in opening sentences of paragraphs,
and figure/image locations within the PDF. The idea being that the
content is the watermark, not some silly overlay watermark which is
fairly easily stripped out in most free operating systems.

pgp 0x6B4D6475

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