I need to remove some stupid email watermark that expands across all pages of a public domain book. I looked at pdftk man page and some examples but still can not figure out how to remove the watermarks. I appreciate your hints.
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very simply task to perform:
but, after, be sure to repair resulting output pdf
all into one command:
text watermarks are nothing else than a text between two tags inside the pdf compressed code
Just a little add-on to Dingo's answer as it did not work for me:
I had to first uncompress the pdf document in order to be able to find the watermark and replace it with sed. The first step involves uncompressing the pdf document with pdftk:
now, the input.pdf can be used as in Dingo's answer:
I then repaired and recompressed the document