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Watermarks don't even have to be visible. They could do things that survive re-encoding but are too subtle to see. For example adding a few slightly off color p
by akvadrako 5y ago
Watermarks don't even have to be visible. They could do things that survive re-encoding but are too subtle to see. For example adding a few slightly off color pixels to random letters on the page.
- jmnicolas 5y agoIn this case I think the goal is to discourage publishing the PDF since your email will be visible to all the people that downloads it. I wouldn't mind them protecting their work if it didn't harm readability and if the report was worth the money I paid (but it's another problem).