This led me to summarizing my investigation here. Unfortunately, none of them served me well. There are several articles for adding a watermark into PDF (e.g. The previous articles in this series are: This article is the third one in the dedicated series to the iText library. Might PDFtk be getting outdated? I suspect not, but I don't know.The iText 7 is a powerful library for PDF manipulation. On the other hand, I find its website currently advertises full support for O/S's through Windows 8 and OS X 10.8 Mountain Lion. Having noted all this, I will also noted that PDFtk has a GUI version that purports to handle watermarks, in consideration of a $4 licensing fee. or far worse if your watermark is color-enhanced! Such fanciness can transform what the reader expects (hopes?) to be a contiguous, easily-searched-for string into a mess of alphabet soup. (Yes, both real numbers and integers may be seen.)Ī regexp like the following will work for all such watermarks, ignoring any variations in their placement: ^BT\n Td\n\(Smedley For Commissioner\)Tj\nET\nīe aware, tho, that a variety of modifying PDF operators can come into play with watermarks that have more complicated formatting. Where 75.96 is the horizontal offset and 625 the vertical offset for this particular watermark instance. The uncompressed PDF watermarks might be defined like this: BT In the simplest case where the watermark is simple, unadorned text, for example All the original data and annotations remained intact - sans the watermarks. In my case, the file size of my 3-page document shrank from 300 kb down to an impressive 60 kb. Open the new
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