Quote:
Originally Posted by Qxr
Correct, I meant files without OCR. Thank you for your advice - I'm currently looking for such applications. Just wondered if the reader's software offered a way to reduce/restore the number of displayed colors (by running a script or something like this).
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Not that I know of.
Technically, I think a PDF full of images can probably be extracted out into individual JPG/GIF/etc files (whatever format it uses internally). You could then use whatever paintshop type program to darken them, and then recombine into a PDF again. There are probably tools that make all of that a lot easier though, but I'm not an expert on them (obviously).