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Old 09-02-2013, 12:27 PM   #522
willus
Fuzzball, the purple cat
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Posts: 1,303
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Join Date: Jun 2011
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Quote:
Originally Posted by mldma View Post
Sorry,my poor english let you misunderstand the question:
I want to change a scanned color Pdf to black and white Pdf (color fading into black and wihte)without change the original margin,text size . can k2pdfopt do it?
thank you
Try this:

k2pdfopt -mode copy -c- file.pdf

If you want the margins trimmed, add -t to the options. The -c- turns off color output (makes it black and white). You can adjust the grayscale some with the -g option, like Jens pointed out, and also with the contrast: -cmax option.
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