I presume that by 'name' you mean the human readable description of the profile space, the OutputConditionIdentifier. Yes we could add to the already massively confusing and incredibly long list of Ghostscript command line options, but since there is already a mechanism for performing these tasks, using PostScript the pdfmark operator we choose to use that for most of the configuration.
The parts which cannot be dealt with that way are defined as command line paramteres -dPDFA for example. Programming in PostScript is also considerably more flexible than command line parameters.
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Please contact [email protected] to delete if infringement. Home Java Dev. This does not work with scanned pdfs. I'd suggest using k2pdfopt -mode copy for that. I've also written a varient with -dev dx after each k2pdfopt -mode copy, and with different output file names, for a grayscale output optimized for the Kindle Dx. By default K2 increases contrast, so if you prefer not to, that's another tweak.
It requires Ghostscript, Cpdf, K2pdfopt, and Qpdf. Cpdf should be free for non-commercial use, but I'd still prefer an open source alternative to it, and it's no longer available via Homebrew. Each app seems to have slightly inconsistent standards for standard output and standard input.
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In the end, I instructed each one to export a set filename to a "Splice" folder, or import a set filename from there. I've been able to run the whole sequence that way, first splitting, then processing, and then splicing the pdf back together.
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Last edited by MarjaE; at PM. If anyone with more programming experience wants to rework this, feel free. A platform-independent and cpdf-independent version would be useful. Originally Posted by MarjaE.
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Thank you! I'm having some trouble with the broken tables of contents and with broken scaling.
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A quick test shows that k2pdfopt -mode copy -n -toc- can cut the table of contents, but not correct the scaling. A Quartz filter can cut and correct, but it's platform-specific and doubles up the text. MuTool Clean can't cut or correct these. Printing to a new pdf should have much the same effect as running through a Quartz filter. Also running Mutool clean -d -s -z at the end of the process scrambles some text by writing one line over another.
But -g -g -g doesn't seem to cause trouble. Surge Surge 94 1 1 silver badge 2 2 bronze badges. Other than that: Great answer — thank you. It did not work for me with gs 9. It's not ghostscript, but with imagemagick this is quite simple: convert -monochrome input.
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The resulting pdf quality is much much worse than original. This seems to do halftoning; I want all colors but white to be converted to black, regardless of darkness. Yancey Oct 11 '18 at I am not sure if the following suggestion will work Kurt Pfeifle Kurt Pfeifle I tried this and was still left with shades of gray. I found pdf2ps incredibly slower than a conversion with gs. Ed L Ed L 5 5 bronze badges. Note: Recent versions of ghostscript do no longer include the now-deprecated pswriter and variants like psmono : ghostscript.
Tarun Kumar Tarun Kumar 19 3 3 bronze badges. This is why I convert to grayscale PostScript first: gs -o gray.
This is what I came up with: gs -o thresholded. Hermann Hermann 1 1 silver badge 8 8 bronze badges. Ghostscript 9.
Re the issue with psmono device, see Hermann's note in the other answer superuser. I had to modify the solution suggested by Surge above a little bit for my file: Step 1: Convert the coloured. Thus 0 0 0 is passed to the operator osetrgbcolor custom defined earlier PS1: The above code was implemented in windows command prompt PS2: I was a total stranger to Postscript coding. Does not work with gs 9.
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