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a rather long but cool Ghostscript command to convert a PDF to grayscale (foud in stack overflow)

gs -dQUIET -dBATCH -dNOPAUSE -r150 -sDEVICE=pdfwrite -sProcessColorModel=DeviceGray -sColorConversionStrategy=Gray -dOverrideICC -sOutputFile=output.pdf input.pdf

@mara does this not rasterize the pdf? weird that Imagemagick can't do that too!

@epilys maybe, I tried it in a text pdf, with only one small image, so I didn't see a difference. imagemagick is image-centric. But if you find an im cmd, ping me :)

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Very very small instance for feminists. Right now this instance is moderated by Gaba & Anne & Mara open to people we know or recommended. If you would like to join send an email with a short introduction to gaba at systerserver.net and hi at psaroskalazines.gr