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November 3, 2020 19:46
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convert color pdf to grayscale
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| jeremy@jeremy-Blade:$ gs \ | |
| -sOutputFile=output.pdf \ | |
| -sDEVICE=pdfwrite \ | |
| -sColorConversionStrategy=Gray \ | |
| -dProcessColorModel=/DeviceGray \ | |
| -dCompatibilityLevel=1.4 \ | |
| -dNOPAUSE \ | |
| -dBATCH \ | |
| input.pdf |
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