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Save a pdf with inverted colors? (lemmy.world)

submitted 18 hours ago by [email protected] to c/[email protected]

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Is there any way I can convert my PDF into a dark mode version without converting it into images first and invert that image and combine them, instead simply invert every element in the PDF and make it dark (preserving the original text and hyperlinks). appreciate any help!

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[–] [email protected] 16 points 16 hours ago* (last edited 14 hours ago)

I don’t remember where I got this. I jotted it down in my notes. (Sorry to whoever was the original author for not giving credit)

gs -o inverted.pdf -sDEVICE=pdfwrite -c "{1 exch sub}{1 exch sub}{1 exch sub}{1 exch sub} setcolortransfer" -f original.pdf

Edit: this might well be the original post I found: https://stackoverflow.com/a/30287097