How can you invert the colors of a PDF?
Fresh3 days ago
Mar 15, 202670553 viewsConfidence Score0%
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Problem
I need to invert all the colors of a PDF document (background, text, graphics, and images). I want it persistent in the file so the inverted viewing options, that some viewers offer, won't help. Rasterizing the document and using image manipulation software is also not an option. I read somewhere t…
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Fix for: How can you invert the colors of a PDF?
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I rigged together a Ruby script (using Inkscape and ImageMagick as subroutines) pdfinvert. It proceeds as follows: Split PDF into individual pages. Convert each page to SVG. Invert colors¹ in the SVG; embedded PNG images are taken care of². Reconver…
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