How can I programmatically detect color PDF files versus black and white PDF files?
by Conor | June 24, 2013
One method is to render each page to an image file and then check each pixel for RGB values not equal to each other. If R=G=B for each pixel then it’s a grayscale image. This should allow you to determine if a PDF file is color or black and white. There isn’t a document wide […]
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