How to Perform Color Correction in PDF File?
I have a couple of pdf files which need to be corrected. I need to change the colors of each of the files to make it more readable for my readers. I want to change not only the background color but also the text color and even the line color. Do you know any software which has the ability to change the colors? Can you provide a tutorial on how to perform color correction in pdf file? Any information would be a great help.