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How to concurrently, productively change all gray color in all headings and subheadings in this PDF?
Screen shot of PDF below. Do not ask me to manually change the gray color in each heading and subheading individually — too much time and work! I hanker change to #4DFFFF — CMYK = 70, 0, 0, 0.
I am computer illiterate. I hanker simplest solution. I know no programming or computer science.
1 answer
TL;DR You can't, at least not easily.
Generally speaking, PDFs are read only documents. That is deliberate, as it helps with use of PDFs as a replacement for paper documents. What you see is what you get when you print, and what you see is almost definitely what the author wanted you to see. There are some applications that can make changes, most notably Adobe Acrobat. However, I have not seen any programs (does not mean none exist) to do the type of change you are looking to accomplish.
In general, when I have changes to make of that sort, I write a program to do it. That is unfortunately incompatible with "I know no programming". In addition, even if you did know how to use one or more common programming languages, I have found that while creating PDFs from popular programming languages (e.g., PHP, Python) is relatively straightforward, changing PDFs is often much more difficult.
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