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There should be many online tools to test images (or screenshot of pdf) and simulate how they look for various colour blindness impairments. With a quick google search I found this: https://www.color-blindness.com/coblis-color-blindness-simulator/ There may be different conversions from rgb to grayscale but the differences are minimal. If you take a light ...


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You can do this: Find a common part of the image. Make measures, in my case I've picked the height in pixels. The right dimension image part has 50px height, the wrong one has 70px height. I just divided the right height by the wrong one then multiplied by 100. This way I found the right percentage I must reduce the wrong image. Now I can scale it using that ...


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