I think you'll need to set up another computer/monitor right next to your laptop, and then look at an uploaded image (in a browser) alongside the same image in PS on your laptop, and adjust the screen(s) to match.
You will never account for all the variation in other people's monitors/settings/calibration (or lack thereof) ... there will always be some people who see your images darker than you intend, and some lighter ... :-( |