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Convert darkness to transparency plug-in?


Uesserukun

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Hello Paint.NET forum members,

I'm looking for a plug-in that can convert every pixel in a picture to alpha based on how white or black it is. I plan to use it on black-and-white pictures, but if possible, I appreciate it being usable on colored pictures too. Does anybody know of a plug-in that can do this? Thanks!

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Effects>Color>Make Transparent  may be useful. It replaces a selected color (which includes black or white) with transparency, so that the image will look the same if placed above a background layer of the selected color. I believe when used with black or white as the selected color it gives the same result as BoltBait's Switch Gray to Alpha, so either would work well. Switch Gray to Alpha is easier to use for making black and white transparent; Make Transparent works with color, also.

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