RGB Split in paint.net

Seperate RGB-Channel

To isolate each of the R, G, and B channels, duplicate the layer twice (3 total). Use Curves :Curves: in RGB mode on each layer. For each layer, set two of the lines to zero while leaving one intact. For example, to isolate green, set R and B to zero but leave green as it is. Then set the layer blend mode for each layer to additive.

How to perform RGB Split in paint.net (And another method) https://www.youtube.com/watch?v=-RMKl_AK9BE

Separate RGB channels if you're too lazy to install a plugin https://forums.getpaint.net/topic/113050-separate-rgb-channels-if-youre-too-lazy-to-install-a-plugin/ https://www.dropbox.com/s/luldx7eybsag38k/Separate%20RGB%20channels%20if%20you%27re%20too%20lazy%20to%20install%20a%20plugin..pdf?dl=0