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indexed

Flatten all layer groups

Image > Flatten Layer Groups

Does exactly what you expect it to do. Every top-level layer group is merged (careful: only visible layers in each layer group are merged). The layer tree becomes completely flat. Why is this useful? Well, I made it because it is impossible to convert an image to Indexed mode or export it as animated GIF if it contains any layer groups. And layer groups are extremely useful for animated GIFs. It's a conundrum! And this script helps automate the process somewhat.

Indexed HSL

This script works just like the HSL adjustment Tool, but on indexed images. (I am using the same calculation Gimp uses.)

While it is relatively simple to convert in indexed image to RGB, use the HSL Tool, then convert back to an indexed image, the drawback is that the image colour index locations aren't preserved, and you need to know how many colours are in the original colormap.

This script provides the same HSL parameters and modifies the individual entries in the colourmap palette without changing the order.

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