itch.io

I can't think of any missing feature right now, but if it helps, my current workflow is the following:

1. Open a high resolution input image with Gimp to add an alpha channel, remove the background, improve the edges of the target shape, etc.
2. Let PixelOver do its job with the image :) . As I said, I usually only use old features.
3. Do some final touches with an image editor like Aseprite.

Thinking about it, maybe an interactive background remover would be nice :)