I wonder if this could be implemented in Photoshop as well? Would be super useful - have found / developed a couple manual methods - but nothing as easy as this!
This likely could be done as a Photoshop plugin if I was to adjust to the Photoshop SDK for making effects for it and such, though this is the first time I'm seeing an interest for it! I originally made this plugin to speed up my pixel-animation workflow, so it found its home within After Effects. For still images though, might I suggest aseprite? It seems to have an almost exact analog of what PixContour does too!