Wow exciting! I tried to use ditherit to get some baseline comparison images for my post! Is there anyway to both control the number of colors in the palette and have it auto pick colors at the same time?
That feature does not currently exist, but that is a great idea. I have added it to the list (which is just the github issue tracker, and contains no other items). I like that it auto-analyzes the palette when the images loads without requiring any further user input, but maybe an option after it loads to "auto-detect X colors" as a little dropdown thingie.