If it's stuck spinning, the input file is probably too big, and it may or may not finish processing, ~4000x4000 px may take up to a minute. Currently supports jpg, png, and webp formats.
Detected colors appear here. Use "Generate Colors" to only create a color palette. Colors are auto-detected using kmeans, so results will vary with repeated calculations. Click "Apply Colors" to run or rerun the pixelization progress. Autodetected colors can be manually changed, useful if a small area of accent color isn't detected.