Crusher

The default preset. Sets colors to 32 and pixels to x2. RGB mode.

Demonstrates how dithering affects the image. 4-color RGB, 2x pixel size

Sets colors to 4 and pixels to x4. RGB mode.

Sets colors to 4 and pixels to x8. HSV mode.

Sets colors to 2 and pixels to x16. RGB mode.

Sets colors to 2 and pixels to x32. HSV mode. Not sure why you'd ever use this, but you can.