Ximagic GrayDither (32 bit)

Ximagic GrayDither is a Photoshop plug-in to reduce color/grayscale images to n-level gray using dithering. As a particular case could produce B/W bitmap images (2-level grayscale).It provides automatic conversion RGB color to grayscale using Y in YCbCr color space, 4 threshold dithering methods, and direct binary search (DBS) dithering.

It support of 8/16 bits images, support of Photoshop actions/batch, support use as Smart filter, and versions for 32 and 64 bit plug-in hosts.