WA palettizer
Reference (original) file, which contains the desired palette:
Your file, which contains the image to convert:
Palette mode:
Normal - use all colors in the reference file
Strict - use only those colors which are used by the reference image
Quantization:
None - do not quantize, and return an error if your file contains colors which are not in the reference image
Quantize, without dithering
Quantize, with Floyd-Steinberg dithering
Quantize, with Riemersma dithering