New in this version: 2-color Amiga mode, fixed CIE94 HAM6 glitches, fixed png saving, improved sliced HAM6 conversion and non-ordered dithering.

Download:
Main mirror (all stable and testing versions)
External mirror

Changelog:

• Amiga modes: fixed png saving bug that caused colors to be slightly darker.
• Added Amiga OCS 2-color indexed mode (also as a ocs2 in cli mode).
• Amiga 2 to 256-color mode plus HAM6: serpentine non-ordered dithering (experimental), fixed non-ordered dithering when using CIEDE color distance, higher precision non-ordered dithering, faster bayer 8×8 dithering when CIEDE is also enabled.
• HAM6, HAM8: faster dual mode.
• Fixed HAM6 CIE94 set glitches.
• Higher quality sliced ham6 conversion.
• EHB extra palette optimization can now be disabled for better performance on slower machines.
• EHB animation option added to the extra options tab (the same as ehb_animation cli mode).
• HAM6 quadruple mode (very slow, experimental).
• ZX/C64/Plus4: additional bayer 4×4 dithering option.

Update 1.8.1.1: fixed a bug affecting non-amiga modes.
Update 1.8.1.2: higher quality EHB animation mode.
Update 1.8.1.3: faster EHB animation mode.