NextDither released

Converts true colour graphics into ZX Spectrum Next Layer 2 format for NextDAAD text adventure games.

Features:

• Two preview panel types, side-by-side, and flip
• Adjustable frame size, fit, tone and dither
• Palette control, with Adaptive (Wu), Adaptive (K-means), and RGB332 (fixed) quantiser
• 9 dither algorithms, with strength and serpentine controls
• Brightness, contrast, gammer, saturation controls
• Hue fidelity and Chroma damping: greys stay grey, and a faint cast keeps its hue instead of breaking into tinted noise
• Correcting a colour: Select a slot in the palette dock and pick any of the Next's 512 colours for it, every pixel using that slot is recoloured.
• Spatial filter switches between None, Sharpen and Blur
• Layer 2 transparency control
• 4:3 aspect ratio correction preview
• Batch conversion, convert a folder of artwork in one go
• Conversion parameter presets with save/load
• Export to NXI, ZX0 compressed, NXP, and PNG
• GUI and CLI versions included
• Portable Windows exe, with HTML docs included

Created for converting grpahics to NextDAAD format but can be used for general ZX Spectrum Next layer 2 graphics work.