Image to ZX Spec 1.0.5 "Omega" is now available - try it online (requires Java 6, you will be shown a security prompt) or download it (more links bottom of this post beneath changes).
You can find out more about what Image to ZX Spec can do here and here
Bill and Ted agree being Omega dithered is most excellent (click image)
- Added Bayer Ordered Dither (2x1)
- Added Omega Ordered Dither (2x2)
- Minor code changes including better error messages.
- Remembering directory locations in the file dialogs
- OpenGL hardware acceleration switch (disabled by default, source
code only adjustment required to enable it due to instability and
currently only rendering display improvements).
- Small UI changes
YouTube video tutorial
Webstart Image to ZX Spec (i.e. "online" usage - requires Java 6)
Download Image to ZX Spec 1.0.5
Download the Image to ZX Spec 1.0.5 (GPL 2) source code