Pixelcraft is an application that has been created as a proof-of-concept to help
create pixel art for Minecraft servers. It takes an input image and generates
a .cuboid file that can be quickly loaded into any Minecraft server that uses
the Hey0 mod and Cuboid plugin.
Pixelcraft has support for two different mappers (that may give slightly
different results; choose the one you prefer the output of) that maps each pixel
in the input image to the most appropriate Minecraft block.