Convert du1 to dds Online: du12dds

You can use Tom's Editor to easily convert images from
DU1, DUO .DU1 to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

DU1

DU1, DUO is an image format with extension DU1.

DDS

DDS are files invented by Microsoft to be used in games, mostly as textures. Images can be compressed to save space but the compression methods defined by DDS are all very fast in terms of coding and decoding.