Convert arw to dds Online: arw2dds

You can use Tom's Editor to easily convert images from
Sony Digital Camera Alpha Raw Image .ARW to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

ARW

Sony Digital Camera Alpha Raw Image is an image format with extension ARW.

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.