Convert fts to dds Online: fts2dds
You can use Tom's Editor to easily convert images from
Flexible Image Transport System .FTS to Direct Show Surface
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Flexible Image Transport System is an image format with extension FTS.
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.