Convert rgba to dds Online: rgba2dds

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

Go to Tom's Editor

RGBA

Silicon Graphics RGB is an image format with extension RGBA.

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.