Convert rla to dds Online: rla2dds

You can use Tom's Editor to easily convert images from
Alias/Wavefront image file .RLA to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

RLA

Alias/Wavefront image file is an image format with extension RLA.

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.