Convert hlr to dds Online: hlr2dds

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

Go to Tom's Editor

HLR

Attributes Gigascreen is an image format with extension HLR.

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.