Convert hir to dds Online: hir2dds
You can use Tom's Editor to easily convert images from
Hires-Bitmap .HIR to Direct Show Surface
.DDS.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
HIR
Hires-Bitmap is an image format with extension HIR.
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.