Convert hrz to dds Online: hrz2dds

You can use Tom's Editor to easily convert images from
Slow Scan Television .HRZ to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

HRZ

Slow Scan television is an image transmission method sed mainly by amateur radio operators.

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.