HRU

HRU is a graphics format of unknown origin.

It is supported by XnView (at least XnView Classic and NConvert). XnView classifies some or all HRU files as using "LZW" compression.

Identification
HRU files produced by XnView always seem to start with the same 28 bytes, beginning with ASCII "".

Software

 * XnView (read/write)

Sample files

 * https://telparia.com/fileFormatSamples/image/hru/