Bill Buckles made a bmp2dhr utility. It is considered is the best DHGR converter on the planet!
Here is a working makefile for building bmp2dhr for other platforms:brew install available:
Re: Update: Bmp2DHR and A2FCBmp - All Apple II Graphics Modes including Mode320 and Mode3200 SHR now provided
Announcing: Homebrew tap for Apple II related software
Boris Vallejo is a Peruvian painter.
Re: Bmp2DHR General DHGR Demo available for download
Re: Whereabouts of Sheldon Simms? And Whereabouts of any DHGRconversion utilities for Windows or MS-DOS...