Place the game file ( .iso , .gdi ) you want to convert into the same folder as chdman.exe .
chdman may encounter issues with file paths that contain certain special characters (such as accented letters or dollar signs). To avoid problems, rename your files and folders to use only standard alphanumeric characters before processing.
This will extract each CHD to a corresponding .cue and .bin file.
Use chdman to manage the large hard-drive images required for games like Killer Instinct or San Francisco Rush . Troubleshooting
Use the following command structure to compress a CD image: chdman createcd -i "path\to\your\game.cue" -o "game.chd" . download chdman.exe
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: Download the standard Windows binary distribution (usually packaged as a .exe self-extracting archive or a .zip file).
If any of these checks fail, and retry the download from the official source.
Since chdman.exe lacks a graphical user interface (GUI), running it requires using the Windows Command Prompt or creating a batch script. The Manual Command Line Method Place the game file (
Download chdman.exe: The Ultimate Guide to MAME CHD Compression
If you are into retro emulation—especially for disc-based consoles like the PlayStation, PlayStation 2, Sega Saturn, Dreamcast, or 3DO—you have likely run into storage issues. Large .bin and .cue files take up massive amounts of hard drive space. This is where comes in.
Before you click “download,” keep these points in mind:
For developers, there is a Node.js wrapper that provides pre-compiled binaries: @emmercm/chdman-linux-arm64 . This can be installed via npm using npx chdman to run the binary directly from the command line without a full MAME installation. This will extract each CHD to a corresponding
Processing one file at a time isn't efficient when you have hundreds of games. Fortunately, you can use batch commands to automate the conversion process.
Download chdman.exe: The Ultimate Guide to CHD Compression for Retro Gaming
: Many users download a pre-packaged "CHDMAN" ZIP (often found on the Recalbox Wiki OnionUI Docs ) that includes helpful batch (.bat) files for automation. Recalbox Wiki 2. How to Convert Files (Windows) Option A: The Drag-and-Drop Method (Easiest)