Download Chdman.exe [updated] -
Which specific are you hoping to compress?
In the world of emulation, managing disk-based game files—such as BIN/CUE, GDI, or ISO—can quickly become a nightmare. These formats often require multiple files for a single game, leading to cluttered folders and wasted storage space. is the essential command-line utility used to convert these bloated formats into a single, highly compressed file format known as CHD (Compressed Hunks of Data).
brew install chdman
If you want to read more about this you can check the official documentation. download chdman.exe
chdman.exe (Compressed Hunks of Data manager) is a command-line tool primarily used to compress large disc images—like PS1, PS2, and Dreamcast games—into highly efficient, lossless .chd files. 📥 Where to Download
The Ultimate Guide to chdman.exe: How to Download and Compress Your ROMs
While chdman.exe is for Windows, the source code works on all platforms. Mac users can install it via Homebrew: xcode-select --install . Which specific are you hoping to compress
: To convert all CUE files in a folder at once, use this loop in the command prompt:
No. chdman.exe is a self‑contained binary. However, the easiest way to obtain the latest version is by downloading the official MAME ZIP, which includes chdman alongside other useful utilities.
: Visit the MAME Dev Release Page and download the latest Windows binary (usually a self-extracting .exe or .7z file). is the essential command-line utility used to convert
Ensure you are running the command within the folder containing chdman.exe or that the tool is in your system PATH.
The simplest way to use chdman.exe on Windows is by using drag-and-drop batch scripts. the chdman.zip file.
This article was last updated for MAME 0.259. Always check the official changelog for new chdman parameters.
Manually typing out commands for hundreds of individual games is tedious. You can automate your entire library conversion process by creating a simple batch script that instructs chdman.exe to look at every game in the folder and convert them one by one. How to Create a Batch Script:
The most reliable way to get chdman.exe is to download the official MAME package from the MAME Development website: