CHDMAN (Compressed Hunks of Data MANager) is a command-line utility developed as part of the project. Its primary functions include creating, extracting, and converting CHD (Compressed Hunks of Data) files, which are used to store disk images (hard drives, CD-ROMs, laserdiscs) in a losslessly compressed format. There is no official standalone website for CHDMAN; it is distributed exclusively as part of the MAME tool suite.
Because it is a tool for developers and power users, it does not have a fancy "Install" button. Here is the best way to download and use it safely. where to download chdman
(Compressed Hunks of Data Manager) is the industry-standard tool for compressing disc-based games (ISO, BIN/CUE, GDI) into a single, high-efficiency file format. It is primarily used to save storage space—often reducing file sizes by up to 50–70% —while maintaining lossless quality. CHDMAN (Compressed Hunks of Data MANager) is a
If you prefer not to download the full MAME suite, several community-driven sites offer lightweight, standalone versions or web-based tools. Because it is a tool for developers and
You can often find older or "lite" versions of MAME tools uploaded to Internet Archive by searching for "chdman." Why use chdman?
It is the industry standard for compressing bulky CD-ROM images (like .bin / .cue or .iso ) into high-quality, lossless .chd files. This significantly reduces file size for consoles like PlayStation, Sega Saturn, and Dreamcast while remaining compatible with major emulators like , DuckStation , and PCSX2 .