You can run the standard chdman tool locally by installing the mame-tools package within Termux.
: Designed for landscape use, making it ideal for handheld gaming devices like the How to Use CHDroid Grant Permissions
Top Android emulators like DuckStation (PS1), AetherSX2/NetherSX2 (PS2), RetroArch (multiple cores), and Flycast (Dreamcast) read CHD files natively.
Wait for the process to finish; your new .chd file will appear in the same directory. Method 2: Using Termux (Most Reliable Method)
→ Tap “Select input folder” → Choose your source folder.
Do you prefer a or do you have access to a PC for batch processing?
You might wonder: Why CHD and not just ZIP or EZ7?
By converting your library to CHD directly on your Android device, you can free up gigabytes of storage space—allowing you to carry even more classic games in your pocket.
// CHD to ISO conversion public void convertChdToIso(File chdFile, File isoFile) // Initialize Libchd library Libchd libchd = new Libchd();
Before we look at the converters, let’s understand why this specific format is a game-changer for Android emulation.
Various community scripts on GitHub automate the installation of chdman and maxcso for easier use on mobile.
The initial conversion takes time. A 700 MB PS1 game takes roughly 1–2 minutes on a modern Snapdragon 8 Gen 2. But that is a one-time investment for years of portable gaming bliss.
For PS1 and older, select 'CD'. For PSP, select 'DVD'.
// Convert ISO to CHD libchd.convert();
Would you like step‑by‑step commands for a specific disc format (PS1, Saturn, Dreamcast) in Termux?
is a GUI front-end that ports the official chdman binary to ARM architecture. It requires no root access and handles batch conversions gracefully.
Converting game ROMs to the CHD (Compressed Hunks of Data) format on Android is a popular way for retro gamers to save storage space without losing game quality. A CHD converter simplifies this by compressing large disc-based files (like