CDI File Extension
DiscJuggler Disc Image
- File Type cdi
- Developer Padus
- Popularity
- Application DiscJuggler
- Category Disk Image Files
What is a CDI file?
The CDI file extension is linked to DiscJuggler Disc Image and belongs to the Disk Image Files category, which includes 133 files.
With the creation of the DiscJuggler Disc Image (CDI), Padus introduced file format along with programs built for their use.
CDI files are compatible with various operating systems, including Windows and Mac OS. You can open a CDI file using one of 9 programs, for example DiscJuggler, PowerISO and DAEMON Tools.
Programs that support CDI files
How to open a CDI file?
The most common reason why a CDI file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
DiscJuggler, PowerISO and DAEMON Tools are recognized as the most popular software solutions for dealing with CDI files. To install the most up-to-date edition of DiscJuggler, visit the official Padus website. You can download the build that works across all operating systems.
After completing the installation, CDI files should be recognized by the system and linked to DiscJuggler.
Set DiscJuggler as the default CDI program
Setting a default program by file type in Windows
- Start by right-clicking on your CDI file and selecting the "Open With" option. From there, click "Choose another app" to continue;
- In the pop-up window, select the DiscJuggler application;
- Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening CDI files.
Change Default Program on Mac
- Right click or Control + left click on the desired CDI file;
- Select "Open in application" and click "Other";
- In the lower section of the window, you’ll find the "Enable" menu, with "Recommended Programs" pre-selected as the default option;
- Select "All Programs" in this menu, and then search for DiscJuggler. Check the box next to "Always open in app" to make sure it’s the default option.
How to edit a CDI file?
Editing CDI files requires installing professional software that lets you open and edit disk image files. Online editors have more limitations compared to dedicated DiscJuggler Disc Image programs.
Best CDI editors in 2026
Taking the above factors into account, we have selected a list of CDI editors currently available.
| CDI Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| ISOBuster | Smart Projects | Windows | 4.9 out of 5 (47 reviews) |
| PowerISO | PowerISO Computing | Windows | 4.8 out of 5 (46 reviews) |
| DiscJuggler | Padus | Windows | 4.6 out of 5 (41 review) |
| UltraIso | EZB Systems | Windows | 4.4 out of 5 (42 reviews) |
| MagicISO | MagicISO | Windows | 4.2 out of 5 (46 reviews) |
Convert to and from CDI
When a CDI file is not easy to work with, converting it to formats like ISO, DMG, CCD, BIN, ISZ or other comparable types may help.
Converting a CDI file may not fully retain all functionality, but it is generally possible to return it to the original format.
Applications such as UltraIso, AnyToISO and MagicISO offer offline conversion of CDI files to multiple formats, preserving quality.
Convert CDI to other file formats
Converting Files to CDI Format
Solve problems with CDI files
While CDI files can sometimes present difficulties, most problems can be resolved quickly with minor software modifications. Check the tips below to help solve them.
Are there any techniques or tools available to repair a damaged CDI file?
Use a recovery program to open the damaged CDI file and navigate to the "Repair" menu item. Then wait for the recovery process to complete, which allows you to automatically repair corrupted disk image files.
What are the signs that my CDI file is damaged?
Corrupted CDI disk image files may show the following signs:
- Editing the archive in DiscJuggler is accompanied by slow performance or delays;
- File hangs or crashes in DiscJuggler or other programs;
- The file does not open or opens with errors;
- Unexplained increase in CDI file size;
- Working with the file triggers the display of error messages;
What factors contribute to DiscJuggler crash?
DiscJuggler crashes can be attributed to outdated software. Make sure you have installed the latest updates for Padus products.
Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.