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CDU Converter

Got hundreds of CDU files to convert? reaConverter handles entire folders in minutes rather than hours.

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CDU Files
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How to Convert .cdu Files in Bulk

1. Install reaConverter

Download reliable CDU conversion software to convert multiple .cdu files and folders in one go.
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Install reaConverter

2. Select CDU Files

Select CDUs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load CDU files

3. Start Conversion

Click Convert to start the bulk conversion of all selected CDU files. The process will begin right away.
reaConverter - Start CDU conversion

Step by step

See It in Action

For quick and effortless CDU file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Extra Tools

Do more with your files

Converting CDU files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
Image editing

User reviews

From those who tried it

Average User Rating:
Last updated on June 26, 2026
The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!
DeShawn M. Thompson
DeShawn M. Thompson
Happy User
Creating marketing materials for various platforms requires multiple file versions from single sources. reaConverter's workflow automation lets us generate PNG, JPEG, and SVG variants from AI and PSD files simultaneously. The color profile management ensures brand consistency across all outputs, and the processing speed allows for last-minute changes without delaying deadlines.
Rebecca Turner
Rebecca Turner
Marketing Agency CEO
So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!
Kenneth D. Carter
Kenneth D. Carter
Satisfied Customer
After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need.
Walter Morgan
Walter Morgan
Satisfied Customer
We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works.
David R.
David R.
IT Solutions Architect
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User

Questions & Answers

CDU files: Frequently Asked Questions

What are CDU files?

Images that are created or edited using CDU Paint, a bitmap manipulation software, are often associated with the CDU extension.

Can reaConverter open CDU files?

reaConverter fully supports the CDU file format – open, edit, and export CDU files to any other popular file format with ease.

How do I change CDU to another format?

reaConverter is a user-friendly tool for converting CDU files. Once installed on your computer, it allows you to convert all your .cdu files at once with just a few clicks. You can even convert cdu images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert CDU online?

If you only want to convert a few CDU files, you are welcome to try our free online CDU converter.

How can I turn CDU files on my computer to another format?

The best way to convert CDU files on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from CDU.

How can I automate CDU files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert CDU files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line cdu converter.

What else can I do with reaConverter?

Convert raster to vectorChange bit depthConvert GIS filesConvert RAW filesConvert microscopy files

What formats can I convert a CDU file to?
cdu → aicdu → apngcdu → avifcdu → bmpcdu → bpgcdu → calcdu → cg4cdu → cgmcdu → cincdu → citcdu → dcmcdu → dcxcdu → ddscdu → dgncdu → discdu → drwcdu → dwfcdu → dwgcdu → dxfcdu → emfcdu → epicdu → epscdu → faxcdu → fitscdu → flifcdu → gbrcdu → gifcdu → glbcdu → gltfcdu → hpgcdu → hrucdu → icocdu → iffcdu → igescdu → igscdu → jp2cdu → jpegcdu → jpgcdu → jxlcdu → jxrcdu → ktx2cdu → mifcdu → mtvcdu → pclcdu → pctcdu → pcxcdu → pdfcdu → pgmcdu → piccdu → pltcdu → pngcdu → ppmcdu → prccdu → pscdu → psdcdu → qoicdu → qrtcdu → radcdu → rlacdu → sgicdu → shpcdu → stepcdu → stlcdu → stpcdu → svgcdu → svgzcdu → tgacdu → tifcdu → tiffcdu → u3dcdu → webpcdu → webpllcdu → wmfcdu → wmzcdu → wpgcdu → wrlcdu → x3dcdu → xbmcdu → xpm

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Beyond CDU conversion

Convert .cdu files in batches of any size, with editing and processing applied along the way. The same tool also handles 700+ other formats, including CAD, medical imaging, and GIS.

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Free trial · Windows 10/11 · v8.0.246 · Files never leave your computer

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