CG4 Converter
Save yourself from the hassle of spending countless hours trying to figure out how to convert multiple CG4 image into other formats with our fast and easy CG4 file converter.


How to Convert .cg4 Images in Bulk
1. Install reaConverter
2. Select CG4 Files

3. Start Conversion

Convert CG4 on your PC
For quick and effortless CG4 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.
Do more with your images
Converting CG4 images for use in a workflow? Touch up, transform, apply editing and effects to your images during conversion.
Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

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Last updated on February 27, 2025






CG4 images: Frequently Asked Questions
What are CG4 files?
The CG4 file format is a proprietary image format used by CALS (Continuous Acquisition and Life-cycle Support) for storing high-compression monochrome (black and white) images. It's commonly used in military and government documentation for efficient archival and distribution of technical drawings and scanned documents.
Can reaConverter open CG4 files?
reaConverter fully supports the CG4 image format – open, edit, and export CG4 files to any other popular file format with ease.
How do I change CG4 to another format?
reaConverter is a user-friendly tool for converting CG4 files. Once installed on your computer, it allows you to convert all your .cg4 files at once with just a few clicks. You can even convert cg4 images directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert CG4 online?
If you only want to convert a few CG4 images, you are welcome to try our free online CG4 converter.
How can I turn CG4 files on my computer to another format?
The best way to convert CG4 images 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 CG4.
How can I automate CG4 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 CG4 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 cg4 converter.
What else can I do with reaConverter?
Convert CAD formatsSet picture bit depthConvert Gerber imagesCrop fileChange format settings
What formats can I convert a CG4 file to?
What types of files can I convert to CG4 format?
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