Convert BAY to CG4

BAY to CG4 with professional color control. reaConverter batch converts RAW files with options for color balance and output quality.

Tired of converting BAY files one at a time? reaConverter processes entire folders to CG4 automatically. Handles large batches reliably without crashes or timeouts. Photographers use it to batch process entire shoots in minutes.

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BAYCG4

How to Convert Multiple BAY Images to CG4?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting BAY files in under two minutes. Need edits? Resize, rotate, or add watermarks during conversion.

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Install reaConverter

2. Load your BAY files

Add your BAY files to reaConverter. Whether it's a handful or an entire archive, the batch engine processes them efficiently.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

Load your BAY files into reaConverter

3. Select CG4 as output format

Set CG4 as output format and select where to save your converted files. Customize quality settings if needed.

Select CG4 as output format

4. Start BAY to CG4 conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

Start Conversion

When finished, your new .cg4 files will be waiting in the destination folder.

BAY to CG4 Converter

reaConverter offers the fastest, simplest solution for converting your BAY files into CG4 in seconds - all photos processed on your PC for maximum privacy and speed.

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Do more with your images

Converting BAY images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

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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User Reviews

Average User Rating:
Last updated on January 25, 2026
"reaConverter saved our team hundreds of hours by digitizing decades of CG4 archives in weeks—not months. Its resolution scaling preserved every detail, even in files older than some team members!"
Anna K.
Anna K.
Satisfied Customer
"An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time."
Roger Cook
Roger Cook
Happy User
"For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results."
Jamal Bailey
Jamal Bailey
Satisfied Customer
"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User
"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
Happy User

BAY to CG4 Conversion: FAQ

What are BAY files?

The BAY format is used for storing RAW images taken with some Kodak high speed cameras, such as the Kodak HRC-1000. A BAY file is also referred to as a Kodak / Roper Bayer Sequence and offers photographers, like all other RAW formats, the ability to apply a series of image editing features in digital post-processing. The drawback of such files is their size; though highly adaptable, they tend to have enormous sizes.

What are CG4 files?

CG4 is a raster format associated with CALS (Continuous Acquisition and Life-Cycle Support) — a program initiated by the US Department of Defense to capture and link military data. CG4 is compatible with a very limited number of digital graphics programs. Files with this extension contain a bitmap that often uses the CCITT4 compression, which is an old fax machine standard used for black-and-white images.

Can reaConverter convert BAY to CG4?

Yes! reaConverter instantly converts .bay to .cg4 with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert BAY to CG4 online?

If you only need to convert a few BAY files to CG4 format, feel free to try our free online free online BAY to CG4 converter — perfect for small batches with no installation needed!

How can I turn BAY files into CG4 on my computer?

The best way to change BAYs to CG4s on your PC is to install 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 BAY to CG4.

How can I automate BAY to CG4 files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert BAY files to CG4 using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line bay to cg4 converter for batch processing.

What else can I do with reaConverter?

Set manual file dateConvert GIS filesConvert DICOM filesPicture resizerChange format settings

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