Convert 3FR to CG4

Turn 3FR camera files into CG4 quickly. reaConverter handles batch RAW conversion with options for exposure, color, and quality.

Batch 3FR to CG4 conversion doesn't have to be complicated. reaConverter processes entire folders with consistent quality settings. Works offline with no internet required — convert anywhere, anytime. Handles camera RAW files with professional color management options.

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How to Convert Multiple 3FR Images to CG4?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting 3FR files in under two minutes. Apply image edits like resize, crop, or color adjustment while converting.

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Install reaConverter

2. Load your 3FR files

Launch reaConverter and load the 3FR files you want to convert. Add a few files or thousands, batch processing handles them all.

Drag files into the window, use the Add Files button, or select entire folders.

Load your 3FR files into reaConverter

3. Select CG4 as output format

Select CG4 from the output format list and set your destination folder. You can also adjust quality and compression settings.

Select CG4 as output format

4. Start 3FR to CG4 conversion

Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Start Conversion

Conversion complete? Your CG4 files are saved to the destination folder, ready to use.

3FR to CG4 Converter

reaConverter offers the fastest, simplest solution for converting your 3FR 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 3FR 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 ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Logan B.
Satisfied Customer
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Jian Wong
Happy Online User

3FR to CG4 Conversion: FAQ

What are 3FR files?

3FR is a proprietary format for Hasselblad cameras — a Swedish brand with an impressive history, including photos taken into space during the first landing on the moon. Hasselblad currently produces medium-sized cameras that are mostly used in professional photography. A 3FR file represents a RAW image captured with such a camera, without any pre-defined auto correction settings, such as white balancing or noise reduction. Shooting in RAW mode allows the photographer to apply all the desired editing in post-processing.

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 3FR to CG4?

Yes! reaConverter instantly converts .3fr 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 3FR to CG4 online?

If you only need to convert a few 3FR files to CG4 format, feel free to try our free online free online 3FR to CG4 converter — perfect for small batches with no installation needed!

How can I turn 3FR files into CG4 on my computer?

The best way to change 3FRs 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 3FR to CG4.

How can I automate 3FR 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 3FR 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 3fr to cg4 converter for batch processing.

What else can I do with reaConverter?

Set file dateConvert DICOM imagesPicture resizerConvert CAD formatsChange image bit depth

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