Convert 4BT to CG4

Stop converting 4BT files one by one. reaConverter processes entire folders to CG4 automatically — just drag, drop, and click Convert.

Got a folder full of 4BT files? reaConverter batch converts them to CG4 in minutes, not hours. Local processing means instant results, even with thousands of files.

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How to Convert Multiple 4BT Files to CG4?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting 4BT files in under two minutes.

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Install reaConverter

2. Load your 4BT files

Start reaConverter and add your .4bt files. The software processes everything locally, so your files never leave your computer.

Use drag-and-drop, folder browser, or right-click conversion from Explorer.

Load your 4BT files into reaConverter

3. Select CG4 as output format

Select CG4 from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

Select CG4 as output format

4. Start 4BT to CG4 conversion

Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.

Start Conversion

Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your CG4 output.

4BT to CG4 Converter

reaConverter offers the fastest, simplest solution for converting your 4BT files into CG4 in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting 4BT files for use in a workflow? 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.

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Image editing

User Reviews

Average User Rating:
Last updated on January 20, 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
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
Happy User
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Marcus White
Healthcare IT
"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"
Robert Williams
Robert Williams
Happy User
"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"
Henry R.
Henry R.
Happy User

4BT to CG4 Conversion: FAQ

What are 4BT files?

4BT stands for "4bit" and represents an image format associated with GoDot, an image editing program used on Commodore 64 computers. Commodore was one of the first brands of personal computers available for home users and its extremely popular model 64 was released in the early 1980s. To this moment, Commodore 64 represents the best sold computer model of all time. The 4BT format is currently a rare format, so opening or editing it might be difficult with regular programs.

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 4BT to CG4?

Yes! reaConverter instantly converts .4bt 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.

Can I convert 4BT to CG4 online?

If you only need to convert a few 4BT files to CG4 format, feel free to try our free online free online 4BT to CG4 converter — perfect for small batches with no installation needed!

How can I turn 4BT files into CG4 on my computer?

The best way to change 4BTs 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 4BT to CG4.

How can I automate 4BT 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 4BT 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 4bt to cg4 converter for batch processing.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceChange format settingsChange image DPIConvert CAD formats

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