Convert PRI to CG4

Bulk PRI to CG4 conversion with consistent results. Set it up once, process thousands of files with the same quality every time.

Looking to change PRI files to CG4 format? reaConverter makes it simple — add your files, select output format, and convert entire folders in one click. Runs entirely on your hardware for maximum speed — no waiting for uploads or server queues.

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PRI to CG4
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How to Convert Multiple PRI Files to CG4?

1. Download and Install reaConverter

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

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Install reaConverter

2. Load your PRI files

Start reaConverter and add your .pri 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 PRI 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 PRI 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.

PRI to CG4 Converter

reaConverter offers the fastest, simplest solution for converting your PRI 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 PRI 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.

Conversion features
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
"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."
J. Mitchell
J. Mitchell
Satisfied Customer
"reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud."
Malik T. Martin
Malik T. Martin
Satisfied Customer

PRI to CG4 Conversion: FAQ

What are PRI files?

The PRI image format is associated with a currently obsolete image processor called Prisms. Both the software and the extension are considered uncommon, so opening such files is only possible using a limited number of image viewers.

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 PRI to CG4?

Yes! reaConverter instantly converts .pri 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 PRI to CG4 online?

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

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

The best way to change PRIs 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 PRI to CG4.

How can I automate PRI 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 PRI 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 pri to cg4 converter for batch processing.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceCopy IPTC dataConvert Gerber filesCrop picture

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