Convert SI to CG4

The quick and simple way to convert SI to CG4 files is to use a quality batch conversion software, such as reaConverter.

reaConverter is a standalone software designed for bulk SI to CG4 conversion. reaConverter also includes features for resizing, cropping, and editing images, as well as batch processing capabilities that allow users to automate repetitive tasks.

Download
reaConverter
Convert
SI to CG4
Online
Convert

How to Convert Multiple SI Files to CG4?

1. Download and Install reaConverter

reaConverter is quick to download, install and launch. This standalone software is extremely efficient in managing a wide range of batch conversions. reaConverter is incredibly powerful and boasts an extensive variety of features.

reaConverter logo
Install reaConverter

2. Load your SI files

Start reaConverter and load all the .si files you intend to convert into .cg4. The software supports multiple SI conversion and processes all files locally on your computer.

Select SIs from a folder or by drag-and-dropping them directly into the reaConverter window.

Load your SI files into reaConverter

3. Select CG4 as output format

Pick the CG4 as output format and choose the destination folder where you want to save new .cg4 files.

Select CG4 as output format

4. Start SI to CG4 conversion

Then simply press Convert button and your conversion will begin in no time!

Screenshot

Once the conversion is complete, you can find your CG4 files in the destination folder you selected.

SI to CG4 Converter

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

Download Free Trial

Do more with your files

Converting SI 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 May 23, 2025
"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.
Satisfied Customer
"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."
⭐⭐⭐⭐⭐
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
Satisfied Customer
"I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!"
⭐⭐⭐⭐⭐
Sarah Lane
Satisfied Customer
"We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works."
⭐⭐⭐⭐⭐
David R.
IT Solutions Architect
"So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!"
⭐⭐⭐⭐⭐
Kenneth D. Carter
Satisfied Customer

SI to CG4 Conversion: FAQ

What are SI files?

The SI format is associated with Softimage, a program first released in 1988 for Silicon Graphics workstations. The software specialized in creating 3D animation for the film, broadcasting, gaming and advertising industries, and by 2000 it was replaced by an upgraded version called Softimage XSI. SI images are currently considered rare and obsolete.

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 SI to CG4?

Yes! reaConverter instantly converts .si 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 SI to CG4 online?

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

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

The best way to change SIs 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 SI to CG4.

How can I automate SI 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 SI 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 si to cg4 converter for batch processing.

What else can I do with reaConverter?

Copy metadata (EXIF, IPTC)Convert RAW photosConvert PDF filesAdd text on photosConvert GIS files

Find out more

Get advanced software for file conversion, processing, and editing, giving you complete, precise control over your work.
Download
reaConverter
Buy Now
reaConverter software