Convert SPS to CG4

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

Looking to change SPS 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.

Download
reaConverter
Convert
SPS to CG4
Online
Convert

How to Convert Multiple SPS Files to CG4?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

reaConverter logo
Install reaConverter

2. Load your SPS files

Start reaConverter and add your .sps 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 SPS 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 SPS 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.

SPS to CG4 Converter

reaConverter offers the fastest, simplest solution for converting your SPS 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 SPS 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 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
"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
"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
Sarah Lane
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

SPS to CG4 Conversion: FAQ

What are SPS files?

SPS files represent smooshed images created on Atari computers using a program called Spectrum 512. The images are in bitmap format and contain up to 512 colors. Atari computers are no longer supported by their developer since the early 1990s, though they have enjoyed great popularity in the preceding decade. SPS files are 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 SPS to CG4?

Yes! reaConverter instantly converts .sps 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 SPS to CG4 online?

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

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

The best way to change SPSs 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 SPS to CG4.

How can I automate SPS 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 SPS 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 sps to cg4 converter for batch processing.

What else can I do with reaConverter?

Copy IPTC dataConvert vector imagesConvert picture color spaceConvert DICOM imagesImage resizer

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