Convert RP to CG4

Need to convert hundreds of RP files to CG4? reaConverter does it in one click. No file limits, no watermarks, no internet required.

RP to CG4 conversion is faster with the right tool. reaConverter handles everything from a few files to thousands in one batch. Processes files consistently every time, with full control over quality and output settings.

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RP to CG4
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How to Convert Multiple RP 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.

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Install reaConverter

2. Load your RP files

Open reaConverter and import your .rp files. No file limits, no slowdowns. Add as many as you need.

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

Load your RP files into reaConverter

3. Select CG4 as output format

Select CG4 as target format and pick where to save results. You can keep default settings or fine-tune the output.

Select CG4 as output format

4. Start RP 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.

RP to CG4 Converter

reaConverter offers the fastest, simplest solution for converting your RP 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 RP 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
"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
"Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!"
Helen Evans
Helen Evans
Satisfied Customer
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
DeShawn M. Thompson
DeShawn M. Thompson
Happy User
"I'm really impressed with this software - it converts files between formats incredibly fast!"
Lin Zhang
Lin Zhang
Happy User

RP to CG4 Conversion: FAQ

What are RP files?

RP is an image format associated with Rainbow Painter, an image processor first released in the early 1990s. The program included a variety of features for image editing and capturing screenshots, and had several upgraded releases in the following years, designed for both Mac OS and Windows platforms. Rainbow Painter has now been discontinued for a few years, so the RP format is considered obsolete and uncommon.

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 RP to CG4?

Yes! reaConverter instantly converts .rp 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 RP to CG4 online?

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

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

The best way to change RPs 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 RP to CG4.

How can I automate RP 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 RP 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 rp to cg4 converter for batch processing.

What else can I do with reaConverter?

Convert DICOM imagesResize pictureConvert CAD formatsChange image bit depthConvert Gerber images

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