Convert GG to CGM

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

Looking to change GG files to CGM 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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GG to CGM
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How to Convert Multiple GG Files to CGM?

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 GG files

Start reaConverter and add your .gg 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 GG files into reaConverter

3. Select CGM as output format

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

Select CGM as output format

4. Start GG to CGM 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 CGM output.

GG to CGM Converter

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

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Do more with your files

Converting GG 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 24, 2026
"We faced a massive challenge: digitizing 20 years of CGM archives into PNG format. Initial estimates projected months of work, but reaConverter's powerful batch processing and resolution scaling let us complete the project in weeks. Most impressively, it handled even our pre-1994 vector files flawlessly—zero errors, perfect fidelity."
David McCullough
David McCullough
Satisfied Customer
"Converting CGM files to SVG for our digital manuals used to be a nightmare until we found reaConverter. It preserves precise scaling and metadata flawlessly, making our workflow 3x faster with zero quality loss."
Charles Long
Charles Long
Aerospace Documentation Specialist
"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

GG to CGM Conversion: FAQ

What are GG files?

A GG file represents an image associated with Koala Paint or Koala Painter — a drawing program included on the Koala Pad. This device represented a low-cost tablet released in the 1980s by Koala Technologies, designed as a drawing pad for children. Koala Painter was also released for the Commodore 64 computer, and was fairly popular among home users during the 1980s. GG files are currently considered obsolete.

What are CGM files?

CGM (Computer Graphics Metafile) is a format that contains vector graphics information (clip art, drawings) associated with graphics design or CAD programs. As opposed to other types of metafiles, such as EMF or WMF, CGM files are not only supported by Windows, but can be used on different platforms too. They are encoded using binary, character-based of clear-text encoding.

Can reaConverter convert GG to CGM?

Yes! reaConverter instantly converts .gg to .cgm 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 GG to CGM online?

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

How can I turn GG files into CGM on my computer?

The best way to change GGs to CGMs 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 GG to CGM.

How can I automate GG to CGM 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 GG files to CGM using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line gg to cgm converter for batch processing.

What else can I do with reaConverter?

Copy IPTC dataConvert vector imagesConvert picture color spaceConvert DICOM imagesImage resizer

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