Convert SD1 to CGM

SD1 to CGM converter that respects your privacy. No cloud uploads, no file size limits — just fast offline batch processing.

Online converters too slow for your SD1 files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure.

Download
reaConverter
Convert
SD1 to CGM
Online
Convert

How to Convert Multiple SD1 Files to CGM?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting SD1 files in under two minutes.

reaConverter logo
Install reaConverter

2. Load your SD1 files

Add SD1 files to reaConverter. One file or a thousand, the process is the same. Everything runs locally on your machine.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

Load your SD1 files into reaConverter

3. Select CGM as output format

Select CGM from the output format list and set your destination folder. You can also adjust quality and compression settings.

Select CGM as output format

4. Start SD1 to CGM conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

Start Conversion

When finished, your new .cgm files will be waiting in the destination folder.

SD1 to CGM Converter

reaConverter offers the fastest, simplest solution for converting your SD1 files into CGM in seconds - all files processed on your PC for maximum privacy and speed.

Download Free Trial

Do more with your files

Converting SD1 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
"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
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User
"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
Happy User
"After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need."
Walter Morgan
Walter Morgan
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

SD1 to CGM Conversion: FAQ

What are SD1 files?

The SD1 extension is attached to RAW images captured using some models of Sigma cameras. Sigma is a Japanese brand producing various types of photographic devices and cameras. The brand is best known for its lenses that can be used on cameras manufactured by several other companies, including Nikon, Canon and Panasonic. SD1 is part of a group of extensions attached to images shot in RAW mode on Sigma devices, including SD0 and SD2. All are considered rare and probably difficult to open using regular image viewers.

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 SD1 to CGM?

Yes! reaConverter instantly converts .sd1 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 SD1 to CGM online?

If you only need to convert a few SD1 files to CGM format, feel free to try our free online free online SD1 to CGM converter — perfect for small batches with no installation needed!

How can I turn SD1 files into CGM on my computer?

The best way to change SD1s 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 SD1 to CGM.

How can I automate SD1 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 SD1 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 sd1 to cgm converter for batch processing.

What else can I do with reaConverter?

Convert GIS filesConvert CAD formatsSet picture bit depthConvert RAW formatsSet file date

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