Convert SYN to FAX

SYN to FAX conversion that keeps your files private. reaConverter runs offline on your computer with full batch processing support.

Looking to change SYN files to FAX 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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SYN to FAX
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How to Convert Multiple SYN Files to FAX?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

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Install reaConverter

2. Load your SYN files

Launch reaConverter and load the SYN files you want to convert. Add a few files or thousands, batch processing handles them all.

Drag-and-drop SYNs directly into reaConverter or use the folder browser to load entire directories.

Load your SYN files into reaConverter

3. Select FAX as output format

Set FAX as output format and select where to save your converted files. Customize quality settings if needed.

Select FAX as output format

4. Start SYN to FAX conversion

Press Convert to begin processing. You can watch the progress or minimize and let it run in the background.

Start Conversion

Your converted FAX files will appear in the destination folder as soon as processing completes.

SYN to FAX Converter

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

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Do more with your files

Converting SYN 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
"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
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User
"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"
Robert Williams
Robert Williams
Happy User
"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"
Henry R.
Henry R.
Happy User
"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."
Paul Baker
Paul Baker
Happy User

SYN to FAX Conversion: FAQ

What are SYN files?

SYN is an old and obsolete image format also known as Synthetic Universe. It is similar in size and features with the SYNU format, and might be equally difficult to open via regular image viewers. In case you found or were sent such a file, it's probably best to convert it to a more accessible format before trying to open it.

What are FAX files?

FAX files contain incoming or outgoing fax images created using specialized software, usually as part of a fax machine or a computer with a fax modem. This format is a fixed width Group 3 TIFF saved in black&white colors.

Can reaConverter convert SYN to FAX?

Yes! reaConverter instantly converts .syn to .fax 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 SYN to FAX online?

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

How can I turn SYN files into FAX on my computer?

The best way to change SYNs to FAXs 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 SYN to FAX.

How can I automate SYN to FAX 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 SYN files to FAX using the command prompt?

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

What else can I do with reaConverter?

Convert CAD formatsSet picture bit depthChange format settingsSet new DPICopy EXIF data

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