SYN Converter

Our fast and easy SYN file converter will help you avoid spending countless hours trying to figure out how to convert multiple .syn files at once.

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reaConverter
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SYN Files
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How to Convert .syn Files in Bulk

1. Install reaConverter

Download reliable SYN conversion software to convert multiple .syn files and folders in one go.
reaConverter logo
Install reaConverter

2. Select SYN Files

Select SYNs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load SYN files

3. Start Conversion

Click Convert to start the bulk conversion of all selected SYN files. The process will begin right away.
reaConverter - Start SYN conversion

Convert SYN on your PC

For quick and effortless SYN file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Do more with your files

Converting SYN files for use in a larger project? 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 September 01, 2025
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Marcus White
Healthcare IT
"Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!"
Ben H.
Ben H.
Overwhelmed Office Hero
"Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!"
Richard E. Miller
Richard E. Miller
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
"My photography business relies on fast, accurate processing of images. With reaConverter’s Watch Folder, I drop my RAW photos into a folder and they’re instantly converted to high-res JPEGs with custom naming and watermarking. It’s streamlined my post-processing more than I imagined possible."
Emily R.
Emily R.
Photographer
"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

SYN files: Frequently Asked Questions

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.

Can reaConverter open SYN files?

reaConverter fully supports the SYN file format – open, edit, and export SYN files to any other popular file format with ease.

How do I change SYN to another format?

reaConverter is a user-friendly tool for converting SYN files. Once installed on your computer, it allows you to convert all your .syn files at once with just a few clicks. You can even convert syn images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert SYN online?

If you only want to convert a few SYN files, you are welcome to try our free online SYN converter.

How can I turn SYN files on my computer to another format?

The best way to convert SYN files on your PC is to get 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.

How can I automate SYN files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert SYN files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line syn converter.

What else can I do with reaConverter?

Change format settingsChange DPIConvert DICOM filesChange photo sizeConvert GIS files

What formats can I convert a SYN file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

Discover more

Explore our efficient SYN file converter that saves you time and effort by converting multiple .syn files into different formats.
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