GUN Converter

GUN conversion that keeps your files private. reaConverter runs offline on your PC with full batch processing.

How to Convert .gun Files in Bulk

1. Install reaConverter

Download reliable GUN conversion software to convert multiple .gun files and folders in one go.

2. Select GUN Files

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

3. Start Conversion

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

Convert GUN on your PC

For quick and effortless GUN 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.

Do more with your files

Converting GUN 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.

Image editing

User Reviews

Average User Rating:
Last updated on November 27, 2025
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
Happy User
"I was drowning in mismatched file formats until I found reaConverter. The one-click conversion and editing tools simplified everything, and the pricing is reasonable for small businesses. Now I spend less time troubleshooting and more time growing my brand!"
Emily K.
Emily K.
E-commerce Entrepreneur
"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
"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
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Jian Wong
Happy Online User

GUN files: Frequently Asked Questions

Can reaConverter open GUN files?

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

How do I change GUN to another format?

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

Can I convert GUN online?

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

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

The best way to convert GUN 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 GUN.

How can I automate GUN 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 GUN 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 gun converter.

What else can I do with reaConverter?

Convert DICOM imagesResize pictureChange file dateCopy IPTC dataConvert vector images

What formats can I convert a GUN file to?

Discover more

Explore our efficient GUN file converter that saves you time and effort by converting multiple .gun files into different formats.
reaConverter software