GUN Converter

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

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reaConverter
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GUN Files
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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.
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Install reaConverter

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.

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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.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on November 25, 2025
"Exactly what I needed! Simple, fast, and no bloat. I use reaConverter Lite to resize and convert batches of images for documents. The presets make it super easy, and everything works smoothly."
Mark Jones
Mark Jones
Happy User
"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 deal with hundreds of images daily, and reaConverter has been a lifesaver. The Watch Folders feature lets me automate file conversions without lifting a finger. I set up a folder for incoming files and it automatically resizes, renames, and converts them into the formats I need. It's like having a personal assistant!"
Sarah T.
Sarah T.
Graphic Designer
"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
"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
Happy User

GUN files: Frequently Asked Questions

What are GUN files?

GUN is an image file format associated with Gunpaint, a currently obsolete drawing software program initially designed for Commodore 64 computers. This brand was highly popular in the 1980s and 1990s, being one of the first types of personal computers to become widely used by home users. The GUN format might also have been compatible with other models of 8-bit Commodore computers, such as the Commodore 16, 128 or SX-64. Images created with Gunpaint are most likely difficult to open using regular image viewers, so converting them is the best option.

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?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcm  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 

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