SUN Converter

Need SUN files in a different format? reaConverter batch converts to JPG, PNG, PDF, TIFF and more.

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SUN Files
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How to Convert .sun Files in Bulk

1. Install reaConverter

Download reliable SUN conversion software to convert multiple .sun files and folders in one go.
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Install reaConverter

2. Select SUN Files

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

3. Start Conversion

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

Convert SUN on your PC

For quick and effortless SUN 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 SUN 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 March 30, 2026
"We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works."
David R.
David R.
IT Solutions Architect
"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
"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
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
"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
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User

SUN files: Frequently Asked Questions

What are SUN files?

The SUN format is part of a group called Sun Raster Images, also including RAST, RAS, SR and SCR. All were designed by Sun Microsystems for its UNIX workstations and might not be compatible with other platforms. SUN images can be black-and-white or colored, including several types of color depths.

Can reaConverter open SUN files?

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

How do I change SUN to another format?

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

Can I convert SUN online?

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

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

The best way to convert SUN 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 SUN.

How can I automate SUN 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 SUN 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 sun converter.

What else can I do with reaConverter?

Convert PDF filesWatermark photosConvert Gerber filesCrop photoConvert GIS files

What formats can I convert a SUN 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  glb  gltf  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  step  stl  stp  svg  svgz  tga  tif  tiff  u3d  webp  webpll  wmf  wmz  wpg  wrl  x3d  xbm  xpm 

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