100% Secure & Private
SUN Converter
Turn SUN files into other formats in seconds, straight in the browser. No account, no file size cap. For whole folders and other formats, get reaConverter.
How to Convert .sun Files in Bulk
1. Install reaConverter
2. Select SUN Files
3. Start Conversion
Step by step
See It in Action
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.
Extra Tools
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.
User reviews
From those who tried it
Average User Rating:Last updated on June 30, 2026
Questions & Answers
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 DICOM filesCrop photoTrace images to vectorChange bit depthConvert whole-slide images
What formats can I convert a SUN file to?
Discover More
Beyond SUN conversion
Convert .sun files in batches of any size, with editing and processing applied along the way. The same tool also handles 700+ other formats, including CAD, medical imaging, and GIS.
