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What is a RAS file?
RAS (Sun Raster) is a bitmap image format originally used on Sun Microsystems workstations and SunOS. It supports monochrome, grayscale, and color images.
While largely obsolete, RAS files are still found in legacy UNIX systems and archives. Our Online RAS Viewer helps you view these historical files.
How to View RAS Files Online
1
Upload RAS
Drag and drop your .ras or .sun file into the viewer.
2
View
The image will be displayed instantly.
3
Save
Download the image as a standard PNG file.
Frequently Asked Questions
What is a Sun Raster file?
It is the native bitmap format for the SunOS operating system and Sun workstations from the 1990s.
How do I open a RAS file on Windows?
Standard Windows viewers don't support it. Use our online viewer or tools like XnView or IrfanView.
Can I convert RAS to PNG?
Yes, you can easily convert the RAS bitmap into a widely supported PNG image using this tool.