SUN is the Sun Raster image format from Sun workstations, functionally the same as RAS and found in older Unix software.
SUN opens in GIMP, ImageMagick and IrfanView; convert to PNG/JPG for everyday viewing.
Share, post and embed pictures across sites and apps.
Work with the format in editors like Photoshop and GIMP.
Keep memories and assets in a widely-readable form.
| ✔ Strengths | ✖ Limitations |
|---|---|
| Excellent compatibility | No transparency support |
| Limited support — may need converting |
Remove the background from SUN images, upscale to 4K, or generate new visuals with SharkFoto AI.
SUN is the Sun Raster image format from Sun workstations, functionally the same as RAS and found in older Unix software.
SUN opens in GIMP, ImageMagick and IrfanView; convert to PNG/JPG for everyday viewing.
SUN is optimised for its specific use rather than strictly lossless storage.
Use SharkFoto's free tools — upload your SUN file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — SUN doesn't store transparency; convert to PNG or WEBP if you need it.