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Why convert RAS to HDR?
Fast
Your file is converted in under 30 seconds in our cloud.
Secure
Files are automatically deleted after 1 hour.
Quality preserved
Maximum quality preserved during conversion.
About the RAS format
RAS — Sun Rasterfile
RAS is the Sun Microsystems rasterfile format (also called SUN format), the native image format for SunOS and Solaris workstations. It was used for screenshots, icons, and application graphics on Sun hardware and is still encountered in legacy Unix archives.
Common uses
- Legacy Solaris/SunOS graphics files
- Converting old Sun workstation screenshots
- Unix workstation archive recovery
- Historical software documentation images
About the HDR format
HDR — Radiance RGBE High Dynamic Range
HDR (Radiance .hdr) is a high dynamic range image format developed for the Radiance rendering system. It stores luminance information far beyond standard 8-bit images using a shared-exponent encoding, making it the standard for HDR environment maps in 3D rendering.
Common uses
- 3D rendering environment maps (IBL)
- HDR panorama photography storage
- VFX and CGI lighting reference images
- Tone mapping source images
Related conversions
Other conversions available for RAS and HDR files
Frequently asked questions
How do I convert RAS to HDR?
Upload your RAS file above, choose HDR as the output format, then click Convert. Your HDR file is ready to download in seconds — nothing to install, and it works in your browser.
Is the conversion free?
Yes, basic conversion is completely free. For large volumes, check out our paid plans.
What is the maximum file size?
Free accounts can convert files up to 25 MB. Pro accounts up to 100 MB.
How long are my files kept?
Files are automatically deleted after 1 hour on the free plan, 24 hours on Pro.
What formats are supported?
We support over 200 source and target formats. See our complete formats page.
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