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Why convert HDR to SGI?
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 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
About the SGI format
SGI — Silicon Graphics Image
SGI is the native image format of Silicon Graphics workstations, historically used in VFX, 3D animation, and scientific visualization. It was widespread in film and TV production during the 1990s, appearing in software like IRIX and early versions of Autodesk tools.
Common uses
- Legacy VFX and 3D animation workflows
- Converting old SGI workstation image archives
- Film and television post-production history
- Scientific visualization image storage
Related conversions
Other conversions available for HDR and SGI files
Frequently asked questions
How do I convert HDR to SGI?
Upload your HDR file above, choose SGI as the output format, then click Convert. Your SGI 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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