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Why convert HDR to ICO?
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 ICO format
ICO — Windows Icon
ICO is the standard icon format for Windows, storing one or more images at different resolutions within a single file. Modern ICO files can contain high-resolution PNG-compressed images alongside traditional BMP frames for compatibility across all Windows versions.
Common uses
- Windows application and file type icons
- Website favicon (favicon.ico)
- Windows shortcut and executable icons
- Cross-resolution icon sets for Windows UI
Related conversions
Other conversions available for HDR and ICO files
Frequently asked questions
How do I convert HDR to ICO?
Upload your HDR file above, choose ICO as the output format, then click Convert. Your ICO 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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