OpenEXR, developed by Industrial Light & Magic, stores image data in 16 or 32-bit floating point and is the standard working format for VFX and compositing software like Nuke, Blender, and After Effects. ICO stores standard 8-bit integer color, so converting ICO to EXR doesn't add dynamic range that wasn't in the original file — it simply changes the container format to one that fits naturally into a VFX pipeline, occasionally useful when a UI icon needs to be composited into a rendered scene as a reference overlay.
This is an uncommon conversion, since icon design and VFX compositing are largely separate disciplines, but the process works the same way as any other format change.
- Install Turbo Batch Image Converter Pro on your Windows PC.
- Open the app and select Batch Mode for multiple files, or Individual Mode for a single ICO.
- Drag your ICO file or folder into the app window, enabling recursive folder scanning if needed.
- Set the "From" format to ICO and the "To" format to EXR.
- Click Convert. EXR files are written to the output folder, fully offline.
- 100% offline — your icon and logo files are never uploaded anywhere
- Produces EXR files compatible with Nuke, Blender, Maya, and other VFX software
- Bulk conversion of entire folders, including sub-folders, in one click
- Multi-core processing for fast handling of large batches
- Option to delete original ICO files automatically after conversion
- No recurring subscription or hidden upload limits
Does converting ICO to EXR add dynamic range?
No, ICO stores standard 8-bit integer color, so converting to EXR changes the container format without adding dynamic range that wasn't there originally.
Why would an icon need to be in EXR format?
This is uncommon, but a UI icon is occasionally composited into a rendered VFX scene as a reference overlay, which requires bringing it into EXR-based compositing software.
Can I batch-convert an entire folder of ICO files to EXR at once?
Yes, Batch Mode handles entire folders, including nested sub-folders, in a single conversion run.
Ready to convert your images offline, in bulk, with full privacy?