HDR to EXR Converter (.hdr to .exr)

Convert Radiance RGBE High Dynamic Range Image (.hdr) files to OpenEXR High Dynamic Range Image (.exr) directly on your device. HDR is commonly used for 3d rendering environment maps in blender, cinema 4d, unreal engine, and maya, while EXR is ideal for feature film compositing (nuke, after effects, blender) and linear color-space render passes. Every conversion runs locally in your browser with zero server uploads.

100% On-Device Processing • Files Never Leave Your Browser (0 KB Uploaded)

Why Convert HDR to EXR Locally?

Process studio HDRI lighting maps locally at native CPU speed. Unlike cloud converters that upload your .hdr files to remote servers, Artoons processes your files directly on your device.

How to Convert HDR to EXR

  1. Download the free Artoons Desktop App to enable the native HDR conversion engine.
  2. Drop your .hdr files or folders into the queue and select EXR (.exr).
  3. Click Convert to save your .exr files locally with no file size limits.

Frequently Asked Questions

Do my HDR files ever get uploaded anywhere?

Never — 100% of the conversion runs locally inside your own device memory with 0 KB sent over the network.

Will HDR to EXR look or sound worse?

Both HDR and EXR keep crisp detail when swapped locally on your own hardware. You can also tweak output quality in Preferences anytime.

How big of a .hdr file can I convert here?

Converted with full floating-point tone mapping in the Artoons Desktop App.

Related File Converters