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EXR Workbench

Examples

EXR Channel Viewer and HDR Converter

Open OpenEXR files locally, inspect channel views, tune tone mapping, and export EXR, HDR, PNG, or inspection JSON.

What This EXR Tool Covers

Use this page when the source is an OpenEXR image and the first question is what is inside the file. The workbench focuses on RGB, alpha, and luma preview, controlled tone mapping, compression choices for EXR export, Radiance HDR output, PNG preview, and local inspection reports.

Supported EXR workflow scope

  • Input focus: OpenEXR sources used in rendering, compositing, lighting, and high dynamic range image workflows.
  • Output scope: EXR-derived exports, Radiance HDR export, PNG preview, and JSON inspection report.
  • Best fit: channel inspection, HDR review, compression checks, and lightweight format conversion before deeper desktop work.

When to use this tool

  • Inspect EXR files before conversion, delivery, or material ingestion to confirm channel structure and preview behavior.
  • Review tone mapping and per-channel visibility when HDR source data must be validated in a browser.
  • Share a compact inspection JSON report with resolution, channel view, dynamic range, and export settings.

Related tools

HDR Tool

Use the HDR page when the workflow centers on Radiance .hdr instead of OpenEXR.

UltraHDR JPEG Tool

Switch to UltraHDR when the delivery target is JPEG gain-map content for modern viewers.

How To Convert EXR to HDR

Use this guide when your next decision is whether an OpenEXR source should be exported as Radiance HDR.

Capabilities

  • Load .exr files and parse channel data safely.
  • Export processed EXR outputs with consistent metadata handling.
  • Operate per channel (R/G/B/A) before tone mapping or export.

Workflow

  1. Import EXR source and inspect channels.
  2. Apply channel transforms and tone mapping adjustments.
  3. Export EXR result and optional preview output.

FAQ

What EXR channel layouts work best here?

The current browser reader is best for common RGB/RGBA EXR files. Single-channel or deeply layered production EXR files may still need a desktop compositor.

Is this intended for linear workflow?

Yes. Processing is designed around linear space and controlled tone mapping.

Can I hand off the inspection result?

Yes. The inspection JSON includes file dimensions, selected channel view, dynamic range stats, skybox eligibility, and current tone mapping settings.