Browser EXR Viewer for OpenEXR Files
Inspect EXR render output in the browser. Multilayer, multipart, AOVs, Cryptomatte, and pixel values. No upload, no install.
An EXR file is not just a preview image. It is where the render data lives: HDR pixels, render passes, AOVs, depth, normals, Cryptomatte IDs, and metadata. Most image tools flatten that down into something easier to display. The Browser EXR Viewer is built for the moment when you need to inspect what is actually inside the file.
This is a free RenderJuice browser tool, separate from the core render app, for inspecting EXR files without uploading them. We plan to incorporate the EXR Viewer into the core RenderJuice app in due time, so output inspection can sit closer to submitted renders and files.
OpenEXR Files Locally, No Upload
Open the viewer, drop in an EXR, and it runs in the browser. Nothing is sent to a server. There is no account, no install, and no upload step.
The viewer handles multilayer and multipart EXR files, including major OpenEXR compression modes: uncompressed, RLE, ZIPS, ZIP, PIZ, PXR24, DWAA, and DWAB. It has been tested against output from Blender, Houdini, Nuke, Maya, V-Ray, Arnold, and RenderMan.
Inspect Layers, Parts, and Channels
Production EXRs can pack many passes into one file. The viewer exposes parts, layer groups, AOVs, and individual channels so you can step through what the renderer wrote before opening a full compositing setup.
Use it to confirm the beauty pass, inspect depth or normals, compare AOVs, and catch the cases where a file technically opens but the wrong layer is being shown.
Check Pixel Values
Click any pixel to inspect its values. That makes the viewer useful when a render looks wrong but the reason is not obvious from the flattened preview.
You can sanity-check scene-linear values, compare display-referred output, and catch suspicious pixels before you assume the compositor, renderer, or color transform is the problem.
Work with Cryptomatte
Cryptomatte is one of the reasons EXR files are so valuable, and one of the reasons they are awkward to inspect casually. For supported Cryptomatte files, the viewer can read Cryptomatte metadata, let you click an object to pin its matte, preview the coverage, and export the matte as a PNG for downstream tools.
That does not replace a compositor. It gives you a quick way to verify that the matte survived the render and matches the object you meant to isolate.
What This Is For
The EXR Viewer is a diagnostic tool. It is useful after a render finishes, when you want to confirm the file contains the passes, channels, and mattes you expect. It is also useful mid-pipeline, when a render looks wrong and you need to find which pass the problem is hiding in.
For full compositing, sequence playback, or final conversion, you will still use Blender, Nuke, OpenRV, DJV, or the tool already in your pipeline.
Try It
Open the viewer or read the guide.