Environment

HDR / EXR

Drop HDR / EXR For ambient light and metal reflections

Default lighting until an HDRI is loaded.

Render

Exposure

Sphere roughness

Export thumbnail

Width

Format

Initializing HDRI preview…

About HDRI Online Preview

Uses Three.js RGBELoader / EXRLoader to parse HDR / EXR environment maps locally, mounts them as scene environment + background, and shows a metallic sphere + ring so you can judge reflection quality and tune exposure / roughness. Thumbnail export is not a WebGL screenshot — it samples the raw HDR pixels, applies Reinhard tone mapping with sRGB gamma, and outputs a true equirect JPG / PNG for asset libraries.

Related tools

PBR Material CheckHDRI affects metal reflection.
Model PreviewLight a model with HDRI.
Image PaletteSample main color from thumbnail.
Reference BoardStash HDRI thumbnails as refs.
Asset Package QAHDRI included in pack.