Convert EXR images to HDR online with ImageHQ.
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.exr
hdr
/v1/convert
Submit files to /v1/convert, poll the job endpoint, then download outputs programmatically.
HDR does not support alpha transparency. Transparent EXR areas must be flattened onto a background color.
Animated, sequence, or multipage inputs need explicit frame/page handling.
Converting EXR to HDR decodes the source image and writes a HDR output. Use this route when HDR is a better fit for compatibility, file size, editing, or delivery.
Quality behavior depends on HDR compression: rle_depends.
Choose conversion targets based on HDR compression, transparency, animation, metadata, and compatibility requirements.
Known metadata support: standard attributes, custom attributes, multipart metadata.
3D lighting, rendering, and HDR environment workflows.
Academy Software Foundation - official_spec
OpenEXR - official_spec
Academy Software Foundation / OpenEXR - official_spec
ImageMagick - library_documentation