Convert PNG images to HDR online with ImageHQ.
or drag and drop images here
Fast async jobs
No install required
Temporary files
Batch uploads
Sibling conversion platform
ImageHQ is built for fast image tools. For broader file conversion — including documents, videos, audio, archives, and hundreds of file formats — use ConverterHQ.
.png
hdr
/v1/convert
Submit files to /v1/convert, poll the job endpoint, then download outputs programmatically.
HDR does not support alpha transparency. Transparent PNG areas must be flattened onto a background color.
Animated, sequence, or multipage inputs need explicit frame/page handling.
Converting PNG 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: text, Exif, XMP, ICC, gamma, chromaticity.
3D lighting, rendering, and HDR environment workflows.
W3C - official_spec
MDN Web Docs - browser_documentation
ExifTool - library_documentation
ImageMagick - library_documentation