How to convert PNG to HDR
- Add your .PNG file - drop it in the box above or click to browse.
- Convert it to .HDR in a few seconds.
- Download your new .HDR file.
What to expect
- No real HDR is gained; 8-bit PNG tones are re-encoded as RGBE, not expanded.
- The Radiance format has no alpha channel, so PNG transparency is dropped.
- To view the result as an ordinary image you must tone-map it back to PNG/JPG.
Frequently asked questions
Does PNG to HDR add dynamic range?
No. Radiance
HDR can store a wide brightness range, but an 8-bit PNG carries no extra highlight or shadow data, so the conversion repackages the existing tones in RGBE encoding without creating real HDR.Why convert a PNG to HDR?
Radiance
.hdr is widely used for environment maps and lighting in 3D rendering, so a PNG may be converted to HDR to feed it into renderers and tools that expect the format.What software opens an HDR file?
GIMP, Blender, Krita and Photopea open Radiance HDR. To share it as a normal picture you must tone-map it back to PNG or JPG - a plain rename will not work.
Does transparency survive?
No. Radiance HDR uses RGBE encoding and has no alpha channel, so any PNG transparency is lost in the conversion.
