Image to HDR Converter

HDR, in the Radiance RGBE form, is a high dynamic range image format that stores light using 32-bit floating point values instead of the ordinary 8 bits per channel. That lets a single file describe an enormous range of brightness, from deep shadow to blinding highlight, far beyond what a standard image can hold. It is a foundational format in 3D rendering and visual effects, where HDR images are used as environment maps and light sources to make CGI look convincingly lit.

Converting an HDR image usually means turning that wide-range data into something a normal screen or document can show. Tone-mapping an HDR down to PNG or JPEG compresses its huge brightness range into a viewable picture you can share, post or print, which is how rendered scenes and HDR photographs reach an ordinary audience. Going the other way, HDR sources feed lighting setups in 3D software that standard images simply cannot drive.

This HDR converter runs in the browser with no signup and no watermark, handling single files or batches with individual or ZIP downloads. Use it to bridge high dynamic range source material and everyday image formats without specialist software. Keep your HDR files for rendering and lighting work, and export PNG or JPEG versions whenever you need a flat image people can view directly.