Convert NEF to HDR

Convert NEF files to HDR locally, completely free and with maximum privacy.

Drag and drop your files here

or click to browse local files (large files supported, limited only by browser RAM)

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How to convert NEF to HDR

  1. Drop your .nef files above, or click Upload Files. You can add many files at once.
  2. HDR is already selected as the output. Open the settings (gear icon) to fine-tune the result.
  3. Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
  4. Download your .hdr files as soon as each one finishes.

What to know about NEF to HDR conversion

  • NEF RAW files are developed with neutral default settings (white balance from the camera, no creative adjustments).
  • HDR is best for HDR environment maps for lighting 3D scenes, and opens in Blender, 3D renderers and HDR viewers.

NEF vs HDR

FeatureNEF (Nikon Electronic Format)HDR (Radiance HDR)
Compressionraw sensor datalossless
TransparencyNoNo
AnimationNoNo
Best forediting unprocessed Nikon photos with maximum latitudeHDR environment maps for lighting 3D scenes
Opens inLightroom, Darktable, RawTherapee and the camera maker's softwareBlender, 3D renderers and HDR viewers

NEF (Nikon Electronic Format): The RAW image format produced by Nikon digital cameras.

HDR (Radiance HDR): A high-dynamic-range RGBE image format commonly used for environment maps and lighting in 3D rendering.

Conversion options

  • Resize by width, height or both (aspect ratio is preserved)
  • Filters: grayscale, sepia, blur and sharpen
  • Custom output file name

Frequently asked questions

Is it safe to convert NEF to HDR here?

Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.

Is there a file size limit?

There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.

Can I convert several NEF files at once?

Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.

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