Ultra HDR Export for Lightroom Classic
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Combine a 32-bit HDR TIFF (Rec.2020, from Lightroom Classic or Camera Raw) with your SDR base JPEG into one Ultra HDR JPEG. Uses the same libultrahdr encode path as the Lightroom plugin.

Start converting How to export

All processing happens in your browser. Files never leave your device.

How to export in Lightroom or Camera Raw

Export two files with matching dimensions from Lightroom Classic or Camera Raw, then upload them below.

  1. Export HDR TIFF

    In File Settings (Lightroom Classic or Camera Raw), choose TIFF, ZIP compression, HDR Rec. 2020, 32 bits/component, and enable HDR Output. Export at the same pixel size as your final image.

    File Settings for HDR TIFF in Lightroom Classic or Camera Raw: TIFF format, ZIP compression, HDR Rec. 2020, 32 bits per component, HDR Output enabled
    HDR TIFF export settings in Lightroom Classic or Camera Raw.

  2. Export SDR JPEG

    Export again with JPEG, sRGB, quality around 90, and HDR Output turned off. Match the HDR export dimensions exactly.

    File Settings for SDR JPEG in Lightroom Classic or Camera Raw: JPEG format, sRGB color space, quality 90, HDR Output disabled
    SDR JPEG base export settings in Lightroom Classic or Camera Raw.

  3. Upload and convert

    Drop both files into the upload zones below and click Convert to Ultra HDR JPEG. Preview the result and gain map, then download.

Upload & convert

Both files must share the same width and height.

  1. HDR TIFF
  2. SDR base
  3. Convert

HDR TIFF

32-bit float Rec.2020 from Lightroom or Camera Raw

SDR base

JPEG, PNG, WebP, or TIFF — scaled to HDR size