Load a .cube LUT to inspect its tone curves and key values. Everything runs in your browser – your files are never uploaded.
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Drop a
.cube file here or click to browseKey figures
File name–
3D size–
Domain–
Black point (0,0,0) →–
White point (1,1,1) →–
Out-of-range values–
Neutral cast–
Luminance / contrast (neutral axis)
RGB transfer curves (neutral axis)
These curves show the response along the neutral (grey) axis, where input R=G=B. A 3D LUT can also shift colours independently of tone; such interactions are not fully captured by a single curve.
Test image preview
This is a look preview: it shows how the LUT changes colour and contrast on a synthetic test chart. It does not reflect the monitor’s RGB/BGR channel order, which only affects how the device reads the file.