What is a .CUBE file?
CUBE stores volumetric data such as electron density from chemistry simulations.
- Did you know
- A cube file maps a property like electron density across a 3D grid.
- Because a LUT only maps colour, it carries no notion of exposure or scene - feed it a properly exposed log image and you get the intended look, but it cannot rescue a badly exposed shot the way a live grade can.
- The .cube text format was popularised by Iridas and adopted by Adobe and DaVinci Resolve; red varies fastest down the list of rows, then green, then blue.
- 1D LUTs can only bend each channel on its own (a tone curve), so they cannot change hue or saturation - that needs a true 3D LUT, which is why most creative looks ship as 3D cubes.
- What Analyser shows you
- Open colour LUTs (.cube - the Adobe/Iridas/Resolve 3D and 1D look-up tables) and see exactly what they do: the neutral tone-response curve that reveals the contrast and colour cast, a before/after of a hue x brightness chart and memory colours (skin, sky, foliage) pushed through the LUT, and an interactive 3D scatter of the colour cube it defines. Reads the title, grid size, input domain and extended (HDR / scene-linear) output range, all in the browser. The same .cube extension that Gaussian uses for volumetric DFT data is detected and identified separately.
- Open a .CUBE file
- Drag a .CUBE file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
- Related formats
- Browse the full list of supported file types.