OpenToolbox

Free LUT Generator

LUT Generator creates color-grading LUTs from 55 built-in looks and controls for exposure, white balance, lift/gamma/gain, curves, split toning and black-and-white mix. Preview on a test chart, a photo or a video frame, then export a .cube file at 17, 33 or 65 points or a HALD PNG. It also converts and resizes existing .cube and HALD files.

Export:
.cube (17/33/65) or HALD PNG
Looks:
55 built-in presets
Import:
.cube and HALD PNG
Price:
Free
Runs:
Locally, in your browser
Uploads:
None: files never leave your device
Account:
Not needed

Quick answers

Where can I use the .cube file?

In DaVinci Resolve, Premiere Pro, Final Cut Pro, After Effects, OBS, CapCut, Photoshop (Color Lookup) and most editors and cameras that accept 3D LUTs.

What is a HALD CLUT?

A PNG image that stores the same color transform as pixels. Apps such as RawTherapee, darktable, G'MIC and ImageMagick read it directly.

Loading tool…

Processed on your device: your files are never uploaded. How it works

How to use the LUT Generator

  1. Open a photo or a video (or keep the built-in test chart) to preview on.
  2. Pick one of the 55 looks, then fine-tune exposure, contrast, white balance, lift/gamma/gain, split toning, curves or black & white.
  3. Turn on Compare and drag the divider to see the original next to the graded version; adjust the intensity.
  4. Download the LUT as .cube (17, 33 or 65) or as a HALD PNG, or download your photo or video frame with the look applied.

Credits & open source

Built from scratch on web standards. Thank you to the people who make these projects.

Web platform APIs used: WebGL, Canvas 2D, createImageBitmap, File API, Pointer Events, Keyboard Events.

Full license texts: third-party notices · all credits

Frequently asked questions

Can I convert a .cube to HALD or change its size?

Yes. Import a .cube or HALD PNG, then export it in the other format or at 17, 33 or 65 points.

Are my photos uploaded?

No. The preview and the export are computed in your browser.

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