Online 3D LUT Previewer
Preview, inspect and convert .cube/.3dl/.lut/HALD files instantly.
Select an image, video, or test chart to start. Drop media and .cube/.3dl/.lut files here.
Load an image or video to see scopes
Test Charts
No footage handy? Evaluate LUTs on a color checker, gradients, or skin tones.Free Online 3D LUT Viewer & Tester
Instantly visualize standard Look Up Tables (LUTs) like .cube, .3dl, .lut (3D and 1D) and HALD CLUT .png on your own images and video clips. No need to launch heavy software like Adobe Premiere Pro, DaVinci Resolve, or Final Cut Pro just to check a color grade. This tool is perfect for video editors, colorists, and photographers who want a quick, lightweight workbench for their LUT libraries.
Real-time WebGL Rendering
We use your device's graphics card (GPU) to apply standard 3D LUT mathematics with floating-point interpolation. Preview speed depends on your device and source resolution. Browser decoding and display color management affect the result.
100% Private & Secure
Unlike other online converters, this tool runs entirely in your browser. Your personal photos and proprietary LUT files are never uploaded to any server.
Intensity Control
Many LUTs are too strong by default. Use the built-in Intensity Slider (linear or smooth curve) to blend the LUT with the original image, just like the Opacity or Gain controls in professional video editing software.
Compare, Brightness & Contrast
Use the Compare Split to check original vs. graded side-by-side, plus quick Brightness and Contrast adjustments to dial in your preview. Brightness scales display RGB values; it is not a scene-linear exposure adjustment.
Batch LUT Comparison
Load multiple LUTs and switch between them by name or with the arrow keys. Export an overview as a single contact sheet JPG, with every LUT applied to your source using the current settings. Your library is saved locally in the browser for next time. Built-in test charts (color checker, gradient ramps, color bars, skin tones) let you evaluate LUTs even without your own footage.
Video Preview & LUT Export
Drop in a short video clip to see your LUT on moving footage with play/pause and scrubbing. Dialed in the intensity? Export a new .cube with the strength baked in — this also converts .3dl, .lut, and 1D LUTs to .cube format.
Built-in Scopes
Judge grades like a colorist: a live histogram, RGB parade waveform and vectorscope (with 75% targets and skin-tone line) update in real time — even during video playback — so you can spot clipping, casts and skin-tone shifts instantly.
Approximate Log Curve Simulation
Testing a camera LUT designed for S-Log3, V-Log, or ARRI LogC? For an sRGB source, optional curve simulation can help explore its effect. It does not reproduce the camera gamut or a managed color pipeline. For actual Log footage, leave simulation Off to avoid encoding the source twice.