Online 3D LUT Previewer
Preview .cube/.3dl/.lut files instantly.
Upload an image to start
Samples
Compress Your Masterpiece
Finished grading? Use Medrea to compress your massive video files for the web without losing visual quality.
Try Medrea FreeFree Online 3D LUT Viewer & Tester
Instantly visualize standard 3D Look Up Tables (LUTs) like .cube, .3dl, and .lut on your own images. 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 way to preview LUT libraries.
Real-time WebGL Rendering
We use your device's graphics card (GPU) to apply standard 3D LUT mathematics instantly. Whether it's a 16pt, 33pt, or 65pt LUT, the preview is instant and accurate.
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, Exposure & Contrast
Use the Compare Split to check original vs. graded side-by-side, plus quick Exposure and Contrast adjustments to dial in your preview.
Batch LUT Preview
Load multiple LUTs at once and quickly toggle between looks to find the best fit.