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Loper · Colorists & finishing

Open .3dl files on your Mac.

.3dl

Autodesk Flame/Lustre LUTs: the input shaper line on top, then one R G B row per grid point, with red, green and blue values in their channel colors.

Loper is a free, minimal editor for macOS that opens LUT (.3dl) instantly and colors every part of the file, so you find the value you need at a glance and can fix it right there. No IDE, no project to load, no gray wall of text.

Download Loper – freeAll formats
show.3dl opened in Loper: LUT (.3dl) with color-coded LUT (cube, 3dl)
Show the file as text
# Flame 3D LUT, 17 points, 12-bit output0 64 128 192 256 320 384 448 512 576 640 704 768 832 896 960 10230 0 00 0 4120 0 8030 377 00 389 4180 401 809352 0 0361 18 4061180 1922 36454095 4095 4095

How to open .3dl files

  1. Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
  2. Double-click your .3dl file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
  3. Want every .3dl file to open in Loper? Choose Loper › Make Loper the Default Editor….

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