loper

Loper · Colorists & finishing

Open .spi3d files on your Mac.

.spi3d

OpenColorIO 3D LUTs: the grid size, then index triplets followed by the R G B output.

Loper is a free, minimal editor for macOS that opens Sony Imageworks 3D LUT (.spi3d) 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_look.spi3d opened in Loper: Sony Imageworks 3D LUT (.spi3d) with color-coded LUT (cube, 3dl)
Show the file as text
SPILUT 1.03 333 33 330 0 0 0.000000 0.000000 0.0000001 0 0 0.031250 0.000000 0.0000002 0 0 0.062500 0.001953 0.0000000 1 0 0.000000 0.031250 0.000000

How to open .spi3d files

  1. Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
  2. Double-click your .spi3d file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
  3. Want every .spi3d file to open in Loper? Choose Loper › Make Loper the Default Editor….

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