Loper · Colorists & finishing

Open .cdl files on your Mac.

.cdl .cc .ccc

Color decisions from set to post: slope, offset, power and saturation, easy to read and edit.

Loper is a free, minimal editor for macOS that opens ASC CDL (.cdl, .cc, .ccc) 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.

A001C003.cc opened in Loper: ASC CDL (.cdl, .cc, .ccc) with color-coded XML
Show the file as text
<ColorCorrection id="A001C003">  <SOPNode>    <Description>Day 12, scene 42</Description>    <Slope>1.0400 1.0000 0.9600</Slope>    <Offset>-0.0120 0.0000 0.0080</Offset>    <Power>1.0000 1.0000 1.0000</Power>  </SOPNode>  <SatNode>    <Saturation>0.9500</Saturation>  </SatNode></ColorCorrection>

How to open .cdl files

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