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.

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