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Analyzed almost 3 years ago. based on code collected over 7 years ago.

Project Summary

Duotoner's key purpose is to convert a full-colour image into a 2-channel image, suitable for reproduction with black ink and a single spot colour. The resulting image is saved as a CMYK image; the idea is that whichever of the three colour channels, C, M or Y is "dominant" will carry the actual colour information, and when printing, you'll replace that plate with the spot ink. The two unused channels will nonetheless carry "plausible" colours, so the DuoTone image can be used for proofing.

If, for example, you're separating to black and red, the red information will end up in both the Magenta and Yellow channels. When doing the actual print run you'd only use one of these two plates, and replace the ink with spot red - but printing a proof on a CMYK printer will still give a plausi


cmyk images spot-colors

In a Nutshell, DuoToner...

GNU General Public License v2.0 or later

Commercial Use



Place Warranty



Hold Liable


Distribute Original

Disclose Source

Include Copyright

State Changes

Include License

These details are provided for information only. No information here is legal advice and should not be used as such.

This Project has No vulnerabilities Reported Against it

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2 Other

30 Day Summary

Apr 26 2015 — May 26 2015

12 Month Summary

May 26 2014 — May 26 2015


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