Charcoal is a suite of applications designed for the grayscaling of ebooks quickly and easily. Currently it includes two products, a standalone C++ application and a plugin for Calibre
Developed using the Ultralight framework, this lightweight application allows for the grayscaling of ebooks individually or en masse through our add folder feature.
An easy to use plugin for the ebook management app Calibre, this plugin allows you to grayscale books through the main menu and the book editor.
Documentation
Ultralight
Calibre
Qt
Pillow (Pil)