guideCKEditor 4 Documentation

CKEditor 4 Developer's Guide
Learn how to install, integrate and configure CKEditor 4. More complex aspects, like creating plugins, widgets and skins are explained here, too.
CKEditor 4 API Reference
A complete API documentation.
CKEditor 4 SDK with Editor Samples
A collection of examples designed to help you get familiar with all editor features.

# Accessibility Checker for CKEditor 4

Accessibility Checker documentation

Accessibility Checker SDK sample

# Contribute

CKEditor is an Open Source project and your contribution is most welcome. Feel free to report bugs or improve the code on GitHub. Since CKEditor is localized, you can also help to translate it. You do not need to be a programmer to contribute to the project!