CKEditor 4 is a highly configurable, feature-rich HTML editor designed for creating and editing rich text content. It enables users to embed images, videos, tables, and other media, along with features like drag-and-drop uploads and pasting from external sources like Word and Google Docs. This repository provides the source code for CKEditor 4 LTS, offering Extended Support Model (ESM) functionality and security fixes.
CKEditor 4 stands out due to its broad range of features, including extensive plugin support, excellent browser compatibility (including legacy browsers), and a well-defined API. The LTS version provides guaranteed security updates and bug fixes until December 2028, ensuring a stable and secure editing experience. Its extensive customization options and active community make it a robust choice for a wide range of applications.
- Rich Text Editing: Supports images, videos, tables, and other media embeds.
- Extensibility: A vast plugin ecosystem offers countless features and functionalities.
- Cross-Browser Compatibility: Provides consistent functionality across a broad range of browsers, including legacy versions.
- Accessibility: Adheres to WCAG and Section 508 standards for improved accessibility.
- Internationalization: Supports over 70 locales with full RTL support.
- Content Filtering: Includes a powerful Content Filter for quality control.
- Developer-Friendly: Well-documented API and flexible architecture for customization.
CKEditor 4 has reached End of Life (EOL) for open-source versions. However, the repository offers the CKEditor 4 LTS version, which is supported under the Extended Support Model (ESM) until December 2028. All LTS versions are released as -lts and require a license key for use. While open-source versions are available for older releases (4.22.1 and below), they lack security updates.
CKEditor 4 is ideal for developers seeking a robust, feature-rich, and highly customizable WYSIWYG editor for web applications. It benefits organizations needing long-term support through the Extended Support Model. It's particularly well-suited for projects requiring broad browser compatibility, content quality control, or internationalization, providing a reliable alternative to less customizable or unsupported editors.