CkEditor 5

What is CkEditor 5?

Tomorrow's rich text editor, available today.

Powerful frame. Modular architecture. Easy to customize.

A WYSIWYG structure, multiple purposes

CKEditor 5 provides all kinds of WYSIWYG editing solutions imaginable. From editors similar to Google Docs and Medium to Slack or Twitter apps, everything is possible in a single editing framework.
Builds are out-of-the-box solutions for common editing needs. Each construct can be customized to include a fully customized feature set. The features are flexible. You can write a custom feature once and reuse it anywhere!

Modern and state-of-the-art

CKEditor 5 is an ultra-modern JavaScript-rich text editor with MVC architecture, custom data model, and virtual object documentation. It was written from scratch in ES6 and has excellent support for the web package.
Native integrations with Angular 2+, React and Vue.js are available for your convenience.
Building a mobile or cross-platform desktop application with JavaScript? CKEditor 5 supports Electron and mobile devices (Android, iOS).

Well-designed user interface with perfect UX

Text editing isn't just typing - your users will need an efficient WYSIWYG editor user interface to create links, manage images, or tables.
Seamless UX needs to be carefully designed and CKSource strives to ensure your editing process is smooth.

Rich text features your end users will love

Automatic formatting - Do your end users write a lot? Save your time with automatic formatting and useful keyboard shortcuts.
Paste into Word - Paste the content sofa from Office applications, such as Microsoft Word and Excel or Google Docs, and convert it to clean HTML.
Embed media - Insert embeddable media, such as tweets, videos (e.g., YouTube, Vimeo), Instagram or Facebook posts.
Responsive images - Drag and drop an image so it loads instantly. Built-in support for responsive images will allow your site to be mobile-friendly.

collaboration

The core of CKEditor 5 is designed to handle a custom tree-structured data model. This enables you to implement fast, reliable real-time collaboration within complex structures, such as nested tables or widgets.
We provide all the necessary infrastructure, including SaaS and scalable on-premises solutions, to enable real-time collaborative editing in your application.
With collaboration features, multiple users can write, edit, and comment simultaneously. This simplifies the process of creating and reviewing content in your application without the need for a third-party solution.

Modular, extensible and customizable

In CKEditor 5, everything is a plugin, up to a basic feature, how to type.
With a plugin-based architecture and highly decoupled, event-based code, the features are implemented granularly. You can adjust, remove, or replace plug-ins with your own implementations.
Use the data processor to produce a custom output instead of HTML, for example, Markdown, JSON, or XML. The schema lets you define custom elements or restrict which elements can appear and where.
Easily adjust the theme with CSS variables. The CKEditor 5 architecture even allows you to create your own third-party UI, for example, bootstrap or react.

Mathematical equations and spell checking

Solid and developer-friendly

Providing a rich text editing framework and out-of-the-box builds requires easy-to-understand and detailed documentation for both novice and advanced developers.
Complete API documentation is also available.

With integrated content filtering and full control over allowed content, thanks to the template schema, you can accurately define which elements or attributes can be supported.
Content Security Policy (PSC) support protects your site from attacks such as Cross-site Scripting (XSS) and data injection.

CKEditor 5 has 100% code coverage and over 8000 automated, manual, unit and integration tests.
The quality of the software is in cksource's DNA they spend more than 50% of their time writing tests and documentation.

CKEditor 5 will be maintained and supported at least until 2026.
Integrate once and use it for many years, with exceptional support provided by a team of more than 40 people with over 15 years of WYSIWYG editing experience.

System requirements

For every 250 concurrent users, CKEditor Cloud Services On-Premises requires an additional 1 Docker container with a minimum limit of 500 MB of RAM.

1 Docker container and at least 500 MB of RAM support up to 250 concurrent users.
2 Docker containers and at least 1 GB of RAM support up to 500 concurrent users.
4 Docker containers and at least 2 GB of RAM support up to 1,000 concurrent users.
8 Docker containers and at least 4 GB of RAM support up to 2,000 concurrent users.
16 Docker containers and at least 8 GB of RAM support up to 4,000 concurrent users.