# @ckeditor/ckeditor5-engine > The editing engine of CKEditor 5 – the best browser-based rich text editor. Latest version **48.5.2** (published 2026-09-22) · SEE LICENSE IN LICENSE.md license · 0 weekly downloads ## Install ```sh npm install @ckeditor/ckeditor5-engine pnpm add @ckeditor/ckeditor5-engine yarn add @ckeditor/ckeditor5-engine bun add @ckeditor/ckeditor5-engine ``` ## Health **Score 70/100 (B)** — status: active. Positive: has types; esm support; no vulnerabilities; recently updated; high maintenance score; popular repo. Warnings: low downloads. ## Facts | | | |---|---| | Version | 48.5.2 | | Published | 2026-09-22 | | First published | 2017-01-19 | | Weekly downloads | 0 | | License | SEE LICENSE IN LICENSE.md | | TypeScript types | bundled | | Module format | ESM + CommonJS | | Dependencies | 2 | | Unpacked size | 8.5 MB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 10496 | | Author | CKSource | | Maintainers | ckeditor | | Keywords | wysiwyg, rich text, editor, html, contentEditable, editing, operational transformation, ot, collaboration, collaborative, real-time, framework, ckeditor, ckeditor5, ckeditor 5, ckeditor5-lib | ## Links - npm: https://www.npmjs.com/package/@ckeditor/ckeditor5-engine - Repository: https://github.com/ckeditor/ckeditor5 - Homepage: https://ckeditor.com/ckeditor-5 - Issues: https://github.com/ckeditor/ckeditor5/issues - npm.io page: https://npm.io/package/@ckeditor/ckeditor5-engine ## Dependencies (2) - [es-toolkit](https://npm.io/package/es-toolkit.md) 1.52.0 - [@ckeditor/ckeditor5-utils](https://npm.io/package/@ckeditor/ckeditor5-utils.md) 48.5.2 ## Alternatives - [ext-list](https://npm.io/package/ext-list.md) — 6.3M weekly downloads - [@lexical/selection](https://npm.io/package/@lexical/selection.md) — 3.8M weekly downloads - [@lexical/text](https://npm.io/package/@lexical/text.md) — 3.6M weekly downloads - [@lexical/clipboard](https://npm.io/package/@lexical/clipboard.md) — 3.0M weekly downloads - [@tiptap/extension-mention](https://npm.io/package/@tiptap/extension-mention.md) — 3.0M weekly downloads ## Recent versions - 48.5.2 (latest) — 2026-09-22 - 0.0.0-nightly-20260923.0 (nightly) — 2026-09-23 - 47.7.5 (staging) — 2026-09-22 - 48.5.2-alpha.0 (alpha) — 2026-09-22 - 0.0.0-nightly-next-20260907.0 (nightly-next) — 2026-09-07 - 0.0.0-internal-20260224.0 (internal) — 2026-02-24 - 38.0.0-rc.1 (rc) — 2023-05-16 - 0.0.0-nightly-20260922.0 — 2026-09-22 - 0.0.0-nightly-20260921.0 — 2026-09-21 - 0.0.0-nightly-20260920.0 — 2026-09-20 - 0.0.0-nightly-20260919.0 — 2026-09-19 - 47.7.5-alpha.0 — 2026-09-18 - 0.0.0-nightly-20260918.0 — 2026-09-18 - 0.0.0-nightly-20260917.0 — 2026-09-17 - 47.7.4 — 2026-09-16 - … 1834 more at https://npm.io/package/@ckeditor/ckeditor5-engine/versions ## README CKEditor 5 editing engine ======================================== [![npm version](https://badge.fury.io/js/%40ckeditor%2Fckeditor5-engine.svg)](https://www.npmjs.com/package/@ckeditor/ckeditor5-engine) [![codecov](https://codecov.io/gh/ckeditor/ckeditor5/branch/master/graph/badge.svg)](https://codecov.io/gh/ckeditor/ckeditor5) [![CircleCI](https://circleci.com/gh/ckeditor/ckeditor5.svg?style=shield)](https://app.circleci.com/pipelines/github/ckeditor/ckeditor5?branch=master) The CKEditor 5 editing engine implements a flexible MVC-based architecture for creating rich text editing features. ## Installation This plugin is part of the `ckeditor5` package. Install the whole package to use it. ```bash npm install ckeditor5 ``` ## Create free account If you want to check full CKEditor 5 capabilities, sign up for a [free non-commitment 14-day trial](https://portal.ckeditor.com/checkout?plan=free). ## Architecture overview * **Custom data model.** CKEditor 5 implements a tree-structured custom data model, designed to fit multiple requirements such as enabling real-time collaboration and complex editing features (like tables or nested blocks). * **Virtual DOM.** CKEditor 5's editing engine features a custom, editing-oriented virtual DOM implementation that aims to hide browser quirks from your sight. **No more `contentEditable` nightmares!** * **Real-time collaborative editing**. The editor implements Operational Transformation for the tree-structured model as well as many other mechanisms which were required to create a seamless collaborative UX. Additionally, we provide cloud infrastructure and plugins enabling real-time collaborative editing in your application! [Check the collaboration demo](https://ckeditor.com/docs/ckeditor5/latest/features/collaboration/overview.html). * **Extensible.** The entire editor architecture was designed for maximum flexibility. The code is event-based and highly decoupled, allowing you to plug in or replace selected pieces. Features do not directly depend on each other and communicate in standardized ways. * **Schema-less core**. The core makes minimal assumptions and can be controlled through the schema. This leaves all decisions to plugins and to you. * **Modular architecture.** Not only can the core modules be reused and recomposed but even the features were implemented in a highly granular way. Feel like running a headless CKEditor 5 with a couple of features in Node.js? Not a problem! * **Framework for building rich-text editors.** Every use case is different and every editor needs to fulfill different goals. Therefore, we give you the freedom to create your own editors with custom-tailored features and UI. * **Heavily tested from day one.** CKEditor 5 comes with 3x more tests than React itself. All packages have 100% code coverage. * **8+ years of support.** It is not yet another framework to be gone next year or a hyped proof-of-concept to fail in a real-life scenario. We have over 15 years of experience in creating rich text editors and invested over 4 years in designing and building your next future-proof rich text editor of choice. ## Documentation For a general introduction see the [Overview of CKEditor 5 Framework](https://ckeditor.com/docs/ckeditor5/latest/framework/architecture/core-editor-architecture.html) guide and then the [Editing engine architecture guide](https://ckeditor.com/docs/ckeditor5/latest/framework/architecture/editing-engine.html). Additionally, refer to the [`@ckeditor/ckeditor5-engine` package](https://ckeditor.com/docs/ckeditor5/latest/api/engine.html) page in [CKEditor 5 documentation](https://ckeditor.com/docs/ckeditor5/latest/) for even more information. ## License Licensed under a dual-license model, this software is available under: * the [GNU General Public License Version 2 or later](https://www.gnu.org/licenses/gpl.html), * or commercial license terms from CKSource Holding sp. z o.o. For more information, see: [https://ckeditor.com/legal/ckeditor-licensing-options](https://ckeditor.com/legal/ckeditor-licensing-options). --- _Source: https://npm.io/package/@ckeditor/ckeditor5-engine · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._