---
category: api-reference
---

# CKEditor 5 UI framework

[![npm version](https://badge.fury.io/js/%40ckeditor%2Fckeditor5-ui.svg)](https://www.npmjs.com/package/@ckeditor/ckeditor5-ui)

This package implements a simple UI framework and CKEditor 5's standard UI library.

Together with the {@link api/engine editing engine} and the {@link api/core core editor architecture} they create a platform for implementing rich text editors.

## Documentation

See the introduction to the {@link framework/guides/architecture/ui-library UI library's architecture}.

You can also browse the API documentation of this package by using the module tree on the left.

## Installation

```bash
npm install --save @ckeditor/ckeditor5-ui
```

## Contribute

The source code of this package is available on GitHub in https://github.com/ckeditor/ckeditor5/tree/master/packages/ckeditor5-ui.

## External links

* [`@ckeditor/ckeditor5-ui` on npm](https://www.npmjs.com/package/@ckeditor/ckeditor5-ui)
* [`ckeditor/ckeditor5-ui` on GitHub](https://github.com/ckeditor/ckeditor5/tree/master/packages/ckeditor5-ui)
* [Issue tracker](https://github.com/ckeditor/ckeditor5/issues)
* [Changelog](https://github.com/ckeditor/ckeditor5/blob/master/CHANGELOG.md)