JavaScript WYSIWYG web text editor.
$ dotnet add package ckeditor-basic
CKEditor 4 was launched in 2012 and reached its End of Life (EOL) on June 30, 2023.
A special edition, CKEditor 4 LTS ("Long Term Support"), is available under commercial terms ("Extended Support Model") for anyone looking to .
With CKEditor 4 LTS, security updates and critical bug fixes are guaranteed until December 2026.
After June 30, 2023 the master version of the LICENSE.md file changed to reflect the license of CKEditor 4 LTS available under the Extended Support Model.
All future versions of CKEditor 4 (4.23.0-lts and above) are released as CKEditor 4 LTS distributions and require a license key.
The CKEditor 4 Nuget packages are tagged as 4.23.* without the -lts suffix, to keep it consistent with NPM versioning guidelines. Note that the version 4.23.0 and above are the LTS versions of the editor.
You may continue using CKEditor 4.22.* and below under the open source license terms. Please note, however, that the open source version no longer comes with any security updates, so your application will be at risk.
In order to install the open source version of CKEditor 4, use versions 4.22.1 and below. CKEditor 4.22.1 was the last version of CKEditor 4 available under the open source license terms.
CKEditor 5 is a great new editor with lots of exciting features.
Before upgrading, please be aware of the following changes:
You may continue using CKEditor 4.22.* (or below). The license terms of the older CKEditor 4 versions have not changed. However, please note that by using software that is no longer maintained, you are introducing a security risk to your application.
If you are not ready to replace CKEditor 4 in your application yet, you may continue using CKEditor 4 until December 2026. CKEditor 4 LTS, available under the "Extended Support Model", will ship all important security updates and critical bug fixes, providing an interrupted editing experience for your end users. Please note that this version of CKEditor 4 is available only under a special agreement and requires a license key.
A highly configurable WYSIWYG HTML editor with hundreds of features, from creating rich text content with captioned images, videos, tables, media embeds, emoji, or mentions to pasting from Word and Google Docs and drag&drop image upload.
It supports a broad range of browsers, including legacy ones.
nuget install ckeditor4-standardInstead of the standard preset, you can use any of the supported presets.
Use it on your website:
<div id="editor">
<p>This is the editor content.</p>
</div>
<script src="./ckeditor-standard.<version>/content/Scripts/ckeditor/ckeditor.js"></script>
<script>
CKEDITOR.replace( 'editor' );
</script>You can also load CKEditor 4 using CDN.
If you acquired the Extended Support Model for CKEditor 4 LTS, please read the CKEditor 4 LTS key activation guide.
In order to activate CKEditor 4 LTS, add licenseKey configure the editor with a valid license key:
<script>
CKEDITOR.replace( 'editor', {
licenseKey: 'your license key'
} );
</script>The CKEditor 4 Nuget packages come in basic, full, standard and standard-all presets, so they differ on which of official CKEditor plugins are included in each other. You can check differences between presets in the official documentation.
If you are looking for CKEditor 5, here's a link to the relevant npm package: https://www.npmjs.com/package/ckeditor5
 IE / Edge |  Firefox |  Chrome | Chrome (Android) |  Safari |  iOS Safari |  Opera |
|---|---|---|---|---|---|---|
| IE8, IE9, IE10, IE11, Edge | latest version | latest version | latest version | latest version | latest version | latest version |
Find out more in the Browser Compatibility guide.
Copyright (c) 2003-2023, CKSource Holding sp. z o.o. All rights reserved.
For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
CKEditor 4 until version 4.22.* was licensed under the terms of any of the following licenses of your choice:
CKEditor 4 LTS (starting from version 4.23.0-lts) is available under a commercial license only.