---
# Scope:
# * Introduction to the migration problem.
# * Underline that migrating is a complex and important task.
# * List and clarify the things that need attention when migrating.

category: builds-guides
order: 260
---

# Migration from CKEditor 4

When compared to its predecessor, CKEditor 5 should be considered **a totally new editor**. Every single aspect of it was redesigned &mdash; from installation, to integration, to features, to its data model, and finally to its API. Therefore, moving applications using a previous CKEditor version to version 5 cannot be simply called an "upgrade". It is something bigger, so the "migration" term fits better.

There is no "drop in" solution for migrating. In this guide we hope to summarize the most important aspects you need to consider before you proceed with installing CKEditor 5.

Before starting, be sure that migrating is your best choice. Refer to {@link builds/guides/overview#when-not-to-use-builds When NOT to use CKEditor 5 Builds?} for more information.

## Installation and integration

The very first aspect that changed with CKEditor 5 is its installation procedure. It became much more modern with the introduction of modular patterns, UMD, npm, etc. Refer to {@link builds/guides/integration/installation Installation} for more details.

The API for integrating CKEditor with your pages also changed. It is worth checking {@link builds/guides/integration/basic-api Basic API} for an introduction.

## Features

When it comes to {@link features/index features}, there are two aspects that need to be taken into consideration:

* CKEditor 5 may still not have the same features available as CKEditor 4.
* Existing features may behave differently.

Therefore, it is worth spending some time analyzing required features.

CKEditor 5 was designed with focus on creating quality content. There are thus good reasons for it to not support some old features. You should take this chance to rethink the features available in your application and perhaps switch the approach towards a more modern reasoning.

## Image upload

CKEditor 5 supports several different image upload strategies. Check out the {@link features/image-upload comprehensive "Image upload" guide} to find out the best option for your project.

## Plugins

The trickiest migration challenge to be faced may be related to custom plugins you have developed for CKEditor 4. Although their concept may stay the same, their implementation will certainly be different and will require rewriting them from scratch.

The same may apply for third-party plugins which may not have been ported to CKEditor 5 yet.

Check the {@link builds/guides/development/plugins#creating-plugins Creating plugins} section for more information on the development of plugins.

## Themes (skins)

In CKEditor 5, the previous concept of "skins" was reviewed and is now called "themes".

If you have custom skins for CKEditor 4, these skins need to be recreated for CKEditor 5. Fortunately, {@link framework/guides/theme-customization custom theming} in CKEditor 5 is much more powerful and simpler than before.

<!--
For more information, check how to {@linkTODO create new themes in the CKEditor 5 Framework documentation}.
-->

## Existing data

An extremely important aspect to be remembered is that &mdash; because of the difference in features &mdash; the **data produced with CKEditor 4 may not be compatible with CKEditor 5 (which may lead to data loss)**.

Extensive analysis, data verification and tests should be performed on existing data. If necessary, you will need to develop conversion procedures to avoid data loss. A relatively simple yet efficient strategy of adopting CKEditor 5 into existing systems might be using CKEditor 5 for creating new content and the old editor for editing legacy content.

## Configuration options compatibility table


The following table presents configuration options available in CKEditor 4 and their equivalent in CKEditor 5.

Note: The number of options was reduced on purpose. We understood that configuring CKEditor 4 was a bit too troublesome due to the number of configuration options available (over 240). Sometimes they were definitely too low-level, also many times they were so infrequently used that it did not justify the increased level of the application complexity. This is why when designing CKEditor 5 from scratch, we decided to come with a simplified editor, with well-thought default behavior, based on the results of the [Editor Recommendations](http://ckeditor.github.io/editor-recommendations/) project.

<style>
/* See: https://github.com/ckeditor/ckeditor5/issues/1718. */
.docsearch-txt {
	table-layout: fixed;
}

.docsearch-txt tr th:nth-child( 1 ),
.docsearch-txt tr td:nth-child( 1 ) {
	width: 275px;
}
</style>

<table class="docsearch-txt">
	<thead>
		<tr>
			<th>CKEditor 4</th>
			<th>CKEditor 5</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td><span id="allowedContent"><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-allowedContent">allowedContent</a></span></td>
			<td>
				<p>Extending the list of HTML tags or attributes that CKEditor should support can be achieved by writing a plugin that (ideally) provides also means to control (insert, edit, delete) such markup.</p>
				<p>For more information on how to create plugins check the {@link framework/guides/creating-simple-plugin Creating a simple plugin} article. Looking at the source code of CKEditor 5 plugins may also give you a lot of inspiration.</p>
				<p>Note that only content that is explicitly converted between the model and the view by the editor plugins will be preserved in CKEditor 5. Check the {@link framework/guides/deep-dive/conversion-introduction conversion tutorials} to learn how to extend the conversion rules.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autoEmbed_widget">autoEmbed_widget</a></td>
			<td>Refer to the {@link features/media-embed Media embed feature} guide to learn more about media embedding in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autoGrow_bottomSpace">autoGrow_bottomSpace</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autoGrow_maxHeight">autoGrow_maxHeight</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autoGrow_minHeight">autoGrow_minHeight</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autoGrow_onStartup">autoGrow_onStartup</a></td>
			<td>
				<p>These settings are no longer needed as by default, CKEditor 5 automatically grows with content.</p>
				<p>Classic editor (CKEditor 5) no longer encapsulates the editing area in an <code>&lt;iframe&gt;</code>, which means that the height (and similar options) of the editing area can be easily controlled with CSS. For example, the <code>minHeight</code> and <code>maxHeight</code> settings can be achieved with <code>.ck-editor__editable_inline { min-height:200px; max-height:400px; }</code>.</p>
				<p> See also <a href="https://stackoverflow.com/questions/46559354/how-to-set-the-height-of-ckeditor-5-classic-editor" target="_blank" rel="noopener">How to set the height of CKEditor 5 (Classic editor)</a>.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autoUpdateElement">autoUpdateElement</a></td>
			<td>CKEditor 5 always updates the replaced element. This behavior cannot be disabled.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autocomplete_commitKeystrokes">autocomplete_commitKeystrokes</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autolink_commitKeystrokes">autolink_commitKeystrokes</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autolink_emailRegex">autolink_emailRegex</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-autolink_urlRegex">autolink_urlRegex</a></td>
			<td>Refer to the {@link features/link#autolink-feature Autolink section} of the Link guide to learn more about support for automatic linking in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-baseFloatZIndex">baseFloatZIndex</a></td>
			<td>N/A. There is a dedicated <a href="https://github.com/ckeditor/ckeditor5/issues/5352" target="_blank" rel="noopener">issue about z-index management</a> and making it more open for developers.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-baseHref">baseHref</a></td>
			<td>Not supported yet, see <a href="https://github.com/ckeditor/ckeditor5/issues/665" target="_blank" rel="noopener">the relevant GitHub issue</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-basicEntities">basicEntities</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-blockedKeystrokes">blockedKeystrokes</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-bodyClass">bodyClass</a></td>
			<td>
				<p>Classic editor (CKEditor 5) no longer encapsulates the editing area in an <code>&lt;iframe&gt;</code>, so such setting is no longer needed. Simply wrap the editor with a <code>&lt;div class=&quot;...&quot;&gt;</code> to achieve a similar result. When using  {@link examples/builds/balloon-editor balloon}, {@link examples/builds/balloon-block-editor balloon block}, {@link examples/builds/inline-editor inline} or {@link examples/builds/document-editor decoupled} editor you may add a class to the element on which the editor is initialized.</p>
				<p>Additionally, all editor types use <code>.ck-content</code> on their main root editable elements. This class can thus also be used to write stylesheet rules for the editor content.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-bodyId">bodyId</a></td>
			<td>
				<p>Classic editor (CKEditor 5) no longer encapsulates the editing area in an <code>&lt;iframe&gt;</code>, so such setting is no longer needed. Simply wrap the editor with a <code>&lt;div id=&quot;...&quot;&gt;</code> to achieve a similar result. When using balloon, balloon block, inline or decoupled editor you may add a class to the element on which the editor is initialized.</p>
				<p>Additionally, all editor types use </code>.ck-content</p> on their main root editable elements. This class can thus also be used to write stylesheet rules for the editor content.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-browserContextMenuOnCtrl">browserContextMenuOnCtrl</a></td>
			<td>No longer needed as CKEditor 5 does not have its own context menu and does not block the native browser context menu.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-clipboard_defaultContentType">clipboard_defaultContentType</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-clipboard_notificationDuration">clipboard_notificationDuration</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-cloudServices_tokenUrl">cloudServices_tokenUrl</a></td>
			<td>See {@link module:cloud-services/cloudservices~CloudServicesConfig#tokenUrl `config.cloudServices.tokenUrl`}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-cloudServices_uploadUrl">cloudServices_uploadUrl</a></td>
			<td>See {@link module:cloud-services/cloudservices~CloudServicesConfig#uploadUrl `config.cloudServices.uploadUrl`}. Check out the {@link features/image-upload comprehensive "Image upload" guide} to learn more.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-codeSnippetGeshi_url">codeSnippetGeshi_url</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-codeSnippet_codeClass">codeSnippet_codeClass</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-codeSnippet_languages">codeSnippet_languages</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-codeSnippet_theme">codeSnippet_theme</a></td>
			<td>
				<p>Refer to the {@link features/code-blocks Code block feature} guide to learn more about support for blocks of pre–formatted code in CKEditor 5.</p>
				<p>A plugin adding support for the inline <code>&lt;code&gt;</code> element is included in the {@link features/basic-styles Basic styles} package.<br>
				Note: The {@link module:basic-styles/code~Code Code feature} is not available by default in any build, but can be enabled in a {@link builds/guides/development/custom-builds custom build} (see the {@link features/basic-styles Basic styles} feature guide).</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_backStyle">colorButton_backStyle</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_colors">colorButton_colors</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_colorsPerRow">colorButton_colorsPerRow</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_enableAutomatic">colorButton_enableAutomatic</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_enableMore">colorButton_enableMore</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_foreStyle">colorButton_foreStyle</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_historyRowLimit">colorButton_historyRowLimit</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_normalizeBackground">colorButton_normalizeBackground</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-config.colorButton_renderContentColors">config.colorButton_renderContentColors</a></td>
			<td>
				<p>Refer to the {@link features/font#configuring-the-font-color-and-font-background-color-features Font feature} guide to learn more about configuring font and background color in CKEditor 5.</p>
				<p>At the same time, we also provide a new highlight plugin which allows for highlighting parts of the text with the <code>&lt;mark&gt;</code> element with different CSS classes that can be easily styled. See the {@link features/highlight Highlight feature guide} for more information .</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-contentsCss">contentsCss</a></td>
			<td>Classic editor (CKEditor 5) no longer encapsulates the editing area in an <code>&lt;iframe&gt;</code>, so such file and configuration setting is no longer needed. If for some reason you need to style the contents of the editing area differently, use the <code>.ck-content</code> selector.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-contentsLangDirection">contentsLangDirection</a></td>
			<td>Refer to the {@link features/ui-language#setting-the-language-of-the-content Setting the language of the content} guide to learn how to set the content direction using the {@link module:core/editor/editorconfig~EditorConfig#language `config.language`} configuration option.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-contentsLanguage">contentsLanguage</a></td>
			<td>Refer to the {@link features/ui-language#setting-the-language-of-the-content Setting the language of the content} guide to learn how to set the content language using the {@link module:core/editor/editorconfig~EditorConfig#language `config.language`} configuration option.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-contextmenu_contentsCss">contextmenu_contentsCss</a></td>
			<td>No longer needed as CKEditor 5 does not have its own context menu.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-copyFormatting_allowRules">copyFormatting_allowRules</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-copyFormatting_allowedContexts">copyFormatting_allowedContexts</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-copyFormatting_disallowRules">copyFormatting_disallowRules</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-copyFormatting_keystrokeCopy">copyFormatting_keystrokeCopy</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-copyFormatting_keystrokePaste">copyFormatting_keystrokePaste</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-copyFormatting_outerCursor">copyFormatting_outerCursor</a></td>
			<td>The copy formatting feature is <a href="https://github.com/ckeditor/ckeditor5/issues/1901" target="_blank" rel="noopener">not available yet</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-coreStyles_bold">coreStyles_bold</a></td>
			<td>CKEditor 5 uses the <code>&lt;strong&gt;</code> element, see <a href="https://ckeditor.github.io/editor-recommendations/features/bold.html" target="_blank" rel="noopener">Editor Recommendations - Bold</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-coreStyles_italic">coreStyles_italic</a></td>
			<td>CKEditor 5 uses the <code>&lt;i&gt;</code> element, see <a href="https://ckeditor.github.io/editor-recommendations/features/italic.html" target="_blank" rel="noopener">Editor Recommendations - Italic</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-coreStyles_strike">coreStyles_strike</a></td>
			<td>CKEditor 5 uses the <code>&lt;s&gt;</code> element, see <a href="https://ckeditor.github.io/editor-recommendations/features/strikethrough.html" target="_blank" rel="noopener">Editor Recommendations - Strikethrough</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-coreStyles_subscript">coreStyles_subscript</a></td>
			<td>
				<p>CKEditor 5 uses the <code>&lt;sub&gt;</code> element.
				<p>Note: The {@link module:basic-styles/subscript~Subscript Subscript feature} is not available by default in any build, but can be enabled in a {@link builds/guides/development/custom-builds custom build} (see the {@link features/basic-styles Basic styles} feature guide).</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-coreStyles_superscript">coreStyles_superscript</a></td>
			<td>
				<p>CKEditor 5 uses the <code>&lt;sup&gt;</code> element.
				<p>Note: The {@link module:basic-styles/superscript~Superscript Superscript feature} is not available by default in any build, but can be enabled in a {@link builds/guides/development/custom-builds custom build} (see the {@link features/basic-styles Basic styles} feature guide).</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-coreStyles_underline">coreStyles_underline</a></td>
			<td>
				<p>CKEditor 5 uses the <code>&lt;u&gt;</code> element, see <a href="https://github.com/ckeditor/editor-recommendations/issues/4" target="_blank" rel="noopener">Editor Recommendations - Underline</a>.</p>
				<p>Note: The {@link module:basic-styles/underline~Underline Underline feature} is not available by default in any build, but can be enabled in a {@link builds/guides/development/custom-builds custom build} (see the {@link features/basic-styles Basic styles} feature guide).</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-customConfig">customConfig</a></td>
			<td>For performance reasons, CKEditor 5 no longer loads a separate configuration file. Passing configuration options inline reduces the number of HTTP requests.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-dataIndentationChars">dataIndentationChars</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><span id="defaultLanguage"><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-defaultLanguage">defaultLanguage</a></span></td>
			<td>The support for multiple translations is handled by the translations service. See the {@link features/ui-language UI language} feature guide.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-devtools_styles">devtools_styles</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-devtools_textCallback">devtools_textCallback</a></td>
			<td>The old CKEditor 4 Developer Tools plugin is not available for CKEditor 5. However, check out the new {@link framework/guides/development-tools#ckeditor-5-inspector CKEditor 5 inspector} which is a far more advanced tool that will give you tons of useful information about the state of the editor such as internal data structures, selection, commands, and many more.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-dialog_backgroundCoverColor">dialog_backgroundCoverColor</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-dialog_backgroundCoverOpacity">dialog_backgroundCoverOpacity</a></td>
			<td>The use of configuration options to style selected parts of the editor was dropped in favor of much more powerful {@link framework/guides/theme-customization theme customization}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-dialog_buttonsOrder">dialog_buttonsOrder</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-dialog_magnetDistance">dialog_magnetDistance</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-dialog_noConfirmCancel">dialog_noConfirmCancel</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-dialog_startupFocusTab">dialog_startupFocusTab</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-disableNativeSpellChecker">disableNativeSpellChecker</a></td>
			<td>
				<p>Note: An official integration of the spell and grammar checking functionality for CKEditor 5 is provided by a partner solution, {@link features/spelling-and-grammar-checking WProofreader}.</p>
				<p>A dedicated configuration option to disable the native browser spell checker is unavailable. However, in case of inline, balloon and balloon block editors it can be done by setting the <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/spellcheck" target="_blank" rel="noopener"><code>spellcheck</code></a> attribute directly on the element where CKEditor should be enabled.</p>
				<p>Additionally, for all types of editors, including the classic and decoupled ones, you can also call:</p>
				<pre><code>editor.editing.view.change( writer => {
	writer.setAttribute( 'spellcheck', 'false', editor.editing.view.document.getRoot() );
} );</code></pre>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-disableNativeTableHandles">disableNativeTableHandles</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-disableObjectResizing">disableObjectResizing</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-disableReadonlyStyling">disableReadonlyStyling</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-disallowedContent">disallowedContent</a></td>
			<td>See <a href="#allowedContent"><code>config.allowedContent</code></a>. No longer needed as CKEditor 5 removes all unwanted markup that cannot be edited with the editor.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-div_wrapTable">div_wrapTable</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-docType">docType</a></td>
			<td>N/A. CKEditor 5 no longer encapsulates the editing area in an <code>&lt;iframe&gt;</code>, so the editor is using the same doctype as the page where it operates.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-easyimage_class">easyimage_class</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-easyimage_defaultStyle">easyimage_defaultStyle</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-easyimage_styles">easyimage_styles</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-easyimage_toolbar">easyimage_toolbar</a></td>
			<td>Refer to the {@link features/easy-image Easy Image} and {@link features/image Images} feature guides to learn more about image-related features and Easy Image integration in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html##cfg-editorplaceholder">editorplaceholder</a></td>
			<td>Refer to the {@link features/editor-placeholder Editor placeholder} feature guide to learn more about configuring this feature in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-emailProtection">emailProtection</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-embed_provider">embed_provider</a></td>
			<td>Refer to the {@link features/media-embed Media embed feature} guide to learn more about media embedding in CKEditor 5.</td>
		</tr>
		<tr>
			<td><span id="emoji"><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-emoji_emojiListUrl">emoji_emojiListUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-emoji_minChars">emoji_minChars</a></span></td>
			<td>Emoji can be pasted into CKEditor 5 as Unicode content. You can use the emoji picker of your operating system to insert emoji characters. Use the <kbd>Ctrl</kbd>+<kbd>Cmd</kbd>+<kbd>Space</kbd> keyboard shortcut on macOS, <kbd>Win</kbd>+<kbd>.</kbd> on Windows or the relevant emoji key on the touch keyboard of your device to open the picker.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-enableContextMenu">enableContextMenu</a></td>
			<td>N/A. CKEditor 5 does not come with a context menu. Contextual inline toolbar is preferred instead to offer contextual actions.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-enableTabKeyTools">enableTabKeyTools</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><span id="enterMode"><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-enterMode">enterMode</a></span></td>
			<td>
				<p>N/A. CKEditor 5 always creates a new paragraph (<code>&lt;p&gt;</code> element) as specified by <a href="http://ckeditor.github.io/editor-recommendations/usability/enter-key.html" target="_blank" rel="noopener">Editor Recommendations - Enter key</a>.</p>
				<p><kbd>Shift</kbd>+<kbd>Enter</kbd> can be used for creating soft line breaks.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-entities">entities</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-entities_additional">entities_additional</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-entities_greek">entities_greek</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-entities_latin">entities_latin</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-entities_processNumerical">entities_processNumerical</a></td>
			<td>N/A</td>
		</tr>
				<tr>
			<td>
			<a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-exportPdf_fileName">exportPdf_fileName</a> <br><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-exportPdf_options">exportPdf_options</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-exportPdf_service">exportPdf_service</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-exportPdf_stylesheets">exportPdf_stylesheets</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-exportPdf_tokenUrl">exportPdf_tokenUrl</a> <br>
			</td>
			<td>
				Refer to the {@link features/export-pdf Export to PDF feature} guide to learn more about about configuring the HTML to PDF converter in CKEditor 5.
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-extraAllowedContent">extraAllowedContent</a></td>
			<td>See <a href="#allowedContent"><code>config.allowedContent</code></a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-extraPlugins">extraPlugins</a></td>
			<td>Learn how to {@link builds/guides/integration/installing-plugins install plugins in CKEditor 5}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-fileTools_defaultFileName">fileTools_defaultFileName</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-fileTools_requestHeaders">fileTools_requestHeaders</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserBrowseUrl">filebrowserBrowseUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserFlashBrowseUrl">filebrowserFlashBrowseUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserFlashUploadUrl">filebrowserFlashUploadUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserImageBrowseLinkUrl">filebrowserImageBrowseLinkUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserImageBrowseUrl">filebrowserImageBrowseUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserImageUploadUrl"> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserUploadMethod">filebrowserUploadMethod</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserUploadUrl">filebrowserUploadUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserWindowFeatures">filebrowserWindowFeatures</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserWindowHeight">filebrowserWindowHeight</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserWindowWidth">filebrowserWindowWidth</a></td>
			<td>There is no equivalent of the file browser plugin in CKEditor 5 yet. See also <a href="#uploadUrl"><code>config.uploadUrl</code></a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-fillEmptyBlocks">fillEmptyBlocks</a></td>
			<td>Blocks are always filled in CKEditor 5 because this ensures that the intention of the content author (who left such empty lines) will be preserved in the output data.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-find_highlight">find_highlight</a></td>
			<td>The find and replace feature is <a href="https://github.com/ckeditor/ckeditor5/issues/1430" target="_blank" rel="noopener">not available yet</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-flashAddEmbedTag">flashAddEmbedTag</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-flashConvertOnEdit">flashConvertOnEdit</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-flashEmbedTagOnly">flashEmbedTagOnly</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-floatSpaceDockedOffsetX">floatSpaceDockedOffsetX</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-floatSpaceDockedOffsetY">floatSpaceDockedOffsetY</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-floatSpacePinnedOffsetX">floatSpacePinnedOffsetX</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-floatSpacePinnedOffsetY">floatSpacePinnedOffsetY</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-floatSpacePreferRight">floatSpacePreferRight</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-fontSize_defaultLabel">fontSize_defaultLabel</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-fontSize_sizes">fontSize_sizes</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-fontSize_style">fontSize_style</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-font_defaultLabel">font_defaultLabel</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-font_names">font_names</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-font_style">font_style</a></td>
			<td>Refer to the {@link features/font Font feature} guide to learn more about font size, family and color support in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-forceEnterMode">forceEnterMode</a></td>
			<td>N/A. Se also <a href="#enterMode"><code>config.enterMode</code></a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-forcePasteAsPlainText">forcePasteAsPlainText</a></td>
			<td>N/A. No longer needed as CKEditor 5 removes all unwanted markup that cannot be edited with the enabled editor plugins.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-forceSimpleAmpersand">forceSimpleAmpersand</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_address">format_address</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_div">format_div</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_p">format_p</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_pre">format_pre</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_h1">format_h1</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_h2">format_h2</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_h3">format_h3</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_h4">format_h4</a> <br>  <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_h5">format_h5</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_h6">format_h6</a></td>
			<td>All headings are configurable via {@link module:heading/heading~HeadingConfig#options `config.heading.options`}. See also the {@link features/headings Headings feature guide}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-format_tags">format_tags</a></td>
			<td>N/A. In order to enable additional block tags in CKEditor 5, a dedicated plugin must be provided. See also <a href="#allowedContent"><code>config.allowedContent</code></a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-fullPage">fullPage</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-grayt_autoStartup">grayt_autoStartup</a></td>
			<td>An official integration of the spell and grammar checking functionality for CKEditor 5 is provided by a partner solution, {@link features/spelling-and-grammar-checking WProofreader}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-height">height</a></td>
			<td>
				<p>Classic editor (CKEditor 5) no longer encapsulates the editing area in an <code>&lt;iframe&gt;</code>, which means that the height (and similar options) of the editing area can be easily controlled with CSS. For example the height setting can be achieved with <code>.ck-editor__editable_inline { height:400px; }</code>.</p>
				<p>In order to set the height dynamically (from JavaScript) use the view writer:</p>
				<pre><code>editor.editing.view.change( writer => {
    writer.setStyle( 'height', '400px', editor.editing.view.document.getRoot() );
} );</code></pre>
				<p>See also <a href="https://stackoverflow.com/questions/46559354/how-to-set-the-height-of-ckeditor-5-classic-editor" target="_blank" rel="noopener">How to set the height of CKEditor 5 (Classic editor)</a>.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-htmlEncodeOutput">htmlEncodeOutput</a></td>
			<td>N/A. CKEditor 5 outputs HTML markup. See also <a href="https://stackoverflow.com/questions/47555667/ckeditor-5-htmlencodeoutput-doesnt-work" target="_blank" rel="noopener">this StackOverflow question</a> and a <a href="https://github.com/ckeditor/ckeditor5/issues/698" target="_blank" rel="noopener">dedicated issue</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-ignoreEmptyParagraph">ignoreEmptyParagraph</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image2_alignClasses">image2_alignClasses</a></td>
			<td>Available via more powerful {@link module:image/image~ImageConfig#styles `config.image.styles`}. This also allows for using custom style definitions, not only left, right and center alignment. See the <a href="https://ckeditor.com/docs/ckeditor5/latest/features/image.html#image-styles" target="_blank" rel="noopener">Image styles feature overview</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image2_altRequired">image2_altRequired</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image2_captionedClass">image2_captionedClass</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image2_disableResizer">image2_disableResizer</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image2_maxSize">image2_maxSize</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image2_prefillDimensions">image2_prefillDimensions</a></td>
			<td>Refer to the {@link features/image Images feature} guide to learn more about image-related features and customization options in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-imageUploadUrl">imageUploadUrl</a></td>
			<td>See <a href="#uploadUrl"><code>config.uploadUrl</code></a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image_prefillDimensions">image_prefillDimensions</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image_previewText">image_previewText</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-image_removeLinkByEmptyURL">image_removeLinkByEmptyURL</a></td>
			<td>Refer to the {@link features/image Images feature} guide to learn more about image-related features and customization options in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-indentClasses">indentClasses</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-indentOffset">indentOffset</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-indentUnit">indentUnit</a></td>
			<td>Refer to the {@link features/indent#configuring-the-block-indentation-feature Configuring the block indentation feature} guide to learn how to customize the indentation behavior using offsets, units or classes.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-jqueryOverrideVal">jqueryOverrideVal</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-justifyClasses">justifyClasses</a></td>
			<td>Refer to the {@link features/text-alignment Text alignment feature} guide.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-keystrokes">keystrokes</a></td>
			<td>
				<p>Keystroke handlers can be registered using {@link module:core/editingkeystrokehandler~EditingKeystrokeHandler <code>EditingKeystrokeHandler</code>}. More information and examples can be found in a dedicated {@link framework/guides/architecture/ui-library#keystrokes-and-focus-management Keystrokes and focus management} section.</p>
				<p>Making keystrokes overridable through <code>config.keystrokes</code> is handled in a <a href="https://github.com/ckeditor/ckeditor5-core/issues/8" target="_blank" rel="noopener">dedicated issue</a>. There is also an issue about <a href="https://github.com/ckeditor/ckeditor5-core/issues/20" target="_blank" rel="noopener">improving keystroke handling</a>.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-language">language</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-language_list">language_list</a></td>
			<td>The support for multiple translations is handled by the translations service. See the {@link features/ui-language UI language} feature guide.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-linkDefaultProtocol">linkDefaultProtocol</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-linkJavaScriptLinksAllowed">linkJavaScriptLinksAllowed</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-linkPhoneMsg">linkPhoneMsg</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-linkPhoneRegExp">linkPhoneRegExp</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-linkShowAdvancedTab">linkShowAdvancedTab</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-linkShowTargetTab">linkShowTargetTab</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-magicline_color">magicline_color</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-magicline_everywhere">magicline_everywhere</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-magicline_holdDistance">magicline_holdDistance</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-magicline_keystrokeNext">magicline_keystrokeNext</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-magicline_keystrokePrevious">magicline_keystrokePrevious</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-magicline_tabuList">magicline_tabuList</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-magicline_triggerOffset">magicline_triggerOffset</a></td>
			<td>N/A. The magic line feature itself is <a href="https://github.com/ckeditor/ckeditor5/issues/407" target="_blank" rel="noopener">planned</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-mathJaxClass">mathJaxClass</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-mathJaxLib">mathJaxLib</a></td>
			<td>N/A. Math equation functionality for CKEditor 5 is provided by a partner solution, {@link features/math-equations MathType}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-mentions">mentions</a></td>
			<td>Refer to the {@link features/mentions Mentions feature} guide to learn more about smart autocompletion based on user input in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-menu_groups">menu_groups</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-menu_subMenuDelay">menu_subMenuDelay</a></td>
			<td>CKEditor 5 does not come with a context menu. Contextual, configurable inline toolbar is preferred instead to offer contextual actions for features such as table or image. See also {@link module:core/editor/editorconfig~EditorConfig#toolbar <code>toolbar</code>}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-newpage_html">newpage_html</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-notification_duration">notification_duration</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-on">on</a></td>
			<td>
				<p>Using the configuration file or setting to define event listeners was a bad practice so support for it was dropped.</p>
				<p>When creating an editor, a <code>Promise</code> is returned. Use <code>then/catch()</code> to define a callback when the editor is initialized or fails to start. The promise returns the created editor instance, e.g. {@link module:editor-classic/classiceditor~ClassicEditor <code>ClassicEditor</code>}, on which you can listen to its events.</p>
				<p>Note: The editor instance is not the only object on which events are fired. You can also listen to e.g. {@link module:engine/model/document~Document `Document`} events.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteFilter">pasteFilter</a></td>
			<td>Not needed as CKEditor 5 always trims the pasted content to match what the available plugins can handle. If you would like to filter the pasted content even further, please <a href="https://github.com/ckeditor/ckeditor5/issues/new?labels=type%3Afeature&template=2-feature-request.md" target="_blank" rel="noopener">report a ticket</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteFromWordCleanupFile">pasteFromWordCleanupFile</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteFromWordNumberedHeadingToList">pasteFromWordNumberedHeadingToList</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteFromWordPromptCleanup">pasteFromWordPromptCleanup</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteFromWordRemoveStyles">pasteFromWordRemoveStyles</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteFromWord_heuristicsEdgeList">pasteFromWord_heuristicsEdgeList</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteFromWord_inlineImages">pasteFromWord_inlineImages</a></td>
			<td>Refer to the {@link features/paste-from-word Paste from Word feature} guide to learn more about support for pasting from Microsoft Word in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-pasteTools_keepZeroMargins">pasteTools_keepZeroMargins</a></td>
			<td>Refer to the {@link features/paste-from-word Paste from Word} and {@link features/paste-from-word Paste from Google Docs} feature guides to learn more about support for pasting from external applications in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-plugins">plugins</a></td>
			<td>See the {@link module:core/editor/editorconfig~EditorConfig#plugins <code>plugins</code>} configuration option. The way how plugins are enabled in CKEditor 5 has changed in general. Check the articles about {@link builds/guides/development/plugins plugins} and {@link builds/guides/development/custom-builds custom builds} for more information.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-protectedSource">protectedSource</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-readOnly">readOnly</a></td>
			<td>See {@link module:core/editor/editor~Editor#isReadOnly <code>editor.isReadOnly</code>} and refer to the {@link features/read-only Read-only feature} guide.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-removeButtons">removeButtons</a></td>
			<td>N/A. A similar effect can be achieved by setting the {@link module:core/editor/editorconfig~EditorConfig#toolbar <code>toolbar</code>} option with fewer buttons.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-removeDialogTabs">removeDialogTabs</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-removeFormatAttributes">removeFormatAttributes</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-removeFormatTags">removeFormatTags</a></td>
			<td>Refer to the {@link features/remove-format Removing text formatting feature} guide to learn how to quickly remove any text formatting applied using inline HTML elements and CSS styles in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-removePlugins">removePlugins</a></td>
			<td>See {@link module:core/editor/editorconfig~EditorConfig#removePlugins `config.removePlugins`}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-resize_dir">resize_dir</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-resize_enabled">resize_enabled</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-resize_maxHeight">resize_maxHeight</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-resize_maxWidth">resize_maxWidth</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-resize_minHeight">resize_minHeight</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-resize_minWidth">resize_minWidth</a></td>
			<td>No longer needed. The editor automatically grows with content. You can also limit its height with <code>min-height</code> and <code>max-height</code> or set it with <code>height</code> if you need. If you want to allow the users to manually resize the editor, you need to implement this by behavior by yourself.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_autoStartup">scayt_autoStartup</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_contextCommands">scayt_contextCommands</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_contextMenuItemsOrder">scayt_contextMenuItemsOrder</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_customDictionaryIds">scayt_customDictionaryIds</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_customPunctuation">scayt_customPunctuation</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_customerId">scayt_customerId</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_disableOptionsStorage">scayt_disableOptionsStorage</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_elementsToIgnore">scayt_elementsToIgnore</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_handleCheckDirty">scayt_handleCheckDirty</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_handleUndoRedo">scayt_handleUndoRedo</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_ignoreAllCapsWords">scayt_ignoreAllCapsWords</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_ignoreDomainNames">scayt_ignoreDomainNames</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_ignoreWordsWithMixedCases">scayt_ignoreWordsWithMixedCases</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_ignoreWordsWithNumbers">scayt_ignoreWordsWithNumbers</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_inlineModeImmediateMarkup">scayt_inlineModeImmediateMarkup</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_maxSuggestions">scayt_maxSuggestions</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_minWordLength">scayt_minWordLength</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_moreSuggestions">scayt_moreSuggestions</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_sLang">scayt_sLang</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_serviceHost">scayt_serviceHost</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_servicePath">scayt_servicePath</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_servicePort">scayt_servicePort</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_serviceProtocol">scayt_serviceProtocol</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_srcUrl">scayt_srcUrl</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_uiTabs">scayt_uiTabs</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-scayt_userDictionaryName">scayt_userDictionaryName</a></td>
			<td>The spell and grammar checking functionality for CKEditor 5 is provided by a partner solution, {@link features/spelling-and-grammar-checking WProofreader}.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-sharedSpaces">sharedSpaces</a></td>
			<td>
				<p>N/A.</p>
				<p>The {@link module:editor-decoupled/decouplededitor~DecoupledEditor decoupled editor} allows configuring where should the toolbar and the editable element be inserted.</p>
				<p>In addition to that, CKEditor 5 Framework architecture allows for writing a custom editor that contains multiple editable elements (document roots). See the {@link examples/framework/multi-root-editor multi-root editor example}.</p>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-shiftEnterMode">shiftEnterMode</a></td>
			<td>
				<p>N/A. CKEditor 5 always creates a new paragraph (<code>&lt;p&gt;</code> element) as specified by <a href="http://ckeditor.github.io/editor-recommendations/usability/enter-key.html" target="_blank" rel="noopener">Editor Recommendations - Enter key</a>.</p>
				<p><kbd>Shift</kbd>+<kbd>Enter</kbd> can be used for creating soft line breaks.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-skin">skin</a></td>
			<td>
				<p>In CKEditor 5 lots of changes to the interface can be easily made by changing the default CKEditor theme. See the {@link examples/theme-customization Theme customization guide}.</p>
				<p>For heavy UI modifications, like integrating CKEditor with a custom UI framework, building a custom editor is needed. See the {@link examples/theme-customization Third-party UI guide}.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-smiley_columns">smiley_columns</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-smiley_descriptions">smiley_descriptions</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-smiley_images">smiley_images</a> <br>  <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-smiley_path">smiley_path</a></td>
			<td>N/A. There is no smiley plugin in CKEditor 5. However, <a href="#emoji">emoji</a> can be pasted into the rich-text editor as Unicode content.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-sourceAreaTabSize">sourceAreaTabSize</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-specialChars">specialChars</a></td>
			<td>Refer to the {@link features/special-characters Special characters feature} guide to learn more about support inserting special characters in CKEditor 5.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-startupFocus">startupFocus</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-startupMode">startupMode</a></td>
			<td>N/A. View source feature is not planned, see <a href="https://github.com/ckeditor/ckeditor5/issues/592" target="_blank" rel="noopener">the relevant GitHub issue</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-startupOutlineBlocks">startupOutlineBlocks</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-startupShowBorders">startupShowBorders</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-stylesSet">stylesSet</a></td>
			<td>Not available yet. Refer to the <a href="https://github.com/ckeditor/ckeditor5/issues/5700" target="_blank" rel="noopener">relevant GitHub issue</a>.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-stylesheetParser_skipSelectors">stylesheetParser_skipSelectors</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-stylesheetParser_validSelectors">stylesheetParser_validSelectors</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-tabIndex">tabIndex</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-tabSpaces">tabSpaces</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-templates">templates</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-templates_files">templates_files</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-templates_replaceContent">templates_replaceContent</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-title">title</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-toolbar">toolbar</a></td>
			<td>
				<p>See {@link module:core/editor/editorconfig~EditorConfig#toolbar `config.toolbar`}.</p>
				<p>See also {@link module:core/editor/editorconfig~EditorConfig#balloonToolbar `config.balloonToolbar`} to define the toolbar of a balloon editor and the {@link features/blocktoolbar block toolbar} feature.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-toolbarCanCollapse">toolbarCanCollapse</a></td>
			<td>N/A. The toolbar cannot be collapsed manually by the user. For distraction-free editing with the toolbar appearing when you need it, use {@link examples/builds/inline-editor inline}, {@link examples/builds/balloon-editor balloon} or {@link examples/builds/balloon-block-editor balloon block} editor.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-toolbarGroupCycling">toolbarGroupCycling</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-toolbarGroups">toolbarGroups</a></td>
			<td>N/A. {@link module:core/editor/editorconfig~EditorConfig#toolbar Toolbar buttons can be grouped} by using <code>'|'</code> as a separator.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-toolbarLocation">toolbarLocation</a></td>
			<td>N/A. Can be achieved by using the {@link module:editor-decoupled/decouplededitor~DecoupledEditor decoupled editor} or writing an editor with a customized UI view.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-toolbarStartupExpanded">toolbarStartupExpanded</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-uiColor">uiColor</a></td>
			<td>CKEditor 5 comes with a concept of much more powerful themes, where almost every aspect of the UI can be styled easily. See the {@link framework/guides/theme-customization Theme customization guide} and {@link examples/theme-customization Theme customization example}. Thanks to {@link framework/guides/theme-customization#customization-with-css-variables CSS variables} rebuilding the editor is not needed to change its styles.</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-undoStackSize">undoStackSize</a></td>
			<td>See {@link module:typing/typing~TypingConfig#undoStep `config.typing.undoStep`}.</td>
		</tr>
		<tr>
			<td><span id="uploadUrl"><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-uploadUrl">uploadUrl</a></span></td>
			<td>
				<p>There are several image upload strategies supported by CKEditor 5. Check out the {@link features/image-upload comprehensive "Image upload" guide} to learn more.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-useComputedState">useComputedState</a></td>
			<td>N/A</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-width">width</a></td>
			<td>
				<p>Classic editor (CKEditor 5) no longer encapsulates the editing area in an <code>&lt;iframe&gt;</code>, which means that the height (and similar options) of the editing area can be easily controlled with CSS. For instance, to set the width of any of the editor types, use <code>.ck-editor__editable_inline { width:400px; }</code>.</p>
				<p>In order to set the width dynamically (from JavaScript) use the view writer:</p>
				<pre><code>editor.editing.view.change( writer => {
    writer.setStyle( 'width', '400px', editor.editing.view.document.getRoot() );
} );</code></pre>
				<p>See also <a href="https://stackoverflow.com/questions/46559354/how-to-set-the-height-of-ckeditor-5-classic-editor" target="_blank" rel="noopener">How to set the height of CKEditor 5 (Classic editor)</a>.</p>
			</td>
		</tr>
		<tr>
			<td><a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_cmd">wsc_cmd</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_customDictionaryIds">wsc_customDictionaryIds</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_customLoaderScript">wsc_customLoaderScript</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_customerId">wsc_customerId</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_height">wsc_height</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_lang">wsc_lang</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_left">wsc_left</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_top">wsc_top</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_userDictionaryName">wsc_userDictionaryName</a> <br> <a href="../../../../ckeditor4/latest/api/CKEDITOR_config.html#cfg-wsc_width">wsc_width</a></td>
			<td>The spell and grammar checking functionality for CKEditor 5 is provided by a partner solution, {@link features/spelling-and-grammar-checking WProofreader}.</td>
		</tr>
	</tbody>
</table>

If you are missing any particular features or settings, feel free to {@link builds/guides/support/reporting-issues#reporting-issues-2 report an issue}. Search the [issues section in the repository](https://github.com/ckeditor/ckeditor5/issues) first as the feature you are after may have already been reported &mdash; you can support it by upvoting 👍. Please be as precise as possible, explaining the exact use case, the context where the editor is used, and the expected behavior.
