---
title: Headings
category: features
---
{@snippet build-classic-source}
The {@link module:heading/heading~Heading} feature enables support for headings.
This feature is enabled by default in all builds.
## Heading levels
By default this feature is configured to support `
`, `` and `` elements which are named: "Heading 1", "Heading 2" and "Heading 3", respectively. The rationale behind starting from `` is that `` should be reserved for the page's main title and the page content will usually start from ``.
You can read more about why the editor should not create `` elements in the [Headings section of Editor Recommendations](http://ckeditor.github.io/editor-recommendations/features/headings.html).
### Configuring heading levels
It is, of course, possible to configure which heading levels the editor should support and how they should be named in the Headings dropdown. Use the {@link module:heading/heading~HeadingConfig#options `heading.options`} configuration option to do so.
For example, the following editor will support only two levels of headings — `` and ``:
```html
```
```js
ClassicEditor
.create( document.querySelector( '#editor' ), {
heading: {
options: [
{ modelElement: 'paragraph', title: 'Paragraph', class: 'ck-heading_paragraph' },
{ modelElement: 'heading1', viewElement: 'h1', title: 'Heading 1', class: 'ck-heading_heading1' },
{ modelElement: 'heading2', viewElement: 'h2', title: 'Heading 2', class: 'ck-heading_heading2' }
]
}
} )
.then( ... )
.catch( ... );
```
{@snippet features/custom-heading-levels}
## Installation
This feature is enabled by default in all builds. The installation instructions are for developers interested in building their own, custom editor.
To add this feature to your editor install the [`@ckeditor/ckeditor5-heading`](https://www.npmjs.com/package/@ckeditor/ckeditor5-heading) package:
```
npm install --save @ckeditor/ckeditor5-heading
```
And add it to your plugin list and toolbar configuration:
```js
import Heading from '@ckeditor/ckeditor5-heading/src/heading';
ClassicEditor
.create( {
plugins: [ Heading, ... ],
toolbar: [ 'headings', ... ]
} )
.then( ... )
.catch( ... );
```
## Common API
The {@link module:heading/heading~Heading} plugin registers:
* The `'headings'` dropdown.
* The `'heading1'`, `'heading2'`, ..., `'headingN'` commands based on the {@link module:heading/heading~HeadingConfig#options `heading.options`} configuration option.
You can turn the currently selected block(s) to headings by executing one of these commands:
```js
editor.execute( 'heading2' );
```
## Contribute
The source code of the feature is available on GitHub in https://github.com/ckeditor/ckeditor5-heading.