# Heading
The Heading extension adds support for headlines. Headlines are rendered with `<h1>` to `<h6>` HTML tags. By default six headline levels are enabled, but you can pass an array to only allow a few levels, see an example below.

Type `# ​` at the beginning of a new line and it will be magically transformed to a headline, same for `## ​`, `### ​`, `#### ​`, `##### ​` and `###### ​`.

## Options
| Option | Type   | Default            | Description                                  |
| ------ | ------ | ------------------ | -------------------------------------------- |
| class  | string | –                  | Add a custom class to the rendered HTML tag. |
| levels | Array  | [1, 2, 3, 4, 5, 6] | Specifies which headlines are supported.     |

## Commands
| Command | Options | Description             |
| ------- | ------- | ----------------------- |
| heading | level   | Creates a heading node. |

## Keyboard shortcuts
* `Control` + `Shift` + `1` → H1
* `Control` + `Shift` + `2` → H2
* `Control` + `Shift` + `3` → H3
* `Control` + `Shift` + `4` → H4
* `Control` + `Shift` + `5` → H5
* `Control` + `Shift` + `6` → H6

## Source Code
[packages/extension-heading/](https://github.com/ueberdosis/tiptap-next/blob/main/packages/extension-heading/)

## Usage
<demo name="Extensions/Heading" highlight="" />