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---
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description: Write slightly below the normal line to show you’ re unique.
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icon: subscript
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---
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# Subscript
[![Version ](https://img.shields.io/npm/v/@tiptap/extension-subscript.svg?label=version )](https://www.npmjs.com/package/@tiptap/extension-subscript)
[![Downloads ](https://img.shields.io/npm/dm/@tiptap/extension-subscript.svg )](https://npmcharts.com/compare/@tiptap/extension-subscript?minimal=true)
Use this extension to render text in < sub > subscript</ sub > . If you pass `<sub>` or text with `vertical-align: sub` as inline style in the editor’ s initial content, both will be normalized to a `<sub>` HTML tag.
## Installation
```bash
# with npm
npm install @tiptap/extension -subscript
# with Yarn
yarn add @tiptap/extension -subscript
```
## Settings
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### HTMLAttributes
Custom HTML attributes that should be added to the rendered HTML tag.
```js
Subscript.configure({
HTMLAttributes: {
class: 'my-custom-class',
},
})
```
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## Commands
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### setSubscript()
Mark text as subscript.
```js
editor.commands.setSubscript()
```
### toggleSubscript()
Toggle subscript mark.
```js
editor.commands.toggleSubscript()
```
### unsetSubscript()
Remove subscript mark.
```js
editor.commands.unsetSubscript()
```
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## Keyboard shortcuts
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| Command | Windows/Linux | macOS |
| ----------------- | ------------------ | -------------- |
| toggleSubscript() | `Control` `,` | `Cmd` `,` |
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## Source code
[packages/extension-subscript/ ](https://github.com/ueberdosis/tiptap/blob/main/packages/extension-subscript/ )
## Usage
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https://embed.tiptap.dev/preview/Marks/Subscript