Markdown Extensions
VitePress comes with built in Markdown Extensions.
Header Anchors
Headers automatically get anchor links applied. Rendering of anchors can be configured using the markdown.anchor
option.
Custom anchors
To specify a custom anchor tag for a heading instead of using the auto-generated one, add a suffix to the heading:
# Using custom anchors {#my-anchor}
This allows you to link to the heading as #my-anchor
instead of the default #using-custom-anchors
.
Links
Both internal and external links get special treatment.
Internal Links
Internal links are converted to router link for SPA navigation. Also, every index.md
contained in each sub-directory will automatically be converted to index.html
, with corresponding URL /
.
For example, given the following directory structure:
.
├─ index.md
├─ foo
│ ├─ index.md
│ ├─ one.md
│ └─ two.md
└─ bar
├─ index.md
├─ three.md
└─ four.md
And providing you are in foo/one.md
:
[Home](/) <!-- sends the user to the root index.md -->
[foo](/foo/) <!-- sends the user to index.html of directory foo -->
[foo heading](./#heading) <!-- anchors user to a heading in the foo index file -->
[bar - three](../bar/three) <!-- you can omit extension -->
[bar - three](../bar/three.md) <!-- you can append .md -->
[bar - four](../bar/four.html) <!-- or you can append .html -->
Page Suffix
Pages and internal links get generated with the .html
suffix by default.
External Links
Outbound links automatically get target="_blank" rel="noreferrer"
:
Frontmatter
YAML frontmatter is supported out of the box:
---
title: Blogging Like a Hacker
lang: en-US
---
This data will be available to the rest of the page, along with all custom and theming components.
For more details, see Frontmatter.
GitHub-Style Tables
Input
| Tables | Are | Cool |
| ------------- | :-----------: | ----: |
| col 3 is | right-aligned | $1600 |
| col 2 is | centered | $12 |
| zebra stripes | are neat | $1 |
Output
Tables | Are | Cool |
---|---|---|
col 3 is | right-aligned | $1600 |
col 2 is | centered | $12 |
zebra stripes | are neat | $1 |
Emoji 🎉
Input
:tada: :100:
Output
🎉 💯
A list of all emojis is available.
Table of Contents
Input
[[toc]]
Output
Rendering of the TOC can be configured using the markdown.toc
option.
Custom Containers
Custom containers can be defined by their types, titles, and contents.
Default Title
Input
::: info
This is an info box.
:::
::: tip
This is a tip.
:::
::: warning
This is a warning.
:::
::: danger
This is a dangerous warning.
:::
::: details
This is a details block.
:::
Output
INFO
This is an info box.
TIP
This is a tip.
WARNING
This is a warning.
DANGER
This is a dangerous warning.
Details
This is a details block.
Custom Title
You may set custom title by appending the text right after the "type" of the container.
Input
::: danger STOP
Danger zone, do not proceed
:::
::: details Click me to view the code
```js
console.log('Hello, VitePress!')
```
:::
Output
STOP
Danger zone, do not proceed
Click me to view the code
console.log('Hello, VitePress!')
Also, you may set custom titles globally by adding the following content in site config, helpful if not writing in English:
// config.ts
export default defineConfig({
// ...
markdown: {
container: {
tipLabel: '提示',
warningLabel: '警告',
dangerLabel: '危险',
infoLabel: '信息',
detailsLabel: '详细信息'
}
}
// ...
})
raw
This is a special container that can be used to prevent style and router conflicts with VitePress. This is especially useful when you're documenting component libraries. You might also wanna check out whyframe for better isolation.
Syntax
::: raw
Wraps in a <div class="vp-raw">
:::
vp-raw
class can be directly used on elements too. Style isolation is currently opt-in:
Install
postcss
with your preferred package manager:sh$ npm add -D postcss
Create a file named
docs/postcss.config.mjs
and add this to it:jsimport { postcssIsolateStyles } from 'vitepress' export default { plugins: [postcssIsolateStyles()] }
It uses
postcss-prefix-selector
under the hood. You can pass its options like this:jspostcssIsolateStyles({ includeFiles: [/vp-doc\.css/] // defaults to /base\.css/ })
GitHub-flavored Alerts
VitePress also supports GitHub-flavored alerts to render as callouts. They will be rendered the same as the custom containers.
> [!NOTE]
> Highlights information that users should take into account, even when skimming.
> [!TIP]
> Optional information to help a user be more successful.
> [!IMPORTANT]
> Crucial information necessary for users to succeed.
> [!WARNING]
> Critical content demanding immediate user attention due to potential risks.
> [!CAUTION]
> Negative potential consequences of an action.
NOTE
Highlights information that users should take into account, even when skimming.
TIP
Optional information to help a user be more successful.
IMPORTANT
Crucial information necessary for users to succeed.
WARNING
Critical content demanding immediate user attention due to potential risks.
CAUTION
Negative potential consequences of an action.
Syntax Highlighting in Code Blocks
VitePress uses Shiki to highlight language syntax in Markdown code blocks, using coloured text. Shiki supports a wide variety of programming languages. All you need to do is append a valid language alias to the beginning backticks for the code block:
Input
```js
export default {
name: 'MyComponent',
// ...
}
```
```html
<ul>
<li v-for="todo in todos" :key="todo.id">
{{ todo.text }}
</li>
</ul>
```
Output
export default {
name: 'MyComponent'
// ...
}
<ul>
<li v-for="todo in todos" :key="todo.id">
{{ todo.text }}
</li>
</ul>
A list of valid languages is available on Shiki's repository.
You may also customize syntax highlight theme in app config. Please see markdown
options for more details.
Line Highlighting in Code Blocks
Input
```js{4}
export default {
data () {
return {
msg: 'Highlighted!'
}
}
}
```
Output
export default {
data () {
return {
msg: 'Highlighted!'
}
}
}
In addition to a single line, you can also specify multiple single lines, ranges, or both:
- Line ranges: for example
{5-8}
,{3-10}
,{10-17}
- Multiple single lines: for example
{4,7,9}
- Line ranges and single lines: for example
{4,7-13,16,23-27,40}
Input
```js{1,4,6-8}
export default { // Highlighted
data () {
return {
msg: `Highlighted!
This line isn't highlighted,
but this and the next 2 are.`,
motd: 'VitePress is awesome',
lorem: 'ipsum'
}
}
}
```
Output
export default { // Highlighted
data () {
return {
msg: `Highlighted!
This line isn't highlighted,
but this and the next 2 are.`,
motd: 'VitePress is awesome',
lorem: 'ipsum',
}
}
}
Alternatively, it's possible to highlight directly in the line by using the // [!code highlight]
comment.
Input
```js
export default {
data () {
return {
msg: 'Highlighted!' // [!code highlight]
}
}
}
```
Output
export default {
data() {
return {
msg: 'Highlighted!'
}
}
}
Focus in Code Blocks
Adding the // [!code focus]
comment on a line will focus it and blur the other parts of the code.
Additionally, you can define a number of lines to focus using // [!code focus:<lines>]
.
Input
```js
export default {
data () {
return {
msg: 'Focused!' // [!code focus]
}
}
}
```
Output
export default {
data() {
return {
msg: 'Focused!'
}
}
}
Colored Diffs in Code Blocks
Adding the // [!code --]
or // [!code ++]
comments on a line will create a diff of that line, while keeping the colors of the codeblock.
Input
```js
export default {
data () {
return {
msg: 'Removed' // [!code --]
msg: 'Added' // [!code ++]
}
}
}
```
Output
export default {
data () {
return {
msg: 'Removed'
msg: 'Added'
}
}
}
Errors and Warnings in Code Blocks
Adding the // [!code warning]
or // [!code error]
comments on a line will color it accordingly.
Input
```js
export default {
data () {
return {
msg: 'Error', // [!code error]
msg: 'Warning' // [!code warning]
}
}
}
```
Output
export default {
data() {
return {
msg: 'Error',
msg: 'Warning'
}
}
}
Line Numbers
You can enable line numbers for each code blocks via config:
export default {
markdown: {
lineNumbers: true
}
}
Please see markdown
options for more details.
You can add :line-numbers
/ :no-line-numbers
mark in your fenced code blocks to override the value set in config.
You can also customize the starting line number by adding =
after :line-numbers
. For example, :line-numbers=2
means the line numbers in code blocks will start from 2
.
Input
```ts {1}
// line-numbers is disabled by default
const line2 = 'This is line 2'
const line3 = 'This is line 3'
```
```ts:line-numbers {1}
// line-numbers is enabled
const line2 = 'This is line 2'
const line3 = 'This is line 3'
```
```ts:line-numbers=2 {1}
// line-numbers is enabled and start from 2
const line3 = 'This is line 3'
const line4 = 'This is line 4'
```
Output
// line-numbers is disabled by default
const line2 = 'This is line 2'
const line3 = 'This is line 3'
// line-numbers is enabled
const line2 = 'This is line 2'
const line3 = 'This is line 3'
// line-numbers is enabled and start from 2
const line3 = 'This is line 3'
const line4 = 'This is line 4'
Import Code Snippets
You can import code snippets from existing files via following syntax:
<<< @/filepath
It also supports line highlighting:
<<< @/filepath{highlightLines}
Input
<<< @/snippets/snippet.js{2}
Code file
export default function () {
// ..
}
Output
export default function () {
// ..
}
TIP
The value of @
corresponds to the source root. By default it's the VitePress project root, unless srcDir
is configured. Alternatively, you can also import from relative paths:
<<< ../snippets/snippet.js
You can also use a VS Code region to only include the corresponding part of the code file. You can provide a custom region name after a #
following the filepath:
Input
<<< @/snippets/snippet-with-region.js#snippet{1}
Code file
// #region snippet
function foo() {
// ..
}
// #endregion snippet
export default foo
Output
function foo() {
// ..
}
You can also specify the language inside the braces ({}
) like this:
<<< @/snippets/snippet.cs{c#}
<!-- with line highlighting: -->
<<< @/snippets/snippet.cs{1,2,4-6 c#}
<!-- with line numbers: -->
<<< @/snippets/snippet.cs{1,2,4-6 c#:line-numbers}
This is helpful if source language cannot be inferred from your file extension.
Code Groups
You can group multiple code blocks like this:
Input
::: code-group
```js [config.js]
/**
* @type {import('vitepress').UserConfig}
*/
const config = {
// ...
}
export default config
```
```ts [config.ts]
import type { UserConfig } from 'vitepress'
const config: UserConfig = {
// ...
}
export default config
```
:::
Output
/**
* @type {import('vitepress').UserConfig}
*/
const config = {
// ...
}
export default config
import type { UserConfig } from 'vitepress'
const config: UserConfig = {
// ...
}
export default config
You can also import snippets in code groups:
Input
::: code-group
<!-- filename is used as title by default -->
<<< @/snippets/snippet.js
<!-- you can provide a custom one too -->
<<< @/snippets/snippet-with-region.js#snippet{1,2 ts:line-numbers} [snippet with region]
:::
Output
export default function () {
// ..
}
function foo() {
// ..
}
Markdown File Inclusion
You can include a markdown file in another markdown file, even nested.
TIP
You can also prefix the markdown path with @
, it will act as the source root. By default, it's the VitePress project root, unless srcDir
is configured.
For example, you can include a relative markdown file using this:
Input
# Docs
## Basics
<!--@include: ./parts/basics.md-->
Part file (parts/basics.md
)
Some getting started stuff.
### Configuration
Can be created using `.foorc.json`.
Equivalent code
# Docs
## Basics
Some getting started stuff.
### Configuration
Can be created using `.foorc.json`.
It also supports selecting a line range:
Input
# Docs
## Basics
<!--@include: ./parts/basics.md{3,}-->
Part file (parts/basics.md
)
Some getting started stuff.
### Configuration
Can be created using `.foorc.json`.
Equivalent code
# Docs
## Basics
### Configuration
Can be created using `.foorc.json`.
The format of the selected line range can be: {3,}
, {,10}
, {1,10}
You can also use a VS Code region to only include the corresponding part of the code file. You can provide a custom region name after a #
following the filepath:
Input
# Docs
## Basics
<!--@include: ./parts/basics.md#basic-usage{,2}-->
<!--@include: ./parts/basics.md#basic-usage{5,}-->
Part file (parts/basics.md
)
<!-- #region basic-usage -->
## Usage Line 1
## Usage Line 2
## Usage Line 3
<!-- #endregion basic-usage -->
Equivalent code
# Docs
## Basics
## Usage Line 1
## Usage Line 3
WARNING
Note that this does not throw errors if your file is not present. Hence, when using this feature make sure that the contents are being rendered as expected.
Math Equations
This is currently opt-in. To enable it, you need to install markdown-it-mathjax3
and set markdown.math
to true
in your config file:
npm add -D markdown-it-mathjax3
// .vitepress/config.ts
export default {
markdown: {
math: true
}
}
Input
When $a \ne 0$, there are two solutions to $(ax^2 + bx + c = 0)$ and they are
$$ x = {-b \pm \sqrt{b^2-4ac} \over 2a} $$
**Maxwell's equations:**
| equation | description |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------- |
| $\nabla \cdot \vec{\mathbf{B}} = 0$ | divergence of $\vec{\mathbf{B}}$ is zero |
| $\nabla \times \vec{\mathbf{E}}\, +\, \frac1c\, \frac{\partial\vec{\mathbf{B}}}{\partial t} = \vec{\mathbf{0}}$ | curl of $\vec{\mathbf{E}}$ is proportional to the rate of change of $\vec{\mathbf{B}}$ |
| $\nabla \times \vec{\mathbf{B}} -\, \frac1c\, \frac{\partial\vec{\mathbf{E}}}{\partial t} = \frac{4\pi}{c}\vec{\mathbf{j}} \nabla \cdot \vec{\mathbf{E}} = 4 \pi \rho$ | _wha?_ |
Output
When
Maxwell's equations:
equation | description |
---|---|
divergence of | |
curl of | |
wha? |
Image Lazy Loading
You can enable lazy loading for each image added via markdown by setting lazyLoading
to true
in your config file:
export default {
markdown: {
image: {
// image lazy loading is disabled by default
lazyLoading: true
}
}
}
Advanced Configuration
VitePress uses markdown-it as the Markdown renderer. A lot of the extensions above are implemented via custom plugins. You can further customize the markdown-it
instance using the markdown
option in .vitepress/config.js
:
import { defineConfig } from 'vitepress'
import markdownItAnchor from 'markdown-it-anchor'
import markdownItFoo from 'markdown-it-foo'
export default defineConfig({
markdown: {
// options for markdown-it-anchor
// https://github.com/valeriangalliat/markdown-it-anchor#usage
anchor: {
permalink: markdownItAnchor.permalink.headerLink()
},
// options for @mdit-vue/plugin-toc
// https://github.com/mdit-vue/mdit-vue/tree/main/packages/plugin-toc#options
toc: { level: [1, 2] },
config: (md) => {
// use more markdown-it plugins!
md.use(markdownItFoo)
}
}
})
See full list of configurable properties in Config Reference: App Config.