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React Markdown Preview

React component preview markdown text in web browser. The minimal amount of CSS to replicate the GitHub Markdown style. The current document website is converted using this react component.

Quick Start

$ npm install @uiw/react-markdown-preview --save

Usage Example

import MarkdownPreview from '@uiw/react-markdown-preview';

const source = `
## MarkdownPreview

> todo: React component preview markdown text.

function Demo() {
  return (
    <MarkdownPreview source={source} />

Options Props

import { ReactMarkdownProps } from 'react-markdown';

interface IMarkdownPreviewProps extends Omit<ReactMarkdownProps, 'className'> {
  prefixCls?: string;
  className?: string;
  style?: React.CSSProperties;
  onScroll?: (e: React.UIEvent<HTMLDivElement>) => void;
  onMouseOver?: (e: React.MouseEvent<HTMLDivElement>) => void;

This ReactMarkdownProps details.

  • source or children - string The Markdown source to parse (required)
  • className - string Class name of the container element. If none is passed, a container will not be rendered.
  • escapeHtml - boolean Setting to false will cause HTML to be rendered (see notes below about proper HTML support). Be aware that setting this to false might cause security issues if the input is user-generated. Use at your own risk. (default: true).
  • skipHtml - boolean Setting to true will skip inlined and blocks of HTML (default: false).
  • sourcePos - boolean Setting to true will add data-sourcepos attributes to all elements, indicating where in the markdown source they were rendered from (default: false).
  • rawSourcePos - boolean Setting to true will pass a sourcePosition property to all renderers with structured source position information (default: false).
  • includeNodeIndex - boolean Setting to true will pass index and parentChildCount props to all renderers (default: false).
  • allowedTypes - array Defines which types of nodes should be allowed (rendered). (default: all types).
  • disallowedTypes - array Defines which types of nodes should be disallowed (not rendered). (default: none).
  • unwrapDisallowed - boolean Setting to true will try to extract/unwrap the children of disallowed nodes. For instance, if disallowing Strong, the default behaviour is to simply skip the text within the strong altogether, while the behaviour some might want is to simply have the text returned without the strong wrapping it. (default: false)
  • allowNode - function Function execute if in order to determine if the node should be allowed. Ran prior to checking allowedTypes/disallowedTypes. Returning a truthy value will allow the node to be included. Note that if this function returns true and the type is not in allowedTypes (or specified as a disallowedType), it won't be included. The function will receive three arguments argument (node, index, parent), where node contains different properties depending on the node type.
  • linkTarget - function|string Sets the default target attribute for links. If a function is provided, it will be called with url, text, and title and should return a string (e.g. _blank for a new tab). Default is undefined (no target attribute).
  • transformLinkUri - function|null Function that gets called for each encountered link with a single argument - uri. The returned value is used in place of the original. The default link URI transformer acts as an XSS-filter, neutralizing things like javascript:, vbscript: and file: protocols. If you specify a custom function, this default filter won't be called, but you can access it as require('react-markdown').uriTransformer. If you want to disable the default transformer, pass null to this option.
  • transformImageUri - function|null Function that gets called for each encountered image with a single argument - uri. The returned value is used in place of the original.
  • renderers - object An object where the keys represent the node type and the value is a React component. The object is merged with the default renderers. The props passed to the component varies based on the type of node.

See Options Props for more details.


Runs the project in development mode.

# Step 1, run first, listen to the component compile and output the .js file
npm run ts:watch
# Step 2, listen for compilation output type .d.ts file
npm run types:watch
# Step 3, development mode, listen to compile preview website instance
npm run doc:dev

Builds the app for production to the build folder.

npm run released

The build is minified and the filenames include the hashes. Your app is ready to be deployed!


Licensed under the MIT License.

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