Implementing Syncfusion React Markdown Converter

The Syncfusion Markdown Converter is a lightweight utility that transforms Markdown-formatted text into clean, semantic HTML. It is typically used alongside the Syncfusion React Rich Text Editor (RichTextEditorComponent) in Markdown editing mode to provide a live preview of rendered content.

When to Use This Skill

• Convert Markdown text to HTML in a React application
• Display a live preview of Markdown content as the user types
• Configure conversion behavior (GFM support, line breaks, async mode, error suppression)
• Build a Markdown editor with HTML preview using RichTextEditorComponent in Markdown mode
• Integrate MarkdownConverter.toHtml() with the Syncfusion React Rich Text Editor

Documentation and Navigation Guide

Getting Started

• React setup and project creation (Vite / CRA)
• Installing @syncfusion/ej2-markdown-converter and @syncfusion/ej2-react-richtexteditor
• CSS imports for the material3 theme
• Module injection (MarkdownEditor, Toolbar, Image, Link, Table)
• Running the application

Convert Markdown to HTML — toHtml API

• MarkdownConverter.toHtml() method signature
• Basic usage example (standalone, no editor required)
• Supported Markdown elements (headings, lists, tables, links, images, inline styles)
• Using the return value with dangerouslySetInnerHTML

Configurable Options

• MarkdownConverterOptions interface
• async — asynchronous conversion for large content
• gfm — GitHub Flavored Markdown support (default: true)
• lineBreak — convert single line breaks to <br> (default: false)
• silence — suppress errors on invalid Markdown (default: false)
• Full example passing options to toHtml()

Rich Text Editor Integration

• Markdown mode with editorMode="Markdown"
• Live preview using created, change, and actionComplete events
• Toolbar configuration for Markdown editing
• MarkdownFormatter for custom Markdown syntax
• Custom preview toggle button (full preview pattern)
• Full working example with preview toggle

Quick Start

Install packages and wire up the converter in three steps:

1. Install packages:

npm install @syncfusion/ej2-markdown-converter
npm install @syncfusion/ej2-react-richtexteditor

2. Import CSS in src/styles.css:

@import '../node_modules/@syncfusion/ej2-base/styles/material3.css';
@import '../node_modules/@syncfusion/ej2-richtexteditor/styles/material3.css';

3. Convert Markdown to HTML:

import { MarkdownConverter } from '@syncfusion/ej2-markdown-converter';

const markdown = '# Hello World\nThis is **Markdown** text.';
const html = MarkdownConverter.toHtml(markdown);
console.log(html);
// Output: <h1>Hello World</h1><p>This is <strong>Markdown</strong> text.</p>

Common Patterns

Pattern 1: Standalone Conversion (No Editor)

When you only need to convert a Markdown string to HTML without an editor UI:

import { MarkdownConverter } from '@syncfusion/ej2-markdown-converter';

const html = MarkdownConverter.toHtml(markdownString);
document.getElementById('preview')!.innerHTML = html as string;

Pattern 2: Live Preview on Keyup

Convert on every keystroke inside a Rich Text Editor textarea:

const markdownConversion = () => {
  if (mdsource?.classList.contains('e-active')) {
    const htmlPreview = rteObj.element.querySelector('#' + rteObj.getID() + 'html-view') as HTMLElement;
    htmlPreview.innerHTML = MarkdownConverter.toHtml(
      (rteObj.contentModule.getEditPanel() as HTMLTextAreaElement).value
    ) as string;
  }
};

Pattern 3: Conversion with Options

Disable GFM and enable line-break conversion:

const html = MarkdownConverter.toHtml(markdownString, {
  gfm: false,
  lineBreak: true
});

Pattern 4: Side-by-Side Preview with Splitter

For a full editor + preview experience, use the Syncfusion Splitter component alongside the Rich Text Editor in Markdown mode. The preview pane is updated via updateValue() on every change event. 📄 Read: references/richtexteditor-integration.md for the full implementation.

Key Props / API

API	Type	Default	Purpose
MarkdownConverter.toHtml(content, options?)	static method	—	Converts Markdown string to HTML
options.async	boolean	false	Async conversion for large content
options.gfm	boolean	true	GitHub Flavored Markdown support
options.lineBreak	boolean	false	Single line breaks → <br>
options.silence	boolean	false	Suppress errors on invalid Markdown