Syncfusion ASP.NET MVC Markdown Converter

The Syncfusion ASP.NET MVC Markdown Converter is a lightweight client-side utility (included with the Syncfusion.EJ2.MVC5 NuGet package) that transforms Markdown text into clean, semantic HTML. It supports all common Markdown elements — headings, lists, tables, links, images, and inline styles — and integrates seamlessly with the Syncfusion Rich Text Editor for live editing and preview workflows in ASP.NET MVC applications.

Navigation Guide

Getting Started

📄 Read: [references/getting-started.md](references/getting-started.md)

• Installing the Syncfusion.EJ2.MVC5 NuGet package
• Referencing EJ2 scripts and styles in _Layout.cshtml
• Running a basic Markdown-to-HTML conversion via JavaScript
• Required CSS and theme setup

toHtml API

📄 Read: [references/tohtml-api.md](references/tohtml-api.md)

• ej.markdownConverter.toHtml method signature and parameters
• Supported Markdown elements (headings, lists, tables, links, images, inline styles)
• Return value and usage patterns
• Simple conversion code examples in Razor/JavaScript

Configurable Options

📄 Read: [references/configurable-options.md](references/configurable-options.md)

• MarkdownConverterOptions configuration object
• async — asynchronous conversion for large content
• gfm — GitHub Flavored Markdown support
• lineBreak — single line breaks as <br> elements
• silence — suppress errors on invalid Markdown
• When and why to use each option

Rich Text Editor Integration

📄 Read: [references/richtexteditor-integration.md](references/richtexteditor-integration.md)

• Combining the Syncfusion RTE with the Markdown Converter in ASP.NET MVC
• Setting EditorMode(EditorMode.Markdown) on the RTE HTML helper
• Live preview on keyup using ej.markdownConverter.toHtml
• Full preview toggle pattern
• Side-by-side Splitter layout in Razor views
• Toolbar configuration for Markdown mode

Quick Start

Add the NuGet package and run a minimal conversion in a Razor view:

NuGet Package Manager Console:

Install-Package Syncfusion.EJ2.MVC5

Controller (HomeController.cs):

public ActionResult Index()
{
    ViewBag.value = "# Hello World\nThis is **Markdown** text.";
    return View();
}

View (Index.cshtml):

@(Html.EJS().RichTextEditor("editor")
    .EditorMode(Syncfusion.EJ2.RichTextEditor.EditorMode.Markdown)
    .Value(ViewBag.value)
    .Render())

<div id="preview"></div>

<script>
    document.addEventListener('DOMContentLoaded', function () {
        var markdownContent = '# Hello World\nThis is **Markdown** text.';
        var htmlOutput = ej.markdownConverter.toHtml(markdownContent);
        document.getElementById('preview').innerHTML = htmlOutput;
    });
</script>

Common Patterns

Convert with all options enabled

var html = ej.markdownConverter.toHtml(markdownContent, {
    async: true,      // Non-blocking for large content
    gfm: true,        // GitHub Flavored Markdown
    lineBreak: true,  // Treat single newlines as <br>
    silence: true     // Suppress parse errors
});

Live preview on user input

document.getElementById('markdownInput').addEventListener('keyup', function () {
    document.getElementById('preview').innerHTML =
        ej.markdownConverter.toHtml(this.value);
});

Integrate with Syncfusion RTE in Markdown mode

Controller:

public ActionResult Index()
{
    ViewBag.value = "# Hello\nType **Markdown** here.";
    return View();
}

View (Index.cshtml):

@using Syncfusion.EJ2.RichTextEditor

@(Html.EJS().RichTextEditor("editor")
    .EditorMode(EditorMode.Markdown)
    .Height("400px")
    .Value(ViewBag.value)
    .Render())

Key Options

Common Use Cases

• Static content rendering — Convert user-authored Markdown from a textarea or API into HTML for display within an MVC view
• Live editor preview — Pair with Syncfusion RTE in Markdown mode for real-time HTML preview in a Razor view
• Side-by-side editing — Use Syncfusion Splitter to show editor and rendered HTML simultaneously in a Razor layout
• CMS / documentation tools — Process Markdown stored in databases or files and render it inside ASP.NET MVC views