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Markdown to HTML Converter

Convert Markdown to HTML instantly

What Is a Markdown to HTML Converter?

A Markdown to HTML converter transforms plain-text Markdown formatting into standard HTML markup. Markdown was created by John Gruber in 2004 as a lightweight alternative to writing raw HTML — instead of typing <h1>Title</h1>, you simply write # Title. This converter bridges the two: you write in Markdown's readable syntax and get clean, ready-to-use HTML output.

Markdown is widely used across the web. GitHub READMEs, technical documentation (Docusaurus, MkDocs, Hugo), note-taking apps (Obsidian, Notion), and content management systems (Ghost, WordPress) all rely on Markdown as a primary authoring format. Converting it to HTML is the standard step between writing content and publishing it on the web.

This tool uses CommonMark-compatible parsing rules, which means it handles headings, emphasis, lists, links, inline code, code blocks, blockquotes, and horizontal rules consistently. Unlike some converters, it preserves any raw HTML you include in your Markdown — so you can embed custom elements, iframes, or styled divs alongside standard Markdown syntax without losing them in the conversion.

How It Works

The conversion happens entirely in your browser — your text never leaves your device. When you click Convert, the tool reads the Markdown from the input panel, applies a series of regex-based transformations, and renders the result as live HTML in the preview panel on the right.

Here's the processing order: headings are detected first (lines starting with #, ##, ###), then inline formatting like bold (**text**), italic (*text*), and inline code (`code`). Unordered list items (- item) are wrapped in <li> tags, and paragraph breaks are inserted at double newlines. Raw HTML within the Markdown passes through unchanged, so you can mix both syntaxes freely.

The Copy HTML button captures the rendered innerHTML from the preview panel and places it on your clipboard. You can then paste it directly into a CMS, email template, or static HTML file. No server processing, no API calls — everything runs client-side for speed and privacy.

Tips for Markdown to HTML Conversion

Get clean, predictable HTML output:

When to Use This Converter

This tool fills the gap between writing and publishing:

Markdown Syntax Reference

Quick reference for the most common Markdown elements and their HTML equivalents:

Markdown HTML Output Usage
# Heading 1 <h1>Heading 1</h1> Page title
## Heading 2 <h2>Heading 2</h2> Section title
**bold** <strong>bold</strong> Emphasis
*italic* <em>italic</em> Subtle emphasis
[link](url) <a href="url">link</a> Hyperlinks
`code` <code>code</code> Inline code
- item <li>item</li> Unordered list
> quote <blockquote>quote</blockquote> Blockquotes

This covers the most frequently used Markdown syntax. For a complete reference, see the Markdown Guide.

Why Choose Our Markdown to HTML Converter?

There are many ways to convert Markdown to HTML — from command-line tools like Pandoc to online converters. Here's why this tool stands out:

Markdown vs HTML: When to Use Each

Markdown and HTML serve different purposes. Here's when to use each:

Use Markdown when: You want to focus on writing without worrying about tags. It's perfect for drafting blog posts, documentation, notes, and content that will be converted to HTML later.

Use HTML when: You need precise control over layout, styling, forms, or interactive elements. HTML gives you full access to all web capabilities, but requires more typing and attention to closing tags.

Best of both worlds: This converter lets you write in Markdown's simplicity and get HTML's flexibility. Write your content in Markdown, convert it, then tweak the HTML if needed. You can even mix raw HTML into your Markdown input — the converter preserves it in the output.

Frequently Asked Questions

What Markdown syntax is supported?

Headings (#), bold (**), italic (*), lists (- or 1.), links, code blocks, blockquotes, and horizontal rules.

Can I copy the HTML output?

Yes, click "Copy HTML" to copy the raw HTML code to clipboard.

Is my data sent to a server?

No. All conversion happens in your browser. Your Markdown text is never uploaded or stored anywhere — the tool works entirely offline.

Does it support tables and task lists?

The converter supports standard CommonMark syntax including headings, emphasis, lists, links, code, and blockquotes. GitHub-extended syntax like tables and task lists are not currently supported, but you can embed raw HTML tables directly in your Markdown input.

Can I convert HTML back to Markdown?

No, this tool only converts Markdown to HTML. For HTML-to-Markdown conversion, you would need a different tool or a library like Turndown.js. The reason is that HTML has many features (forms, scripts, complex nesting) that don't have Markdown equivalents.

Does the tool preserve HTML tags in my Markdown?

Yes! This converter does not sanitize or strip raw HTML. If you include HTML tags in your Markdown input (like <div class="callout">), they will appear unchanged in the HTML output. This lets you mix Markdown's simplicity with HTML's full power.

Can I use custom CSS with the converted HTML?

The converter outputs clean HTML without inline styles. You can apply your own CSS by wrapping the output in a styled container, or by adding a <style> block. For email newsletters, you may need to inline CSS using a separate tool for maximum compatibility.

Is the output suitable for WordPress or Ghost?

Yes. The generated HTML uses standard tags (<h1>-<h6>, <p>, <strong>, <em>, <code>, <ul>, <blockquote>) that work in all major CMS platforms. Simply paste the output into the HTML view of your editor.

Markdown Flavors & GFM Support

Not all Markdown is created equal. The original specification (CommonMark) defines the core syntax: headings, paragraphs, emphasis, lists, code spans, and links. But most modern platforms extend this with their own "flavors" — added features for tables, task lists, footnotes, and more.

GitHub Flavored Markdown (GFM) is the most widely used extension set. It adds tables, task lists (- [x]), strikethrough (~~text~~), auto-linked URLs, and syntax highlighting in fenced code blocks. This tool supports all GFM features except auto-linked URLs (which you can manually create with [text](url)).

Other flavors include MultiMarkdown (footnotes, definition lists, tables), Pandoc Markdown (citations, raw TeX, custom blocks), and Kramdown (used by Jekyll). If you're writing for a specific platform, check which flavor it supports — then use this converter to transform your content into clean HTML.

Frequently Asked Questions

Does this tool support GitHub Flavored Markdown?

Yes. The converter supports tables, task lists, strikethrough, and fenced code blocks with syntax highlighting markers. These are converted to clean HTML (<table>, <ul class="task-list">, <del>, <pre><code>) that you can style with CSS.

Can I convert HTML back to Markdown?

This tool is Markdown → HTML only. For HTML → Markdown, try our HTML to Markdown converter. The two tools together cover the full round-trip conversion workflow.

How do I add custom CSS classes to the output?

You can include raw HTML with class attributes in your Markdown (e.g., <div class="highlight">content</div>), and it will pass through unchanged. For bulk styling, target the standard tags in your CSS: preview h1, preview code, etc.

Is there a file size limit?

The input is limited only by your browser's memory. For typical documents under 1MB, conversion is instant. Very large documents (10,000+ lines) may take a few seconds. There is no server-side limit because nothing is sent to a server.

Can I use this for email HTML?

Yes, the output HTML works in email clients that support standard HTML tags. Avoid complex CSS (flexbox, grid) as some email clients strip them. Use inline styles for best compatibility across email providers.

Does this support GitHub Flavored Markdown (GFM)?

This tool covers the core CommonMark specification (headings, emphasis, lists, links, code). For GFM-specific features like tables, task lists, and strikethrough, the output will include the raw text. For full GFM support, consider using a dedicated GFM parser or our Markdown Preview tool.

How do I preserve line breaks?

By default, Markdown condenses multiple line breaks into one. To force a line break, add two spaces at the end of a line or use a backslash \ before the newline. The converter respects these and outputs <br> tags accordingly.

Can I convert multiple files at once?

This tool processes one document at a time in the browser. For batch conversion, you can sequentially paste and convert multiple documents, or use a command-line tool like Pandoc for offline batch processing. Each conversion here is instant and private.

Why does my output look different in my CMS?

CMS platforms (WordPress, Ghost, Webflow) often add their own CSS styles that override or complement the converted HTML. The output from this tool is clean, semantic HTML — how it renders depends on the CSS of the target platform. Use the Copy HTML button and paste into your CMS's HTML view for best results.

Tips for Better HTML Output

Want cleaner, more semantic HTML? Here are some tips: