Which Markdown flavor does the converter use?

Most converters support CommonMark (the official spec) plus GitHub Flavored Markdown (GFM) extensions: tables, task lists (- [ ]), strikethrough (~~text~~), autolinks, and fenced code blocks with syntax highlighting. Some support additional features like footnotes, definition lists, or math (LaTeX) rendering.

Does it support tables?

Yes, GFM-style tables: |Col1|Col2|\n|---|---|\n|val1|val2|. The converter produces standard HTML with , , , , . Alignment markers (|:---:|) are converted to text-align CSS or HTML align attributes.

What about code blocks with syntax highlighting?

Fenced code blocks (```language) are converted to . The HTML output uses class names compatible with Prism.js, highlight.js, or other syntax highlighting libraries — the actual coloring requires loading those JS/CSS libraries on your page.

Are inline HTML elements preserved?

Yes. CommonMark allows raw HTML in Markdown documents (like Ctrl for keyboard keys). The converter passes these through unchanged. Use carefully — raw HTML can introduce XSS if your Markdown comes from untrusted sources; sanitize before rendering.

What about emoji and special characters?

Most converters preserve Unicode emoji and special characters as-is. GFM-style emoji shortcodes (:smile:) are converted to actual emoji in some implementations. Standard CommonMark doesn't include emoji shortcodes — check your converter's options.

Will it sanitize HTML for XSS protection?

Most converters don't sanitize by default — if your Markdown contains tags, they'll be in the HTML output. For user-submitted Markdown, run the HTML through a sanitizer (DOMPurify, sanitize-html) before rendering. The converter is just the format transformation step; security is your responsibility downstream.

Is the data sent to a server?

No. All conversion happens in your browser using a JavaScript Markdown parser (typically marked, markdown-it, or showdown). Your text never leaves your device — safe for confidential drafts, internal documentation, or any sensitive content.

Markdown to HTML

Convert Markdown to HTML online with live preview. Free Markdown to HTML converter supporting tables, code blocks, and lists.

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HTML to Markdown

Markdown Input

Preview

Supported Markdown Syntax

Text Formatting

**bold** or __bold__
*italic* or _italic_
~~strikethrough~~
`inline code`

Structure

# Heading 1 to ###### Heading 6
[link text](url)
![alt](image url)
> blockquote

How to Use Markdown to HTML

Paste your Markdown

Paste your Markdown text into the input editor. CommonMark plus GitHub Flavored Markdown (tables, task lists, fenced code blocks) are supported.

View HTML output

The HTML preview appears instantly with proper structure: headings, paragraphs, lists, links, code blocks, and tables. Inline HTML in Markdown is preserved.

Configure options

Toggle GFM extensions (tables, task lists, autolinks), syntax highlighting class names, and HTML escaping for security.

Copy or download

Click Copy to use the HTML elsewhere, or Download as .html file. Sanitize before rendering user-submitted Markdown to prevent XSS.

When to Use Markdown to HTML

Converting blog posts and documentation

Most modern writing happens in Markdown (GitHub README, Notion, Obsidian, Hugo, Jekyll). Converting to HTML lets you publish on any web platform — embed in custom sites, send via email, or paste into CMSes that don't support Markdown directly.

Email template generation

Many email marketing platforms accept HTML but not Markdown. Write your campaigns in Markdown for ease of editing and version control, then convert to HTML for sending. Combined with inlining tools (juice, premailer), you can produce email-client-compatible HTML from Markdown source.

Static site generation pipelines

Static site generators (Hugo, Jekyll, Eleventy, Astro) consume Markdown and output HTML. Understanding the Markdown→HTML conversion lets you debug rendering issues, customize the output, or write your own static site processor.

API responses and rich text storage

Some APIs return Markdown content (Stripe blog API, GitHub API, Stack Exchange API) that needs to be rendered as HTML in your UI. Convert client-side or server-side depending on caching strategy and security requirements.

Markdown to HTML Examples

Basic formatting

Input

# Title\n\nThis is **bold** and *italic*.\n\n[Link](https://example.com)

Output

<h1>Title</h1>\n<p>This is <strong>bold</strong> and <em>italic</em>.</p>\n<p><a href="https://example.com">Link</a></p>

Markdown headings become <h1>-<h6>. Bold ** becomes <strong>; italic * becomes <em>. Links [text](url) become <a href> with proper escaping. The output is semantic HTML following best practices.

Code blocks with syntax highlighting class

Input

```javascript\nconst x = 42;\n```

Output

<pre><code class="language-javascript">const x = 42;\n</code></pre>

Fenced code blocks (```language) produce <pre><code> with class names compatible with Prism.js or highlight.js. Loading a syntax highlighter library on the rendered page completes the colored output.

GFM tables

Input

| Name | Age |\n|------|-----|\n| Alice | 30 |

Output

<table>\n<thead>\n<tr><th>Name</th><th>Age</th></tr>\n</thead>\n<tbody>\n<tr><td>Alice</td><td>30</td></tr>\n</tbody>\n</table>

GitHub Flavored Markdown tables produce semantic HTML with <thead> and <tbody>. Apply CSS for styling. Alignment markers (|:---:|, |---:|) translate to align attributes or text-align CSS.

Tips & Best Practices for Markdown to HTML

1.Always sanitize HTML output if your Markdown comes from untrusted sources (user input). Markdown allows raw HTML inline; <script> tags pass through and create XSS vulnerabilities. Use DOMPurify or sanitize-html.
2.For static sites, convert Markdown at build time, not request time. Build-time conversion produces fully-rendered HTML that's instant to serve. Request-time conversion adds latency without benefit.
3.Use a consistent Markdown flavor across your project. CommonMark is the spec; GFM extends it. Switching between flavors mid-project leads to inconsistent rendering of the same source.
4.For code highlighting, choose Prism.js (smaller, faster) or highlight.js (more languages out-of-box). Both work with the converter's class-name output. Load highlighter CSS for color themes.
5.Markdown-it is the most extensible converter; marked is fastest; showdown has good GFM support. Pick based on your needs — extensibility, speed, or feature compatibility.
6.Test your converted output across browsers. Most HTML works everywhere, but specific elements (details/summary, dialog, anchor links to non-IDed elements) have older-browser quirks worth verifying.

Frequently Asked Questions

Markdown is a lightweight text-formatting syntax created by John Gruber in 2004. It uses simple characters (# for headings, ** for bold, * for italic, [text](url) for links) to format text. Used in GitHub README files, Stack Overflow posts, blog platforms, documentation tools, and many writing apps. Markdown converts to HTML for display.

Markdown to HTML

Supported Markdown Syntax

Text Formatting

Structure

How to Use Markdown to HTML

Paste your Markdown

View HTML output

Configure options

Copy or download

When to Use Markdown to HTML

Converting blog posts and documentation

Email template generation

Static site generation pipelines

API responses and rich text storage

Markdown to HTML Examples

Basic formatting

Code blocks with syntax highlighting class

GFM tables

Tips & Best Practices for Markdown to HTML

Frequently Asked Questions

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