Markdown to HTML
Markdown to HTML Converter
Paste Markdown or drop a .md file — get clean, GFM-accurate HTML instantly. Nothing is uploaded.
- Runs in your browser
- Nothing uploaded
- No sign-up
- Free, no daily limits
- 1Add your file
- 2Choose settings
- 3Download
100% Private: conversion runs entirely in your browser. Your Markdown never leaves your device — nothing is uploaded, stored, or logged.
Convert Markdown to HTML Online: Free and Private
Markdown to HTML is a free in-browser converter that translates Markdown text into clean, sanitized HTML with live rendered preview and full GitHub Flavored Markdown support. Paste Markdown or drop a .md file up to 25 MB. Tables, task lists, and syntax-colored code blocks compile locally. Export clean snippets, copy rich text for email, or generate complete HTML5 documents with embedded CSS themes without sending documents to external servers.
Real Conversion Sample: GFM Tables, Task Lists, and Anchors
Here is how technical Markdown translates into HTML elements. Notice how pipe tables format into semantic table tags, checkboxes become inputs, and headings gain GitHub anchor IDs:
# Release Notes v2.4 | Task ID | Component | Status | | :--- | :--- | :--- | | ENG-401 | Parser core | Released | ### Action items - [x] Neutralize formula triggers - [ ] Audit client memory ```typescript const status = "ok"; ```
<h1 id="release-notes-v24">Release Notes v2.4</h1>
<table>
<thead>
<tr>
<th align="left">Task ID</th>
<th align="left">Component</th>
<th align="left">Status</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">ENG-401</td>
<td align="left">Parser core</td>
<td align="left">Released</td>
</tr>
</tbody>
</table>
<h3 id="action-items">Action items</h3>
<ul>
<li><input type="checkbox" checked="" disabled=""> Neutralize formula triggers</li>
<li><input type="checkbox" disabled=""> Audit client memory</li>
</ul>
<pre><code class="language-typescript">const status = "ok";</code></pre>Edge Cases We Handle (And How)
| Input Quirk | What Our Parser Does | Code Location & Rule |
|---|---|---|
| Malicious scripts & event handlers | Sanitized by DOMPurify before preview or export; strips script, iframe, and inline onload/onerror handlers. | MarkdownToHtmlClient.tsx:155-158 |
| Single line breaks | Follows CommonMark standard (soft wrap rendered as space) unless 'Newline = line break' toggle is active. | lib/markdown-convert.ts:24-40 |
| GitHub pipe tables | Marked parses pipe tables into semantic thead, tbody, th, and td elements with column alignment attributes. | lib/markdown-convert.ts:40 (gfm: true) |
| Heading anchor links | marked-gfm-heading-id assigns deterministic, URL-safe id attributes to h1 through h6 headings. | lib/markdown-convert.ts:41 |
| Task list checkboxes (- [x]) | Renders native disabled checkbox inputs matching GitHub issue and pull request styling. | lib/markdown-convert.ts:92 |
| Standalone document export | Wraps HTML in complete HTML5 boilerplate with metadata and embeds GitHub, Minimal, or Dark CSS themes. | lib/markdown-convert.ts:58-74 |
How to Convert Markdown to HTML Step-by-Step
Add Markdown Syntax
Paste text or drop a .md, .markdown, or .txt file up to 25 MB into the editor.
Inspect Live Preview
The rendered document and raw HTML source update synchronously on every keystroke.
Choose Output Format
Export a raw HTML snippet or a standalone HTML5 document with GitHub, Minimal, or Dark styling.
Copy or Download
Copy HTML code, copy formatted rich text for email, or download the styled .html file.
Key Capabilities of TryDocsy's Markdown to HTML Tool
Side-by-Side Live Preview
Inspect formatted typography or examine the raw HTML source code side by side in real time.
Full GFM Specification
Pipe tables, task list checkboxes, strikethrough, autolinks, and anchor IDs matching GitHub.
Syntax Highlighting
Fenced code blocks retain their language identifier and render with syntax highlighting in preview mode.
Standalone HTML5 Export
Wraps output in valid HTML5 with doctype, head, title, and your choice of embedded CSS theme.
Multi-MIME Rich Text Copy
Paste formatted output directly into Gmail, Word, Google Docs, or Notion with styles intact.
DOMPurify Sanitization
Client-side DOMPurify filters scripts and malicious attributes before rendering or downloading.
When Not to Use This Web Tool
This browser converter is designed for files up to 25 MB. For converting hundreds of documentation pages across large git repositories or compiling full books with custom cross-references, use command-line static site generators like Astro, Hugo, or Pandoc (pandoc -f gfm -t html5 input.md -o output.html).
Frequently Asked Questions
How do I convert a Markdown file to HTML in my browser?
Paste your Markdown text or drop a .md file into the left panel. The tool compiles your syntax into HTML with a live side-by-side preview. You can copy the HTML code, copy formatted rich text for Gmail or Docs, or download a complete .html document.
Is the generated HTML safe to embed in my website or blog?
Yes. With 'Sanitize output' enabled (active by default), client-side DOMPurify filters the compiled markup. It strips script tags, iframes, object elements, inline event handlers (like onerror and onclick), and javascript: URIs before rendering or exporting.
Does this converter support GitHub Flavored Markdown (GFM)?
Yes. The parser supports the full GFM specification. Pipe tables, task list checkboxes, strikethrough, autolinks, and fenced code blocks with language identifiers compile cleanly into semantic HTML5 elements.
How do I copy rich formatted text into Gmail or Google Docs?
Click 'Copy rich text' above the output panel. The tool writes a multi-MIME payload (text/html and text/plain) to your system clipboard via the Clipboard API. When you paste into Gmail, Word, Google Docs, or Notion, formatted headings, tables, links, and code blocks retain visual styling.
Can I download a complete HTML5 document with CSS styling?
Yes. Toggle 'Full HTML document' to wrap the output in a valid HTML5 boilerplate including doctype, head, title, and viewport tags. You can select embedded CSS themes (GitHub, Minimal, or Dark) so the downloaded page renders styled without external stylesheets.
What is the maximum file size supported?
The tool processes Markdown files up to 25 MB directly in browser memory. For automated documentation pipelines or publishing book manuscripts from Markdown, command-line tools like Pandoc provide batch conversion.