---
title: "How to convert Markdown to HTML | ToolSugar"
description: "Convert Markdown to clean HTML with a live preview, tables and code blocks, and learn what the sanitizer removes from raw HTML."
canonical: https://toolsugar.com/blog/how-to-convert-markdown-to-html
image: https://toolsugar.com/og.png
---

# How to convert Markdown to clean, safe HTML

Updated 2026-11-09

To convert Markdown to HTML, run it through a parser that turns each pattern into a tag. Markdown to HTML on ToolSugar does this in your browser with the marked library, then cleans the result with DOMPurify. You get the HTML source and a live preview side by side.

[Open Markdown to HTML](https://toolsugar.com/tools/markdown-to-html)

## Convert Markdown to HTML in four steps

Type or paste Markdown, or open a .md file. Both outputs update as you go.

1. Paste Markdown into the Markdown box, or open a .md file.
2. Read the sanitized HTML source in the box on the right.
3. Check the rendered Preview below.
4. Copy the HTML, or press Download to save document.html.

## What Markdown features work

The tool reads GitHub flavored Markdown. That includes tables, task lists, strikethrough and fenced code blocks. A line that starts with # becomes a heading, and a dash at the start of a line becomes a list item.

Use the preview to check the layout before you paste the HTML into a CMS or an email template.

## What the sanitizer removes

Markdown allows raw HTML inside the text. DOMPurify strips anything that could run code, such as script tags, onerror style handlers and javascript: links. Style tags are dropped too. Safe tags like b, a and img stay.

The preview is drawn only from the sanitized HTML, so what you see is what you copy.

## Is the output safe for a public site

Cleaning removes the common injection routes. If your site accepts Markdown from visitors, sanitize it on your server as well, because a browser tool cannot protect a page it does not control.

## Questions

### Why did my inline HTML vanish?

The sanitizer removed a tag or attribute that could run code. Rewrite that part with plain Markdown or a safe tag.

### Does it add a full page with head and body?

No. You get the HTML for the content only, which you can place inside your own page template.

### Can I turn the HTML back into Markdown?

Yes. The HTML to Markdown tool does the reverse, though layout styling is dropped on the way back.

[Open Markdown to HTML](https://toolsugar.com/tools/markdown-to-html)

## Related guides

- [How to convert HTML to Markdown](https://toolsugar.com/blog/how-to-convert-html-to-markdown)
- [How to format JSON online](https://toolsugar.com/blog/how-to-format-json)
- [How to convert XML to JSON](https://toolsugar.com/blog/how-to-convert-xml-to-json)
- [How to format SQL queries](https://toolsugar.com/blog/how-to-format-sql)