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Markdown to HTML

Create complete HTML locally, ready to preview, copy, and download

Exports a complete HTML document with clean base styles, ready to copy or download.

Markdown

Supports headings, lists, tables, quotes, links, and code blocks0 characters

HTML code

Waiting for Markdown

Enter Markdown to see the formatted document on the right.

About this tool

Markdown to HTML parses headings, paragraphs, lists, links, quotations, code, and tables into web elements. Output can feed a blog, email template, or content system, while visual appearance remains controlled by CSS in the destination.

HTML can contain executable or dangerous structures. Strictly sanitize converted untrusted Markdown before inserting it into a site, especially raw HTML, URL schemes, image sources, and event attributes. Generated output is not automatically safe to publish.

How to use it

  1. Enter and validate Markdown

    Confirm links, images, code fences, and heading structure are complete.

  2. Generate and preview HTML

    Inspect semantic elements and actual rendering rather than only the source string.

  3. Sanitize in the publishing system

    Apply an allowed tag and attribute policy before destination styling.

Input and output example

The output is semantic structural markup with no theme styles inlined, so your own CSS applies cleanly.

Markdown
## Install

Run `npm install`, then:

- Start the dev server
- Open localhost:3000
HTML
<h2>Install</h2>
<p>Run <code>npm install</code>, then:</p>
<ul>
  <li>Start the dev server</li>
  <li>Open localhost:3000</li>
</ul>

Supported range and limits

Output
A complete HTML document you can preview, copy or download
Supported syntax
The common Markdown set, including tables, code blocks, task lists and links
Inline HTML
Raw HTML tags in the Markdown are passed through unchanged; sanitise yourself when the source is untrusted
Styling
Structured HTML with no theme styles inlined, so your own CSS applies cleanly
vs Markdown to PDF
HTML stays editable and restyleable; PDF is a final fixed layout
Typical use
Pasting into a CMS or an email template, or as the body fragment of a static page

When you would use it

  • Migrating blog content

    Convert Markdown body content into HTML accepted by a content system.

  • Creating an email or document fragment

    Generate base semantic structure and adapt it to target platform limits.

  • Publishing technical notes into an HTML-only system

    Rich-text editors in internal wikis and ticketing systems usually accept only HTML, and the conversion preserves headings, lists and code blocks on paste.

What to know before you start

  • Conversion does not automatically provide a complete page `head`, CSS, or responsive layout.
  • Untrusted output needs a mature HTML sanitizer; removing only `<script>` is insufficient.
  • Relative links and image paths resolve from the final HTML location.

Related concepts

semantic HTML
HTML elements such as headings, paragraphs, lists, and code that express content structure.
sanitization
Security processing that removes dangerous tags, attributes, and URLs according to an explicit policy.

Frequently asked questions

Is the exported HTML a complete file?
Yes. It includes a doctype, title, responsive viewport, and clean article styles, so it can be opened directly in a browser.
Will raw HTML inside Markdown execute?
No. Raw HTML is escaped, unsafe link protocols are removed, and the preview runs in a restricted environment.
Why does the HTML have no styling?
Deliberately. The output is semantic structural markup with no theme styles inlined, so your own CSS applies cleanly. For a standalone page, add a style block or link a stylesheet yourself.
What happens to HTML tags written inside the Markdown?
They pass through unchanged. The Markdown spec permits inline HTML and no filtering is applied. If the source came from user input or another untrusted origin, you must sanitise against XSS before publishing; the converter does not do that for you.

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