Markdown to HTML Converter
Convert Markdown to HTML with a live preview and a copyable HTML source. Runs fully in your browser.
Type Markdown above. The preview and HTML source update as you type.
What this tool does
Converts Markdown into HTML and shows the result two ways at once: a rendered preview so you can see how the content looks, and an HTML source pane with the exact markup you can copy and paste elsewhere. It handles the common Markdown constructs: headings, bold and italic, links, images, ordered and unordered lists, blockquotes, inline code, fenced code blocks, horizontal rules, tables, strikethrough, and task-list checkboxes. Everything runs locally: the preview renders your own Markdown right in your browser, and nothing you type is uploaded anywhere.
How to use it
Type or paste Markdown into the input on the left. The preview and the HTML source
update live as you type. Use the view toggle to show the preview, the HTML source,
or both side by side, then press Copy HTML to grab the generated
markup. For example, # Hi becomes <h1>Hi</h1>, and
**bold** becomes <strong>bold</strong>.
Common use cases
- Pasting formatted content into a CMS, blog editor, or email template that accepts raw HTML.
- Turning a Markdown README or notes file into HTML for a static page.
- Previewing how a Markdown document will render before publishing it.
- Generating HTML snippets for documentation, changelogs, or knowledge-base articles.
- Learning how Markdown maps to HTML by watching the source pane update as you type.
Common pitfalls
- Untrusted Markdown needs sanitizing. Markdown can contain raw
HTML, including
<script>tags. This tool renders the full, faithful HTML and does not strip anything. If the Markdown came from someone you do not trust, run the output through an HTML sanitizer (for example DOMPurify) before inserting it into a real page, or you risk cross-site scripting. - The preview uses this page's styles. How the preview looks depends on the base stylesheet here, not on your target site. The HTML structure is what matters; the final appearance comes from the CSS where you paste it.
- Whitespace is significant. Markdown needs a blank line between block elements, and four leading spaces turn a line into a code block. If a list or heading does not render as expected, check the surrounding blank lines and indentation.
Frequently asked questions
- What does the Markdown to HTML converter do?
- It turns Markdown text into clean HTML. You type or paste Markdown on the left and see two things update live: a rendered preview and the raw HTML source. The HTML source is the exact markup you can copy into a web page, a CMS, an email template, or anywhere else that accepts HTML.
- Is my Markdown uploaded to a server?
- No. The conversion runs entirely in your browser using a bundled Markdown parser. Nothing you type leaves your machine, so it is safe for private notes, internal docs, or draft content. You can confirm this by opening your browser DevTools and watching the Network tab: there are zero requests while you type.
- Which Markdown features are supported?
- Standard CommonMark plus GitHub Flavored Markdown: headings, bold and italic, ordered and unordered lists, links, images, blockquotes, inline code, fenced code blocks, horizontal rules, tables, strikethrough, and task-list checkboxes. The parser follows the CommonMark specification for the core syntax.
- Is the generated HTML safe to publish?
- HTML you convert from your own Markdown is as safe as your own content. If you convert Markdown from an untrusted third party, treat the output as untrusted: Markdown can embed raw HTML, so run the result through an HTML sanitizer before inserting it into a page. This tool intentionally does not strip anything, so what you see is the full, faithful HTML.
- How do I copy just the HTML and not the preview?
- Use the Copy HTML button above the source pane. It copies the raw HTML text to your clipboard. The preview pane is only a visual rendering, so you never need to copy from it. Switch the view to HTML source only if you want to read or edit the markup on its own.
- Why does the preview look plainer than GitHub or my own site?
- The preview uses the base styles of this page, not the CSS of your target site. The HTML structure is correct; how it renders depends on the stylesheet where you paste it. To match a specific site, copy the HTML into that site and let its own CSS style it.
Cite this tool
For academic, journalistic, or technical references. Pick a format:
Citations use 2026 as the publication year. Access date is left as a fillable placeholder where the citation style expects one.