My list rendered as a paragraph.

It needs a blank line before it. Without one, most renderers treat the list items as a continuation of the preceding paragraph. The same rule applies to headings and block quotes.

Which flavour of Markdown is this?

The GitHub-flavoured set, which adds tables, strikethrough, task lists and automatic links to the original specification. That is what most platforms now implement, though a strictly original renderer will not understand the additions.

Why did my underscores not produce italics?

Underscores inside a word are ignored in most dialects, precisely so that snake_case identifiers survive. Use asterisks for emphasis mid-word.

Is the HTML safe to insert directly?

Only if you trust the Markdown. Raw HTML passes through by design, so a script tag written in the source is a script tag in the output. Sanitise anything that came from a user before rendering it.

Markdown to HTML

Render Markdown into clean HTML you can paste anywhere.

Everything runs inside your browser. Your files never leave your device.

Input

Result

The result appears here as you type.

Ask about Markdown to HTML

Questions about what this tool does, which option to pick, or what it can and cannot handle.

The question you type here is sent to an AI provider to be answered — your files and whatever you put in the tool above are not, and the assistant cannot see them. Answers are generated and can be wrong. The tool itself is not guessing: it runs deterministic code on your device.

About the Markdown to HTML

Markdown exists so that text can be written as text and rendered as markup. Converting it to HTML is what every static site generator, documentation tool and content platform does behind the scenes; this does it visibly, so you can see exactly what your Markdown produces.

The output is clean semantic HTML — headings, paragraphs, lists, links, emphasis, code blocks, block quotes and tables — with no wrapper divs, no framework classes and nothing to strip out afterwards. That makes it suitable for pasting into a CMS, an email template or a page you are hand-writing.

The most useful thing this reveals is what your Markdown actually says, which is not always what you meant. A list that needs a blank line before it renders as a paragraph without one. Indenting four spaces turns a line into a code block. A single asterisk produces italics where two produce bold, and an underscore inside a word does nothing at all in most dialects, which is why file_name_here survives unchanged where you might have expected italics.

Dialects differ, and it is worth knowing which one you are writing for. Tables, strikethrough, task lists and automatic links come from GitHub Flavored Markdown rather than the original specification, and a renderer that only implements the original will pass them through as literal text. This tool implements the common GitHub-flavoured set, which is what most platforms now expect.

Raw HTML inside Markdown passes through untouched, as the format intends. That is convenient and it is also the reason Markdown from an untrusted source must be sanitised before rendering: a script tag written in a comment field is still a script tag after conversion.

How to use it

1Paste or type your Markdown into the input.
2Read the HTML output, and the preview alongside it.
3Check anything that did not render as expected — a missing blank line before a list is the usual cause.
4Copy the HTML. It carries no wrapper elements or classes, so it drops into an existing page cleanly.

Questions

My list rendered as a paragraph.: It needs a blank line before it. Without one, most renderers treat the list items as a continuation of the preceding paragraph. The same rule applies to headings and block quotes.
Which flavour of Markdown is this?: The GitHub-flavoured set, which adds tables, strikethrough, task lists and automatic links to the original specification. That is what most platforms now implement, though a strictly original renderer will not understand the additions.
Why did my underscores not produce italics?: Underscores inside a word are ignored in most dialects, precisely so that snake_case identifiers survive. Use asterisks for emphasis mid-word.
Is the HTML safe to insert directly?: Only if you trust the Markdown. Raw HTML passes through by design, so a script tag written in the source is a script tag in the output. Sanitise anything that came from a user before rendering it.