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Markdown to HTML

Convert the Markdown you use every day (headings, emphasis, code, links, images and bullet lists) to clean HTML in your browser. It covers a subset of Markdown, not full CommonMark.

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Quick answer

Paste Markdown and get HTML: it converts headings, bold and italic, inline and fenced code, links, images and bullet lists into their HTML tags, live as you type. It is a lightweight converter for quick jobs, not a full CommonMark parser, so tables, blockquotes and nested lists aren't covered. The conversion happens in your browser.

What the Markdown to HTML does

Paste Markdown and the matching HTML appears, ready to copy or download as output.html. It opens on a small example and re-renders on every keystroke, so you can watch the tags take shape.

Markdown is the plain-text format John Gruber introduced in 2004 to write structured text that converts cleanly to HTML. This tool does that conversion for the elements you reach for in a README, a comment or a note.

How it works

It applies a set of text rules: lines beginning with # become heading tags h1 to h6, double-asterisks become bold (the strong tag), single asterisks become italic (em), backtick spans become inline code and triple-backtick blocks become a code block, the link and image syntaxes become anchor and image tags, and lines starting with a dash, asterisk or plus become items in a bullet list.

For safety, the input is HTML-escaped first, so any raw HTML you paste shows up as text instead of being rendered. The output updates as you type.

Data source & conversion logic

There's no external data. The conversion follows Markdown's common conventions, applied in your browser as a set of text rules. John Gruber introduced the format in 2004; CommonMark later gave it an unambiguous specification.

  1. Step 1. Escape the input so any literal HTML is shown as text, not rendered.
  2. Step 2. Convert headings (one to six # marks), then fenced and inline code.
  3. Step 3. Convert bold, italic, images and links to their HTML tags.
  4. Step 4. Turn lines starting with a dash, asterisk or plus into items in a bullet list.
  5. Step 5. Wrap the remaining lines as paragraphs; copy the HTML or download output.html.

Privacy

The Markdown you paste is converted in your browser and never sent to a server.

The converter keeps no copy, so your text is gone when you close the tab.

Technical details

InputMarkdown text
OutputHTML (copy or download)
SupportedHeadings, bold, italic, code, links, images, bullet lists
Not supportedTables, blockquotes, nested or ordered lists
Raw HTMLEscaped and shown as text
Downloadoutput.html
Where it runsIn your browser, live

Standards and references

  • Markdown (John Gruber, 2004): the original plain-text-to-HTML conventions this converter follows for everyday elements.
  • CommonMark: the 2014 unambiguous specification of Markdown and the reference for correct behaviour. This tool implements a common subset, not the full spec.
  • GitHub Flavored Markdown: adds extensions such as tables and task lists on top of core Markdown. This tool does not handle them.

Accuracy and limits

It converts a subset of Markdown and does not conform to CommonMark. Everyday elements convert correctly. Tables (a GitHub extension), blockquotes, ordered and nested lists, horizontal rules and strikethrough don't.

Raw HTML in your Markdown is escaped and shown as text rather than passed through. That's safe, but it means you can't mix in hand-written HTML and have it render.

Lists become flat bullet lists; indentation for nesting isn't interpreted, and numbered lists aren't recognised.

If you need tables, task lists, footnotes or strict CommonMark and GitHub-Flavored output, use a dedicated CommonMark processor.

Real-world uses

README to HTML

Turn a Markdown README or notes file into HTML for a web page.

CMS content

Convert a Markdown comment or post for a system that stores HTML.

See the mapping

Preview how each Markdown element becomes an HTML tag.

Quick snippets

Produce small blocks of structural HTML from plain text fast.

When it fits, and when it doesn't

Good for

  • Quick Markdown to HTML for common elements
  • READMEs, notes and comments
  • Learning how Markdown maps to tags
  • Small HTML snippets from plain text

Not the best choice for

  • Tables, blockquotes or nested lists
  • Mixing in raw HTML
  • Spec-perfect CommonMark or GFM output

Need tables, task lists or strict CommonMark? Use a full CommonMark/GFM processor. Want to write and see the result side by side? Use the Markdown editor. Going the other way? Use HTML to Markdown.

Frequently asked questions

Which Markdown elements does it convert?
Headings (one to six # marks), bold and italic, inline and fenced code, links, images, and bullet lists made with a dash, asterisk or plus. Other lines become paragraphs.
Does it support tables?
No. Tables are a GitHub-Flavored Markdown extension, not part of core Markdown or CommonMark, so this lightweight converter doesn't produce them. The CSV to Markdown Table tool can make a table for you.
Is it CommonMark-compliant?
No. It implements a common subset of the CommonMark specification. Frequent elements work; advanced and edge-case rules don't.
What happens to raw HTML in my Markdown?
It's escaped and shown as text, not rendered. That keeps the output safe but means you can't blend hand-written HTML into the result.
Does it do ordered or nested lists?
No. It produces flat bullet lists only; numbered lists and indented sub-items aren't recognised.
Can I download the HTML?
Yes. Copy it from the output, or use Download to save output.html.
Is my text uploaded?
No. The conversion runs entirely in your browser, so nothing you paste leaves your device.
What is Markdown, and who created it?
It's a plain-text formatting syntax John Gruber created in 2004 (with Aaron Swartz) so writing could be easy to read as text and still convert to valid HTML.
What about blockquotes?
They aren't converted in this subset. A blockquote line is treated as ordinary text.
How is this different from the Markdown editor?
This tool gives you the HTML output to copy or download. The Markdown editor is a two-pane writing surface with a live preview, using the same renderer. Pick it when you want to write and see the result side by side.
Why does my converted HTML look unstyled?
It is structural HTML (headings, paragraphs, lists) with no CSS. Add your own stylesheet to control how it looks.

References

Checked against the converter's rules: it handles the common Gruber-era elements (headings, emphasis, code, links, images, bullet lists). It is not a full CommonMark parser, so tables and blockquotes stay as plain text.

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Back to the Markdown to HTML

Paste or pick your input at the top of the page. The conversion runs on this device and needs no account.

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