Markdown to HTML

The Markdown to HTML tool converts Markdown source into raw HTML output, the kind you can paste straight into an email template, a static site, or a CMS rich-text field that only accepts markup. It is powered by the marked library running entirely in the browser, so documents never leave your machine. Two toggles control the conversion: GFM enables GitHub-flavored extras like tables, task lists, and strikethrough, while Convert line breaks to <br> decides whether a single newline inside a paragraph becomes a break tag — useful for chat-style text, annoying for normal prose. The editor ships preloaded with a sample document exercising headings, links, inline code, a fenced JavaScript block, a table, and a blockquote, and everything recalculates as you type. A stat strip compares input and output character counts and byte sizes so you can see the markup overhead at a glance, and the finished HTML downloads as markdown.html. A note at the bottom points readers who want to see the rendered result to the separate Markdown Preview tool, keeping the distinction between source and rendered output explicit.

1. 1

   Paste or type Markdown into the Markdown input textarea, or click Sample to restore the demo document.

2. 2

   Toggle GFM for tables, task lists, and strikethrough support.

3. 3

   Toggle Convert line breaks to <br> if single newlines should produce break tags.

4. 4

   Read the raw HTML in the HTML output box — it updates live with every change.

5. 5

   Download the result as markdown.html when you are done.

• Generating HTML fragments to paste into an email builder that accepts markup.
• Converting README sections into HTML for a documentation site that stores raw markup.
• Producing table markup from GFM pipe tables without writing <tr> by hand.
• Converting release notes from Markdown for a CMS rich-text field.
• Checking the exact HTML a Markdown library will emit before styling it.
• Building static page content in Markdown and exporting the HTML source.

• Keep GFM on unless you specifically target a parser without GitHub extensions.
• Leave the line-break toggle off for prose — it produces <br> inside paragraphs where a browser would otherwise wrap naturally.
• Remember the output is raw source: paste it into a text editor or code view, not a WYSIWYG canvas.
• For code blocks, the HTML keeps your fenced language tag as a class, so style it afterward.
• Compare Input size and Output size stats when estimating payload growth for email-friendly output.
• Use Markdown Preview when you need the rendered view; this tool is for when you need the markup itself.

• Load the sample to see GFM tables, task lists, and strikethrough converted in one document.
• Watch the Output chars stat when writing for email — it reflects the markup weight clients must handle.
• Toggle GFM off and on with a table in place to see exactly what the flag protects.
• Download markdown.html and open it in a browser to check the raw source against the rendered page.