Markdown to HTML Converter
Render CommonMark Markdown to clean HTML with source view and live preview.
Written by Golam Rabbani, Founder & Lead Engineer
How to use this markdown to html converter
- Paste your Markdown into the input area.
- Pick whether you want to see the HTML source or a rendered preview.
- Press Convert to render the Markdown.
- Copy the HTML, or switch the view to preview and screenshot the layout.
- Hit Reset to clear and try a new document.
About this markdown to html converter
The Markdown-to-HTML converter implements a small CommonMark-flavoured grammar covering the syntax that 99% of writers reach for: ATX-style headings (# .. ######), paragraphs, fenced code blocks (```lang), unordered (-, *, +) and ordered (1.) lists, blockquotes (>), horizontal rules (---), inline code (`text`), **bold**, *italic*, links ([text](url)), and images (). Everything runs in your browser; nothing is uploaded. The HTML source view returns clean markup you can paste into a template, a CMS, or an email; the preview view shows what the page would look like in a browser.
Because the parser is intentionally small (a few hundred lines of TypeScript), it stays fast and predictable. Each block is processed once, inline rules run inside it, and HTML entities are escaped where the text would otherwise be interpreted as HTML — so & in your Markdown survives the round trip without producing accidental tags.
For example, the input "# Hello\n\nThis is **bold** and *italic* text." renders to: <h1>Hello</h1> <p>This is <strong>bold</strong> and <em>italic</em> text.</p>
Switching to preview mode shows the same content laid out as a styled article block.
FAQ
- Which Markdown flavour does it support?
- A CommonMark-compatible subset: ATX headings, paragraphs, fenced code blocks with language hints, unordered/ordered lists (one level), blockquotes, horizontal rules, inline code, bold, italic, links, and images.
- Are GFM extras like tables and task lists supported?
- Not in this version. Use the dedicated Markdown Table Generator for tables; task list checkboxes pass through as plain list items.
- Is my Markdown sent to a server?
- No. Parsing and rendering happen entirely in your browser.
- Is the rendered preview safe?
- The converter escapes HTML special characters in your Markdown text, so plain text cannot inject script tags. The preview only renders the HTML produced by the converter itself, not arbitrary HTML you might paste in.
- Why is my fenced code block not coloured?
- The converter emits <pre><code class="language-xxx"> but does not bundle a syntax highlighter — that is the job of the Syntax Highlighter tool, which you can run on the same snippet separately.
- How are nested lists handled?
- This converter renders one level of list. Deeply nested lists work best in a full CommonMark parser; for casual notes a flat list is usually fine.