How it Works

The conversion works by leveraging two distinct parsing mechanisms:

Markdown to HTML

Powered by Marked.js. It parses Markdown syntax symbols (like #, **, -) and compiles them into standard HTML tags (<h1>, <strong>, <li>).

HTML to Markdown

Powered by the Turndown.js engine. It traverses the HTML DOM tree, identifies semantic elements, and "downgrades" them into concise Markdown markup.

Use Cases

CMS Migration

Export articles from WordPress or rich text editors, convert HTML to clean Markdown, and migrate to static site generators like Hugo or Jekyll.

Technical Docs

Write READMEs or API docs in Markdown for speed, then convert to HTML for embedding in product websites or knowledge bases.

Email Marketing

Draft email content in Markdown to focus on writing, then convert to HTML to ensure compatibility with email clients.

FAQ

Does it support tables?

Yes, this tool supports GFM (GitHub Flavored Markdown) tables. HTML tables are converted to standard Markdown pipe tables.

Is the conversion client-side?

100% Client-side. All processing happens in your browser via JavaScript. No data is ever sent to a server.

Why are some CSS styles lost?

Markdown is a structural markup language, not a styling one. Inline CSS (colors, fonts) is discarded during conversion to keep content clean, retaining only semantic structure (bold, italic, headers).

Are images and links supported?

Yes. <img> tags convert to ![]() syntax, and <a> tags convert to []() syntax.

Can it handle nested lists?

Yes. Nested <ul> and <ol> structures are correctly parsed into indented Markdown lists.

How are code blocks handled?

HTML <pre><code> blocks are identified and converted into Markdown fenced code blocks (```).

Any size limits?

Performance depends on your browser, but processing docs with hundreds of thousands of characters is generally fast. For extremely large files, try splitting them.

What libraries are used?

We use industry-standard libraries: Marked.js for parsing Markdown to HTML, and Turndown.js for converting HTML back into Markdown.

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HTML ↔ Markdown Converter