Convert Markdown to HTML with live preview.
Our free Markdown to HTML Converter lets you write Markdown and instantly see the rendered HTML output side by side. Whether you're a developer, blogger, or technical writer, this tool eliminates the guesswork from Markdown formatting and gives you clean, ready-to-use HTML code in seconds.
Markdown is a lightweight markup language designed to be easy to read and write in plain text. It uses simple symbols like asterisks, hashes, and brackets to define formatting. When you convert Markdown to HTML, those symbols are transformed into proper HTML tags — headings become <h1>–<h6>, bold text becomes <strong>, links become <a> tags, and so on.
This converter uses the popular marked.js library with GitHub Flavored Markdown (GFM) support, which means it handles tables, fenced code blocks, strikethrough, and task lists — all the extras you'd expect from modern Markdown rendering.
The live preview updates as you type, so you can see exactly how your content will look in a browser without switching between tools or running a build process.
Getting started is straightforward. Just paste or type your Markdown in the left panel and watch the preview update on the right in real time.
When writing Markdown for HTML output, keep your structure clean. Use a single # for your main heading and ## for subsections — this maps directly to proper semantic HTML heading hierarchy, which is important for both readability and SEO.
For code blocks, always use triple backticks with a language identifier (e.g., ```javascript) rather than indented code. This produces a <pre><code class="language-javascript"> block that works seamlessly with syntax highlighting libraries like Prism.js or highlight.js.
If you're pasting the output into a CMS or email builder, check that the tool doesn't strip certain tags. Some platforms sanitize HTML and remove elements like <pre> or <table>. In those cases, simplify your Markdown to avoid complex structures.
Unlike many online converters that require you to sign up or wait for server-side processing, this tool runs entirely in your browser. The conversion is instant, private, and works even without an internet connection once the page is loaded.
The interface is clean and distraction-free, with a split-pane layout that lets you write and preview simultaneously. There are no ads interrupting your workflow, no file size limits, and no watermarks on the output. You get exactly the HTML you need, nothing more.
We use the battle-tested marked.js library, the same engine used by many popular developer tools, so you can trust the output to be accurate and standards-compliant.
Your privacy is our priority. All processing happens entirely in your browser using JavaScript. No files, data, or inputs are ever uploaded to any server. Everything stays on your device, making this tool completely safe to use with sensitive content.