Write Markdown and see real-time HTML preview
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Markdown Preview is a free online tool that lets you write Markdown text and instantly see how it renders as formatted HTML, side by side in real time. Markdown is a lightweight markup language created by John Gruber in 2004 that uses plain text formatting syntax to create structured documents. It has become the de facto standard for writing documentation, README files, blog posts, forum comments, and technical notes across the software development world and beyond. The beauty of Markdown lies in its simplicity. Instead of clicking toolbar buttons or memorizing complex HTML tags, you use intuitive plain text conventions: surround text with asterisks for **bold** or *italic*, use hash symbols for headings, hyphens for bullet lists, and backticks for inline code. The syntax is designed to be readable even in its raw form, making Markdown files easy to write, read, and version-control with Git. Platforms like GitHub, GitLab, Stack Overflow, Reddit, Discord, and countless documentation sites all support Markdown natively. This tool provides a split-pane editor where you type Markdown on the left and see the rendered HTML preview on the right, updating in real time as you type. It supports the full CommonMark specification including headings, emphasis, lists, links, images, code blocks with syntax highlighting, blockquotes, tables, and horizontal rules. The tool also displays useful statistics such as word count, line count, and heading count. You can load a sample document to explore Markdown syntax or copy the generated HTML for use in your projects. All processing happens entirely in your browser — no data is sent to any server.