The Markdown Preview is a live editor that renders your Markdown into formatted HTML side by side as you type. Markdown is a lightweight markup syntax where plain-text cues such as # for headings, ** for bold, backticks for inline code, and fenced code blocks stand in for HTML tags, keeping your source readable while still producing rich output. It's the standard for README files, documentation, issues, and many messaging platforms.

This tool supports GitHub Flavored Markdown (GFM), so alongside the basics you get tables, task lists, strikethrough, autolinked URLs, and fenced code blocks with a language hint for syntax highlighting. The left pane holds your source and the right pane shows the rendered result, updating instantly with no button to press, so you can catch formatting mistakes as you write. When you're happy, a single click copies the generated HTML for pasting into a website, email, or CMS.