Markdown Previewer
A markdown previewer renders your markdown into formatted HTML in real time as you type, so you can see exactly how your README, blog post, or documentation will look before publishing. It supports GitHub-flavored markdown including tables, task lists, fenced code blocks with syntax highlighting, and strikethrough text. A split-pane layout keeps your source on one side and the rendered output on the other, eliminating the cycle of editing, saving, and refreshing just to check formatting. The previewer parses your input with a CommonMark-compliant parser extended with GitHub-flavored markdown features. As you type, the parser rebuilds the HTML and streams it into the preview pane without a full page reload. Code blocks are passed through a syntax highlighter that recognizes dozens of languages, and raw HTML embedded in the markdown passes through unchanged so existing snippets continue to work. Common use cases: Drafting GitHub README files and pull request descriptions. Writing blog posts in markdown before migrating to a CMS. Reviewing documentation formatting without a local build. Composing forum and chat messages that support markdown. Teaching markdown syntax in workshops. Prototyping page layouts before exporting HTML.