Markdown is a lightweight markup language that you can use to add formatting elements to plaintext text documents. It is widely used in blogging, instant messaging, online forums, collaborative software, code repositories, and documentation pages.

I've built this online tool to provide a convenient way to edit Markdown documents. The tool uses the remark library to parse Markdown into an abstract syntax tree (AST) and then uses the rehype-react library to convert the AST into JSX to present the Markdown document in the browser.

Go ahead and try it now!