Writing Markdown with Instant Feedback
Type Markdown on the left, see the rendered result on the right - including tables, fenced code blocks and syntax highlighting. Useful for drafting README files and documentation when you do not want to commit just to check whether a table renders. The HTML export is clean markup without editor classes or inline styles.
If a specific construct will not behave - reference links, nested lists, escaping - the Markdown syntax guide covers the full syntax with examples. Going the other way, from formatted text in Google Docs or Word into Markdown, is the job of the Rich Text to Markdown converter.