markdown-ruby This is the VS Code extention that adds {ruby|ルビ} syntax support to built-in markdown preview. This extension is built on markdown-it-ruby. Features {漢字|かんじ} => <ruby>漢字<rt>かんじ</rt></ruby> {漢字|かん|じ} => <ruby>漢<rt>かん</rt>字<rt>じ</rt></ruby>