- Free to use with zero sign-up or account creation required
- Live split-screen Markdown editor with real-time preview and synchronized scrolling
- Full GitHub Flavored Markdown (GFM) support: tables, task lists, autolinks, footnotes, callouts
- Syntax highlighting for 190+ programming languages with 1-click code copying
- KaTeX LaTeX math expression rendering (inline and display blocks)
- Interactive Mermaid diagrams with fullscreen zoom, SVG copying, and PNG/SVG export
- 50+ preset preview themes, 1,900+ Google Fonts, and custom CSS styling
- Multi-tab document management, local auto-save, and drag-and-drop import
- Comprehensive export: Markdown (.md), standalone HTML, formatted PDF, PNG, and WeChat MP formatted rich text
- Markdown format enhancement (1-click formatting) and long image splitting/pagination
- 100% local-first browser processing—documents are never uploaded to a storage server
- Private URL sharing via compressed client-side hash (no server database needed)