Mermaid ASCII

lastmod 2026-02-16created 2026-01-313 edits

Rendering Mermaid diagrams in the terminal

About

• beautiful-mermaid is an ultra-fast TypeScript-based tool that renders Mermaid diagrams as SVG or ASCII art
• Supports 5 diagram types (Flowchart, State, Sequence, Class, ER) and works in both the terminal and the browser
• 15 built-in themes, and VS Code themes can be applied directly through Shiki compatibility
• Mono mode provides a consistent visual style with just two colors, and CSS custom properties support live theme switching
• Gaining importance as a lightweight, zero-dependency tool for visualizing data flow and system structure in AI-assisted programming environments

See also

• Mermaid
• ASCII
• MonoSketch - ASCII-based diagramming tool

Favorite site

• Github - lukilabs/beautiful-mermaid
• Mermaid ASCII: Rendering Mermaid diagrams in the terminal | GeekNews