mermaid

Render Mermaid diagram definitions into SVG graphics or terminal ASCII art.

4|1|Updated Feb 19, 2026

Search Tags:#mermaid #cli #svg #diagram #ascii #render

Ready to run

npx skills add https://github.com/billlzzz26/visual-story-extension --skill mermaid-billlzzz26

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: mermaid
Source: https://github.com/billlzzz26/visual-story-extension/tree/main/.agents/skills/mermaid
Command: npx skills add https://github.com/billlzzz26/visual-story-extension --skill mermaid-billlzzz26

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires beautiful-mermaid, and includes scripts (resource) and references (resource) components.

What problem does it solve?

Creating visual diagrams from Mermaid syntax is cumbersome without a reliable renderer, especially when developers need both high‑quality SVGs for documentation and plain‑text ASCII art for terminals.

Core Features & Use Cases

Dual Output: Generate SVG graphics for rich documentation or ASCII art for terminal display.
Theme Support: Apply built‑in themes such as github‑dark or dracula to SVG output.
Convenient CLI: Accept diagram files or stdin, automatically install the required library, and write results to a file or stdout.

Quick Start

Use the mermaid skill to render the diagram in 'architecture.mmd' as an SVG file.

Frequently Asked Questions about mermaid

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I render Mermaid diagrams to SVG without installing extra tooling?▼

You can render Mermaid diagrams to SVG instantly by processing .mmd files or piping Mermaid code. The skill automatically installs the required beautiful-mermaid dependency and outputs graphics for documentation without manual setup.

Can I generate ASCII art from Mermaid syntax for terminal display?▼

Yes, you can generate ASCII art from Mermaid syntax for terminal display. The renderer processes diagram definitions and outputs terminal-friendly plain-text ASCII art alongside its SVG generation capabilities.

What is the best way to apply themes like dracula to Mermaid SVG output?▼

The best way to apply themes like dracula to Mermaid SVG output is using built-in theme support. You can select themes such as github-dark or dracula when processing .mmd files to style the resulting SVG graphics.

Does Mermaid rendering work with stdin and output to stdout?▼

Mermaid rendering works with stdin and stdout. You can pipe Mermaid code directly into the renderer and write the resulting SVG or ASCII output to stdout, allowing seamless integration into developer workflows and scripts.

Why use a CLI renderer for Mermaid instead of external browser-based tools?▼

A CLI renderer for Mermaid eliminates browser dependencies by automatically installing the beautiful-mermaid library and processing .mmd files directly. It provides dual SVG and ASCII output for documentation and terminal workflows without additional tooling.