mermaid-ascii

Convert Mermaid diagrams to ASCII or Unicode renderings via CLI.

Updated Mar 3, 2026
One-click install
npx skills add https://github.com/tarrragon/ccsession --skill mermaid-ascii
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mermaid-ascii
Source: https://github.com/tarrragon/ccsession/tree/main/.claude/skills/mermaid-ascii
Command: npx skills add https://github.com/tarrragon/ccsession --skill mermaid-ascii

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

Mermaid diagrams are graphical and not easy to embed in plain text docs or terminals. This tool converts Mermaid syntax into readable ASCII/Unicode diagrams, enabling diagrams in environments without graphical support.

Core Features & Use Cases

  • Supports Flowchart, State Diagram, Sequence Diagram, Class Diagram, ER Diagram
  • Outputs ASCII and Unicode renderings for display in plain text or terminals
  • CLI and Python API with input via file or stdin

Quick Start

Provide a Mermaid diagram via a file or stdin and run mermaid-ascii to render ASCII or Unicode diagrams immediately.

Frequently Asked Questions about mermaid-ascii

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

FAQPage Schema
How do I render Mermaid diagrams as ASCII art in a terminal?

You can render Mermaid diagrams as ASCII art by providing Mermaid syntax via a file or stdin to a Python-based parser, which outputs readable text-based diagrams for terminals and plain text documentation.

What diagram types can I convert to Unicode text representations?

You can convert Flowchart, State Diagram, Sequence Diagram, Class Diagram, and ER Diagram Mermaid syntax into Unicode text representations for environments lacking graphical support.

Does this Mermaid to ASCII converter support stdin input?

Yes, the Mermaid to ASCII converter supports stdin input alongside file input, allowing you to pipe Mermaid syntax directly into the CLI for immediate ASCII or Unicode diagram rendering.

Can I use Mermaid diagrams in plain text documentation without graphical support?

Yes, converting Mermaid diagrams to ASCII or Unicode art enables embedding diagrams in plain text docs, tutorials, and design specs where graphical rendering is unavailable.

What is the best way to display Mermaid flowcharts in a text-based environment?

Parsing Mermaid flowchart syntax into ASCII or Unicode art is the best way to display diagrams in text-based environments, using a Python renderer that outputs readable text structures.

Are there limitations to rendering sequence diagrams as ASCII art?

Rendering sequence diagrams as ASCII art requires parsing Mermaid syntax into text-based layouts; while it supports sequence diagrams, complex interactions may produce wide or difficult-to-read ASCII output.