Plantuml Ascii

The plantuml-ascii skill generates text-based ASCII and Unicode diagrams from PlantUML notation, enabling developers and technical writers to create sequence diagrams, class diagrams, flowcharts, and other visualizations in terminal-friendly formats. It solves the problem of embedding diagrams in version-controlled documentation, terminal environments, and systems where graphical outputs aren't supported. The skill supports both pure ASCII output and Unicode-enhanced variants for improved readability.

skills.sh installs: 9.8K
GitHub stars: 41K
last updated: Aug 21, 2026

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Install

$ npx -y skills add github/awesome-copilot --skill plantuml-ascii --agent claude-code

Installs into .claude/skills of the current project.

Files

PlantUML ASCII Art Diagram Generator

Overview

Create text-based ASCII art diagrams using PlantUML. Perfect for documentation in terminal environments, README files, emails, or any scenario where graphical diagrams aren't suitable.

What is PlantUML ASCII Art?

PlantUML can generate diagrams as plain text (ASCII art) instead of images. This is useful for:

Terminal-based workflows
Git commits/PRs without image support
Documentation that needs to be version-controlled
Environments where graphical tools aren't available

Installation

# macOS
brew install plantuml

# Linux (varies by distro)
sudo apt-get install plantuml  # Ubuntu/Debian
sudo yum install plantuml      # RHEL/CentOS

# Or download JAR directly
wget https://github.com/plantuml/plantuml/releases/download/v1.2024.0/plantuml-1.2024.0.jar