pretty-mermaid-skills
An AI agent skill that turns Mermaid diagram code into styled SVG, PNG or terminal ASCII output. It works locally without a browser and offers several themes and diagram types.
Pick a small issue you can reproduce, then fix it with your AI coding agent.
Share on XLicense: MIT
Overview
Pretty Mermaid is a skill for AI coding agents such as Claude Code, Cursor, Codex and Gemini CLI. It takes Mermaid diagram source and renders it locally as a styled SVG, a PNG for sharing, or ASCII and Unicode text for the terminal. It needs no browser, Chromium, Puppeteer or DOM. You install it with the skills CLI and then ask your agent to draw diagrams, or run its batch renderer over many files.
Key features
- Outputs SVG, PNG and terminal ASCII from one Mermaid source
- 15 built-in themes plus custom colors
- Flowchart, sequence, state, class, ER and XY chart diagrams
- Batch parallel rendering from the command line
- Renders locally without a browser
Best for
Developers who let an AI agent produce diagrams for docs or terminal output and want nice-looking results without installing a headless browser.
- Upstream
- imxv/Pretty-mermaid-skills
- Fork on GitHub
- Guo-astro/pretty-mermaid-skills
- Upstream stars
- 1.5k
- Category
- AI agents and LLM tools
- Language
- JavaScript
- License
- MIT
- Forked
- 2026-08-14
- Sync status
- In syncLast synced 2026-10-22
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