mermaidjs-v11
Create professional diagrams with Mermaid.js v11 syntax. Supports 24+ types including flowcharts, sequence diagrams, class diagrams, ER diagrams, and Gantt charts for documentation and technical visualization.
Introduction
This skill provides comprehensive support for Mermaid.js v11, allowing developers, system architects, and technical writers to generate complex diagrams through simple, declarative text-based syntax. By leveraging Mermaid.js, you can embed visual representations directly into markdown files, HTML documentation, or generate standalone image files (SVG/PNG/PDF) via the CLI. It eliminates the need for manual drag-and-drop diagramming tools, facilitating version control of visual assets directly within your repository.
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Full support for 24+ diagram types including Flowcharts, Sequence Diagrams, Class Diagrams, State Diagrams, ER Diagrams, Gantt Charts, User Journeys, Timelines, and Architecture Diagrams.
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Seamless integration with Markdown using standard mermaid code blocks, enabling real-time documentation updates alongside code changes.
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Advanced CLI rendering capabilities via mermaid-cli for batch conversion of .mmd files to high-quality image formats (SVG, PNG, PDF).
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Robust customization options for theming (default, dark, forest, neutral) and visual styles, including CSS-based styling for granular control over elements.
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Accessibility compliance support to ensure visual diagrams are understandable and interactive for all users.
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To use, define your diagram structure using specific keywords such as flowchart, sequenceDiagram, or erDiagram followed by node and connection definitions.
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Utilize configuration blocks via YAML-style frontmatter within code blocks to adjust theme, font family, or security levels for specific diagrams.
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Incorporate the JavaScript API for dynamic, browser-based rendering in web applications by initializing the mermaid library with custom configurations.
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Use the CLI mmdc command for automating diagram exports in CI/CD pipelines to ensure documentation artifacts remain synchronized with system architecture changes.
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Remember that Mermaid.js is optimized for text-based versioning; keep diagram definitions modular and comment complex relationships using the %% syntax to maintain long-term readability.
Repository Stats
- Stars
- 3
- Forks
- 0
- Open Issues
- 0
- Language
- Python
- Default Branch
- main
- Sync Status
- Idle
- Last Synced
- May 3, 2026, 08:55 PM