Announcement
Mermaid CLI - Command Line Interface for Mermaid Diagrams
A robust command-line tool to render Mermaid diagrams into various image formats (PNG, SVG) or PDF directly from the terminal, enabling automation and integration.
Project Introduction
Summary
This project provides a dedicated Command Line Interface (CLI) for the popular Mermaid diagramming library, allowing users to generate high-quality diagrams from text definitions without needing a web browser.
Problem Solved
While Mermaid is excellent for web contexts, rendering diagrams programmatically or integrating them into build processes (like documentation generation) without a browser environment can be challenging. This CLI solves that by offering a headless rendering solution.
Core Features
Multiple Output Formats
Supports generating diagrams in PNG, SVG, and PDF formats.
Headless Rendering
Utilizes headless browser technology (like Puppeteer/Playwright) to ensure accurate rendering identical to browser output.
Input Flexibility
Read Mermaid definitions from files, standard input, or directly from the command line.
Customization Options
Allows specifying output dimensions, CSS styling, and other rendering parameters.
Tech Stack
Use Cases
The Mermaid CLI is invaluable for automating diagram generation in various workflows:
Generating Diagrams for Documentation
Details
Integrate the CLI into documentation build pipelines (like MkDocs, Jekyll, Hugo) to automatically convert Mermaid code blocks into image assets.
User Value
Ensures diagrams in documentation are always up-to-date and consistently rendered without manual effort.
Automated Reporting and Analysis
Details
Include diagram generation as part of automated scripts or scheduled jobs that produce reports, dashboards, or analysis documents.
User Value
Adds visual clarity to automated outputs, making complex information easier to understand.
CI/CD Pipeline Integration
Details
Use the CLI in Continuous Integration workflows to validate Mermaid syntax or generate diagram previews during code commits or pull requests.
User Value
Catches errors early and provides visual feedback on diagram changes directly within the CI environment.
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