Mermaid Graph Renderer

Renders Mermaid diagrams to production-quality SVG, PNG, and PDF in web and offline contexts. Covers the full spectrum from lazy-loaded client-side rendering to 1000x-faster native Rust batch export.

Core Constraint

Mermaid.js requires browser APIs (document.createElement, SVGTextElement.getBBox()) to compute text dimensions. Every non-browser rendering path must either embed a headless browser or reimplement the renderer from scratch. This constraint shapes every decision below.

When to Use

✅ Use for:

• Rendering Mermaid diagrams on web pages (performance-optimized)
• Exporting diagrams to SVG, PNG, or PDF (offline/CLI)
• Setting up CI/CD pipelines that generate diagram images
• Choosing between rendering libraries for a project
• Optimizing Mermaid load time on documentation sites