Mermaid for Real-World Notes

Using Markdown-native diagrams without turning the writing process into a design-tool detour.

Mar 22, 2026 · 1 min read · Updated Mar 24, 2026

diagrams architecture mermaid

Series

Eleventy in Production

A practical series on keeping static sites elegant, maintainable, and production-ready.

Reading Notes

What this article tries to answer

Each post is designed to feel like a field note: readable enough to skim, specific enough to reuse, and opinionated enough to be worth bookmarking.

Mermaid is strongest when the diagram lives close to the idea it explains.

Instead of opening a separate design tool, you can sketch the system directly in the post and refine only when the writing proves the structure is worth keeping.

flowchart TD
    Author[Markdown post] --> Build[11ty build]
    Build --> Page[Static HTML page]
    Page --> Mermaid[Client-side Mermaid render]
    Page --> Reader[Readable article]

That trade-off is why Mermaid wins for a Markdown-first tech blog: the workflow stays lightweight, the source stays diffable, and the diagrams stay easy to update.