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Discussion on "Mermaid vs PlantUML in 2026: Which to Pick for Engineering Docs" | Hashnode

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Levi Liu

Building Beauty Diagram. Writing weekly on diagrams, docs, and dev ergonomics.

Jun 5

Mermaid vs PlantUML in 2026: Which to Pick for Engineering Docs

TL;DR Mermaid won the README and the markdown ecosystem; PlantUML won the engineering whiteboard and the IDE. In 2026 they're still the two serious "diagram as code" formats, and which one you should

beauty-diagram.hashnode.dev10 min read

#plantuml #mermaid #documentation #pkm #programming-blogs

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