draw.io, Mermaid, PlantUML or SVG: Choosing the Right Diagram Tool for Confluence

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Selecting a diagramming approach for Confluence depends less on which tool is best and more on who will edit the diagram in the future. Draw.io suits non-technical teams since it offers in-page visual editing accessible to anyone, while Mermaid and PlantUML work best when diagrams are maintained by engineers alongside code in version control. Attached SVGs preserve design fidelity but lose interactivity and searchability on Confluence Cloud, which renders them as flat raster images. Screenshots are occasionally appropriate for diagrams documenting a fixed moment in time, though they become a liability if the underlying system changes. Three key questions guide the decision: who will edit it next year, whether it needs to evolve with the system, and whether visual precision or editability matters most.

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