If you are using Confluence Server, please see this page.

PlantUML, Mermaid UML, Graphviz: UML Diagrams for Confluence is the app that renders UML and other types of diagrams inside Confluence, using PlantUML, Mermaid, and Graphviz.

You can install the app by following the instructions at Atlassian Marketplace.


Using Mermaid and Graphviz syntax, you can draw various diagrams, such as Flowchart, Sequence Diagram, Class Diagram, State Diagram, User Journey.

The text-based format minimizes the effort required to maintain diagrams and increase the reusability of content.

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