What is a PlantUML file?

PlantUML (.plantuml, .puml) is a text-based diagramming format that uses simple syntax to generate UML diagrams — sequence, use case, class, activity, component, state and deployment diagrams. It is widely used in software documentation.

Are my PlantUML files uploaded?

The diagram text stays on your device. Without a configured PlantUML server, the viewer shows a placeholder. For full rendering, a PlantUML server URL must be configured in options.

What diagram types does PlantUML support?

PlantUML supports sequence, use case, class, activity, component, state, deployment, object, timing, network, architecture and wireframe diagrams, Gantt charts and mind maps — all from text syntax.

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PlantUML Viewer

Free online PlantUML viewer. Open and preview PlantUML diagrams (.plantuml, .puml) directly in your browser — no upload, no software.

.plantuml.puml

Образец PlantUML

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PlantUML (.plantuml, .puml), created by Arnaud Roques in 2009, is a text-based UML diagramming tool. It uses a simple DSL syntax to describe diagrams as text, then renders them to images. PlantUML supports all major UML diagram types plus Gantt charts, mind maps and wireframes. It is integrated into many IDEs, wikis and documentation systems.

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