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Diagrams as Code With PlantUML

Write UML, sequence and architecture diagrams in a readable text syntax.

LinuximagedocumentationconvertLow risk
Run plantuml diagram.puml to render the description to an image.

01Command

Command
$ plantuml diagram.puml

02What it does

PlantUML understands a concise syntax for class, sequence, activity, component and deployment diagrams, and outputs PNG or SVG. Because it is text, diagrams can be diffed and generated in documentation pipelines.

03Risk

RiskLow risk
Requirementssudo apt install plantuml
!Warning: It needs a Java runtime and Graphviz for some diagram types; missing dependencies cause silent layout failures.

04Undo

✓No undo needed — this command does not change persistent state.

05Sources

  • Debian package: plantuml
    Debian · vendor-doc · 2026-09-20
    Evidence: Debian packages PlantUML, which renders UML and other diagrams from text.
  • PlantUML
    Official project · vendor-doc · 2026-09-20
    Evidence: Debian packages PlantUML, which renders UML and other diagrams from text.

Last verified: 2026-09-22 · Category: Developer