: You must have a Java Runtime Environment (JRE) installed. Java 11 or later is recommended for security and performance. 2. Download and Install Graphviz
To use PlantUML for anything beyond basic sequence diagrams, you typically need to install Graphviz , a graph visualization software that handles complex node positioning. plantuml graphviz download
PlantUML is a Java-based tool, meaning you only need to download a single JAR file to run it. : You must have a Java Runtime Environment (JRE) installed
While recent Windows versions of PlantUML (v1.2020.21+) include a "minimalistic" version of Graphviz, many users still prefer a full standalone installation for stability and compatibility with IDEs like VS Code or IntelliJ. 1. Download PlantUML you typically need to install Graphviz