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plantuml.rs

plantuml.rs

import Playground from ’../../components/Playground.astro’;

plantuml.rs

Section titled “plantuml.rs”

A 100% Rust reimplementation of PlantUML — the Java diagram-generation library — with behavioral parity as the goal, plus language bindings for Java, TypeScript, and Python via FFI.

Why plantuml.rs?

Section titled “Why plantuml.rs?”
  • Pure Rust core — no JVM dependency. Renders diagrams with a native Rust pipeline.
  • Multi-language bindings — use the same engine from Rust, Java (JNI), TypeScript/JavaScript (WASM), and (planned) Python.
  • Sequence diagrams now — sequence diagram parsing and SVG rendering are working and tested against the Java reference. More diagram types are being ported incrementally.
  • Preprocessor support — !include, !define, variables, and conditionals via the TIM engine.

Quick example

Section titled “Quick example”
AliceBobAliceBobAliceBobhellohi
Source 
@startuml
Alice -> Bob: hello
Bob --> Alice: hi
@enduml

Try it now

Section titled “Try it now”

Head to the Playground to render diagrams live in your browser using the WASM build — no installation required.

Next steps

Section titled “Next steps”