Why I built my own PlantUML Generator (and why you might need it too)

#plantuml #react #productivity #webdev

If you're a developer, chances are you've used PlantUML or Mermaid to visualize logic. While Mermaid is great for quick charts, many enterprise projects still require PlantUML.

However, the developer experience (DX) with PlantUML isn't always smooth. After struggling with slow rendering and clunky previews, I decided to build a web-based, offline-capable PlantUML generator.

The Motivation

The biggest "pain point" for me was the setup. Most solutions require a portable PlantUML server or a heavy VS Code extension. I wanted something fast, lightweight, and accessible directly in the browser—even without an internet connection.

Solving the "Pain Points"

I built Beautiful PlantUML to solve 5 specific issues I faced daily:

Sticky Participants: In large diagrams, scrolling down means losing track of which line belongs to which participant. I made them "sticky" so you always have context.
Flexible Zooming: Instead of fighting with VS Code’s scroll-zoom, I implemented a more fluid navigation system.
Direct Message Editing: You can now edit messages directly on the diagram without hunting through lines of code.
Performance: I optimized the rendering engine to be significantly faster than traditional server-side generation.
Code Mapping (Experimental): Clicking a message on the diagram should jump you straight to that line in the editor. Note: Still in the lab, but getting there!