Integrated UML Diagramming Support (PlantUML) for Offline Desktop Version

[HungPoris]

I’ve found the current application to be an excellent tool for note-taking and organization. However, as a technical user, I believe adding specialized UML diagramming tools (or supporting renders from PlantUML code) would be a game-changer.

[draw-io-triage-bot[bot]]

👋 Thank you for opening this issue!

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Summary: The user is requesting integrated PlantUML support (or enhanced UML diagramming tools) in the draw.io offline desktop version, allowing users to render UML diagrams from PlantUML code directly within the application.

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📝 Additional Information Needed

To help us investigate this more effectively, could you please provide:

• Specific UML diagram types: Which UML diagram types are most important to you (e.g., class diagrams, sequence diagrams, activity diagrams, use case diagrams)?
• Integration approach: Are you requesting the ability to import/render PlantUML code directly within draw.io, or are you looking for dedicated UML shape libraries and tooling?
• Examples or mockups: Providing example PlantUML code or mockups of the desired workflow would help clarify the feature request.

We also have some questions:

• Are you aware that draw.io already includes UML shape libraries (under 'Search Shapes' or the UML category in the shape panel) that can be used to create UML diagrams manually? Would those meet your needs, or do you specifically need PlantUML text-to-diagram rendering?
• draw.io supports Mermaid diagram syntax insertion (via Extras > Edit Diagram or via plugins). Have you explored whether Mermaid's UML support (e.g., sequence diagrams, class diagrams) could serve as a workaround for your use case?
• Are you specifically requesting this for the offline Electron desktop version only, or would you also want this on the web version?
• Would an import/export feature (e.g., paste PlantUML code and convert it to a draw.io diagram) be sufficient, or do you need live rendering of PlantUML within the editor?

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_{🤖 This is an automated response to help with initial triage. A human maintainer will review this issue. If you've provided all the requested information, no further action is needed - we'll get back to you soon!}

[HungPoris]

Thank you for your detailed response. To clarify my request, here is the additional information:

Specific UML Diagrams: The most critical diagrams for my workflow are Class, Sequence, Activity, and State diagrams.

Integration Method: I am specifically looking for a Text-to-Diagram functionality. While manual shape libraries are useful, they are too slow for complex systems. I prefer typing PlantUML or Mermaid code directly and having the diagram generated/rendered automatically.

Response to your questions:

Manual Shape Libraries: I am aware of the existing UML shape libraries, but they do not meet my needs for speed and version control. Manually dragging and connecting shapes is time-consuming when the architecture changes frequently.

Mermaid Support: While Mermaid is a good alternative, I prefer the PlantUML syntax as it is more robust for professional software design. However, a more seamless, built-in interface for both would be ideal.

Platform: My primary focus is the Offline Desktop (Electron) version, as I often work on secure systems without internet access.

Workflow: Ideally, I need Live Rendering (displaying the code and the diagram side-by-side) within the editor. A simple one-time import/export is less efficient because it makes updating the diagram later very difficult.

[davidjgraph]

Thanks for the suggestion, but for the current time, this isn't within the scope of the project.