Plain-language generation
Ask for a diagram without beginning from an empty PlantUML document.
From a plain-language prompt to editable UML
AI UML diagram generator with editable PlantUML
Describe the system or workflow you want to visualize. AI creates PlantUML source, the room renders a preview, and you remain free to refine either the prompt or the source.
Generate a UML diagram
No installation · Start free
Generate UML
AI assisted
Describe a login flow
Review generated PlantUML
Refine, render and download
Changes and reactions update live
Useful by design
Everything you need in one shared room
Editable output
AI returns PlantUML source rather than locking the result into an uneditable image.
Iterative prompts
Ask for actors, branches, styling or other changes while keeping recent context.
Multiple UML styles
Generate sequence, class, activity, component, use-case and related diagram types.
Manual fallback
Correct or extend the PlantUML directly whenever AI output needs adjustment.
Collaborative review
Share the room so teammates can inspect the source and rendered result.
Start in seconds
How it works
- Describe the diagramExplain the participants, entities, workflow or architecture in the AI prompt.
- Generate PlantUMLAI proposes source based on the current prompt and diagram.
- Review the previewCheck the rendered image and inspect the source for correctness.
- Refine and sharePrompt again or edit manually, then invite reviewers or download the image.
Made for real work
Ways to use it
API flows
Turn a written request flow into a sequence diagram.
Software design
Draft classes and relationships before implementation.
Business processes
Visualize decisions, branches and responsibilities.
Architecture reviews
Create a starting diagram and refine it with the team.
Questions and answers
Frequently asked questions
Is AI output always correct?
No. Generated diagrams can contain modeling mistakes or PlantUML syntax errors. Review the source and preview before relying on it.
Can I modify the generated UML?
Yes. The generated PlantUML is placed in the normal source editor and remains fully editable.
Does generation use my current diagram?
Yes. The current PlantUML can be supplied as context so prompts can refine an existing diagram.
Are AI requests unlimited?
No. AI usage is metered by plan, with substantially higher monthly limits on Pro.
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Open the tool now, then invite others with one link.
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