PlantUML AI Designer

PlantUML AI Designer helps you create technical diagrams (sequence diagrams, flowcharts, class diagrams, ERDs, system architectures, etc.) simply by describing them in natural language. HOW IT WORKS 1. Enter a description of the business flow/process/architecture you want to draw. 2. Select the diagram type (Sequence, Activity, Class, Component, State, ERD, Mindmap, Gantt, Network...). 3. Click Generate — AI generates PlantUML code and the diagram is automatically rendered. 4. Edit the description and click Refine to refine the existing diagram. 5. Save the PNG image or open it directly on plantuml.com. FEATURES - Supports 11 popular PlantUML diagram types. - Includes a set of sample templates: banking & payments (ISO 20022, ISO 8583, NAPAS...), DevOps/CI-CD, system architecture, business UML. - You choose your own AI provider: Google Gemini or Anthropic Claude — use your own API key. - Edit PlantUML code directly, re-render at any time. - Compact Side Panel interface, does not occupy separate tabs. REQUIREMENTS You A separate (free) API key is required from Google AI Studio (aistudio.google.com) or Anthropic Console (console.anthropic.com) to use the AI ​​code generation feature. The extension does not include a key, is free, and has no intermediary server — all AI requests go directly from your browser to your chosen provider. PRIVACY The extension does not collect or store your data on any servers. The API key and settings are stored locally on your computer (chrome.storage.local). See the extension's Privacy Policy page for details.