UML Diagram Generator

Sequence Diagram Generator

Generate sequence diagrams for API calls, OAuth flows, payment flows, and distributed message exchanges.

State Diagram Generator

Model state transitions, events, and actions for any system or UI component.

ERD Generator

Generate ER diagrams with tables, columns, keys, and relationships. Export draw.io XML or SVG.

ERD Prompts

ERD prompts work best when they name the entities, relationships, and key attributes or constraints. These examples help you generate a clean first-pass schema diagram before you finalize table details.

Sequence Diagram Prompts

Sequence diagrams are easiest to generate when the prompt names actors, the order of requests, and any alternate or failure paths. These prompts give you a clean base for auth flows, API interactions, and service-to-service messaging.

OAuth2 Login Flow

Sequence diagram with token exchange, MFA, refresh rotation, and error states

Event-Sourced Order Management

Kafka-based saga with OrderService, InventoryService, PaymentService — failed payment compensation

Mermaid vs PlantUML: Which Diagram-as-Code Tool Is Right for You?

Mermaid and PlantUML are the two dominant diagram-as-code tools. Both let you write text and get a rendered diagram — no drag-and-drop required. The choice between them comes down to where your diagrams live, what types you need, and how much syntax complexity you're willing to accept.

System Design Diagrams: What to Draw and How

System design diagrams bridge the gap between an idea and a working system. They help engineers think through scalability, failure modes, and data flows before writing a line of code — and give new team members a map of a system that might have taken years to build.

AI Technical Diagram Generator

AIDrawIO focuses on technical diagrams engineers actually need: architecture diagrams, UML, ERDs, sequence diagrams, infrastructure maps, and cloud designs. Prompt first, then keep refining the result as an editable diagram.

AI Diagram Generator

AIDrawIO turns plain-English prompts into technical diagrams you can keep editing. Describe the system, process, or workflow you want, then export draw.io XML or share the result as SVG or PNG.

Mermaid vs PlantUML vs draw.io

Choose Mermaid for lightweight diagrams in docs, PlantUML for broader diagram-as-code depth, and draw.io for visual editing. Use AIDrawIO when you want AI to generate the first draft before continuing in Mermaid, PlantUML, or draw.io-oriented workflows.