AI Diagram Generator

AI Diagram Generator is a web-based tool that turns your descriptions into professional diagrams. You can type a prompt, upload a product requirements document (PRD), paste a Slack thread, or even provide a photo of a whiteboard sketch. The tool then generates a structured diagram for you. It supports over 16 types of diagrams, including flowcharts, sequence diagrams, ER diagrams, mind maps, Gantt charts, and network diagrams.

The tool works by using AI models like GPT Image 2 and Claude Sonnet 4.6 to interpret your input, identify the key entities and their relationships, and write the underlying Mermaid code in real time. A standout feature is the ability to refine diagrams using natural language commands, like telling the agent to 'make the database red' without editing code. It also offers a 'Pro Mode' that can pull live web data for diagrams about current events, like an AWS outage map. You can export the final result in multiple formats, including editable Mermaid code, SVG, PNG, and PDF.

This tool is particularly useful for software developers designing system architectures, project managers mapping out timelines, students creating study aids, and technical writers preparing documentation. It saves the time and effort typically spent manually arranging shapes and connectors in traditional diagramming software, making it easy to visualize complex ideas quickly.