AI Diagram Maker

AI Diagram Maker is an architecture diagram tool. A conversational diagramming tool that converts plain English, uploaded documents and GitHub repositories into D2-based software architecture, sequence, ER and flow diagrams, with chat-based editing, code view, PNG and SVG export, and an MCP server for IDEs.

AI Diagram Maker turns written descriptions into structured software diagrams. You type a scenario such as a login flow, a data model or a service topology, and the tool returns a rendered diagram with components, connectors and layout already in place. The homepage pitches the whole product against the drag and drop workflow of conventional diagram editors: no blank canvas, no shape palette, no manual alignment. It positions itself squarely at developers and technical teams who need architecture, sequence, entity relationship, network and flowchart visuals without spending half an hour on each one. Under the hood, the output is D2 diagram code. That choice explains most of the product's behavior. The AI writes the code, D2's layout engines handle positioning and styling, and you get two ways to revise: chat with the assistant in natural language, or open a code view and edit the D2 directly. Conversations keep context, so a request like converting a flow diagram into a sequence diagram is treated as a modification of the existing work rather than a fresh start. Inputs are not limited to typed text; the tool accepts uploaded images, documents and notes, and it can analyze public or private GitHub repositories to produce an architecture view of a codebase. Exports cover PNG, SVG and diagram code, which suits documentation, presentation decks and repository files. An MCP server extends generation into Cursor, Claude Desktop, VS Code and other MCP clients, so a diagram can be produced without leaving the editor. Compared with incumbent tools like Lucidchart or draw.io, the trade is clear: you surrender pixel level control and gain speed, plus a code artifact you can version. Teams that need hand-placed, presentation-polished layouts may still prefer a canvas editor.