What is Diagramming?

Diagramming AI is an AI‑driven diagram generation and editing platform that supports flowcharts, UML, architecture diagrams, and more across Mermaid, PlantUML, GraphViz, D2, and Excalidraw engines. It lets users create diagrams from plain‑English prompts, refine them with an AI chat interface, and automatically correct syntax errors.

Quick‑edit controls, a visual editor that converts text diagrams into interactive Excalidraw canvases, and a library of templates for sequence, class, state, and Gantt charts are provided. Project‑based storage keeps diagram code and visual edits together, enabling versioned collaboration for developers, project managers, data analysts, technical writers, and educators.

Export options include SVG, PNG, and shareable URLs via Kroki, while customizable color themes and infographics templates support clear visual communication. By combining natural‑language input, real‑time AI suggestions, and flexible format support, Diagramming AI streamlines diagram creation and maintenance for technical, educational, and business audiences.

Diagramming on the web:

Diagramming details

Built for: Individuals

Diagramming tech specs

Works with: OpenAI / GPT Anthropic / Claude Google / Gemini
Cloud: AWS

Diagramming pricing

Freemium

Free $0

Lite $3

Starter $6

Pro $14

$3/mo is cheaper than most for Diagram Generation median $9.99/mo

Most Diagram Generation tools start between $5.33 and $59 a month.

Auto-renewal: Yes

Trial, refund and renewal terms as stated in Diagramming's own published documentation.

Verify on the official pricing page.

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Diagramming's key features

AI-powered diagram generation
Multi-format export
AI chat for edits
Live diagram preview
Quick edit adjustments
Excalidraw visual editor
URL and image conversion

Diagramming use cases

Generate a complete architecture diagram for a microservices platform using natural language prompts, automatically converting Mermaid syntax to an interactive Excalidraw canvas and exporting the final SVG for embedding in your documentation site without any manual diagramming
Create a real‑time UML class diagram for a new Java feature by describing the classes in plain English, letting the AI auto‑correct PlantUML syntax, collaborate with teammates on the same diagram, and export the final PNG for your Jira ticket
Design a step‑by‑step onboarding flowchart for your customer support portal by inputting a brief description, have the AI refine the GraphViz layout, and receive an exportable URL and interactive preview that can be shared with stakeholders