Is the AI diagram generator really free?

Yes. Free accounts get 1 diagram per rolling 5-hour window, and verifying your WhatsApp number in your account lifts that to 3 per window, free. Finished diagrams stay in your dashboard forever, and the limit resets automatically.

What diagram types can it draw?

ER diagrams (crow's-foot notation), UML use case diagrams, system context diagrams, layered system architectures, flowcharts, class diagrams, sequence diagrams, data flow diagrams, Gantt charts, network diagrams and mind maps. Name the type you want, or just describe your project and the agent picks the best fit.

Do I get a real, editable draw.io file?

Yes, the output is a genuine .drawio XML file, not an image. Open it free at app.diagrams.net (no account needed) or in the draw.io desktop app, and every shape, label and connector remains fully editable.

Can I upload my project document for more context?

Yes, attach a PDF, an image (PNG/JPG/WebP) or a text file up to 3 MB along with your description. The agent reads it (text is extracted from PDFs; images are analysed) and folds the details into your diagram.

How long does a diagram take?

Usually 1–4 minutes depending on complexity and the queue. A live progress bar tracks the drawing in real time, and you don't have to wait on the page, the finished .drawio file is also emailed to you.

Will my diagram be shown publicly?

Only the preview image, only with the permission you grant at submission, and only when the drawing passes our quality bar. The editable .drawio source file is never public, just you can download it from your dashboard or email.

Is it good enough for university assignments and vivas?

That's exactly what it's tuned for: correct notation (crow's-foot ER arrows, UML actors, «include»/«extend»), clean grid-aligned layout, academic Times New Roman styling, titles and legends. Always review the content for accuracy before submitting. It's your design.

Why is there a limit of 3 per 5 hours?

Each diagram is a full AI drawing session, which costs real compute. 3 per 5 hours keeps the tool free for everyone. The window is rolling, so capacity returns automatically.

Drawn by an AI agent · editable files

AI Diagram Generator, draw.io Files From a Description

Describe your system, database or process in plain English, our agent designs and draws a professional, fully editable .drawio diagram and sends you the file. ER, use case, architecture, flowchart, Gantt and more. Free: up to 3 diagrams every 5 hours (verify WhatsApp to unlock the full allowance).

PDF / image / text context File emailed to you Source file stays private

Diagrams drawn by our agent

Real output, shared with permission, click any card to view it full-size.

How it works

Drawing a clean diagram in draw.io takes most students an hour or more: placing every entity, dragging crow's-foot connectors, aligning boxes to a grid, fixing label overlaps. This tool puts a drawing agent between your idea and that canvas. You write the description once, the agent does the layout thinking and emits native draw.io XML (the same mxGraphModel format the editor saves), so the result opens in app.diagrams.net as if a careful human had drawn it.

Submissions enter a fair first-come queue. The agent studies your text (and your attached PDF, image or notes if you add one), chooses the right diagram type, plans a grid layout, then draws: correct notation for the type, consistent spacing, colour-grouped sections with a legend, a title, and academic Times New Roman styling throughout. Every finished drawing is rendered and checked, if it doesn't pass, it never ships. The editable file lands in your dashboard and your inbox; a preview image (with your permission) may join the public gallery so others can judge the quality before trying it.

Clean academic styling, Times New Roman, consistent sizing, a proper title
Correct notation per type (crow's-foot ER arrows, UML actors, «include»/«extend»)
Grid-aligned layout with no overlapping shapes or crossing-through edges
Colour-grouped sections with a legend when it helps
A fully editable .drawio file, every shape, label and edge stays editable

Diagram types it draws

ER diagram

Database design, entities, attributes and crow's-foot relationships

Use case diagram

UML actors, use cases, include/extend, viva-ready notation

System context

Your platform in the middle, every actor & external system around it

System architecture

3-tier / layered designs with components and data stores

Flowchart

Processes and algorithms with decisions and loops

Class diagram

OOP classes, fields, methods and UML relationships

Sequence diagram

Message flow between components over time

Data flow diagram

Level 0/1 DFDs, processes, stores, external entities

Gantt chart

Project timelines with phases and milestones

Network diagram

Servers, routers, firewalls and zones

Mind map

Brainstorms and topic breakdowns

Worked examples

1 · ER diagram from one sentence

Prompt: “ER diagram for an online bookstore: customers, orders, books, authors, categories, payments, reviews, a customer places many orders, an order contains many books, a book has one or more authors.” → The agent produces ~12 entities/relationships in crow's-foot notation, colour-grouped (customer side, catalog, transactions) with a legend, typically in 2–3 minutes.

2 · Use case diagram with a PDF attached

Prompt: “Use case diagram for my final-year project” plus your project proposal PDF (≤3 MB). The agent extracts the actors and functions from the document and draws the boundary box, UML actors, ellipses and «include»/«extend» links, matching the actual scope of your proposal instead of a generic template.

3 · Architecture from a whiteboard photo

Prompt: “Turn this sketch into a clean 3-tier architecture diagram” plus a photo of your whiteboard. The image is analysed, components and flows are identified, and you get a layered architecture drawing with labelled arrows and a database cylinder, ready for your report.

Frequently asked questions

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Comments & feedback

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