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Object Diagram Generator

Capture a snapshot of your system at a moment in time. Describe the objects and links — ArchGPT draws an instant UML object diagram.

Generate Object Diagram

A Snapshot of Objects in Action

An object diagram is a snapshot of instances — a set of objects and their links at one moment in time. Where a class diagram describes types, an object diagram shows concrete examples.

Use it to illustrate a specific state of your system: the objects currently in memory, their attribute values, and how they reference each other.

What You Can Model

Runtime Snapshots

Illustrate the objects alive at a specific moment, with their current values.

Design Examples

Show concrete instances that make a class design easy to understand.

Debugging Aids

Visualize an object graph when reasoning about memory and references.

Link Semantics

Make instance-level associations explicit for teams and reviewers.

How It Works

  1. Describe the objects — name them and their attribute values in plain English.
  2. ArchGPT builds the snapshot — our AI creates the instances and their links.
  3. Get your diagram — an object diagram renders in seconds.
  4. Export or edit — download it, or adjust values in the Draw.io editor.

Try a prompt: "An instance customer1:Customer with name "Alice". It has an open order order1:Order with total 120. The order references one payment pay1:Payment with status "paid"."

Why ArchGPT?
  • Generate from plain text — no syntax
  • No signup or credit card required
  • Export as PNG, JPEG, SVG or PDF
  • Edit in the built-in Draw.io editor
  • AI explanation for every diagram
Start Generating

Frequently Asked Questions

Everything you need to know about generating object diagrams.

A class diagram shows types and their relationships. An object diagram shows concrete instances and their links at a point in time.

Use it to illustrate a specific runtime state, design example, or to clarify a class diagram with real instances.

Yes — object diagram generation is free with no signup required.