Code-focused
Python Class Diagram Generator
Build a class diagram for Python services, models, and dataclasses. Align names with your modules, then export for docs or onboarding.
Features
- Live editor for python class diagram generator
- Starter template included on the page
- PNG and SVG export
- No install required
Need a blank canvas? Open the full UML studio.
What you can model
Python class diagrams help when inheritance trees, protocol-style interfaces, or service layers are hard to explain in prose alone. They clarify composition and dependencies for readers who will not open every module.
How to use this generator
Model the types that matter, show composition for injected dependencies, preview, then export PNG or SVG for docs or onboarding.
Notation that matters
Classes map to Python types. Associations and composition show how services hold repositories or models. Keep method names close to your public API so the diagram stays honest.
Keep the diagram readable
There is no automatic AST upload here. List the classes your readers need. Use the Java generator for Java codebases and the general class diagram maker for language-agnostic domain models.
Frequently asked questions
Is this Python class diagram generator free?
Yes. Edit and export in the browser without a paid plan.
Does this parse Python in the browser?
No. You provide a PlantUML model of the classes you want to publish.
How is this different from the class diagram maker?
This page uses Python-oriented examples and guidance. The class diagram maker is the general tool for any domain.
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Browse the full UML diagram tools directory or return to the UML diagram hub.