UML Diagram StudioUML Studio

Structural UML

Package Diagram Maker

Map packages and dependency direction so illegal imports show up early. Adapt the layered starter to your module names, then export when the rules look right.

Features

  • Live editor for package diagram maker
  • 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

Package diagrams show how model elements are grouped and how those groups depend on each other. They are ideal for layered architectures, module boundaries, and import rules that code review alone often misses.

How to use this maker

Create package blocks, place only the types needed to explain direction, add dependency arrows, check for cycles in the preview, then export for architecture guidelines.

Notation that matters

Packages nest elements. Dependency arrows point toward the package being used. Nested packages can show subsystems. Keep arrow direction consistent with your compile-time or import rules.

Keep the diagram readable

If domain depends on infrastructure, the diagram should make that mistake obvious. Do not dump every class into the picture. Use a class diagram for type detail and a component diagram for deployable units.

Frequently asked questions

Is this package diagram maker free?

Yes. Edit and export online without a paid plan.

Should every class appear in a package diagram?

No. Show packages and only the types needed to explain dependency direction.

Package diagram or component diagram?

Packages emphasize namespace and layering. Components emphasize larger software units and their wiring.

Related tools

Browse the full UML diagram tools directory or return to the UML diagram hub.