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Microservices Diagram Maker

Map services, gateways, and datastores so ownership and call paths stay visible before the mesh grows. Adapt the starter, then export for RFCs.

Features

  • Live editor for microservices diagram
  • 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

Microservices diagrams show service boundaries, gateways, and data ownership. Use them when the main question is which services exist and how they call each other at runtime.

How to use this maker

Place one box per service, attach databases to owners only, connect runtime calls, avoid shared-database shortcuts you do not intend, preview, then export for RFCs.

Notation that matters

Services are components or boxes. Gateways sit at the edge. Databases belong to owners. Edges are runtime calls. Add a broker when messaging is part of the design, and label edges when the purpose is not obvious.

Keep the diagram readable

Use C4 for leveled architecture storytelling. Use a component diagram for modular structure without service-mesh emphasis, and an API sequence diagram when hop-by-hop HTTP detail matters more than topology.

Frequently asked questions

Is this microservices diagram maker free?

Yes. Edit and export in the browser without a paid plan.

C4 or microservices diagram?

Use C4 for leveled architecture storytelling. Use this page when service boundaries and dependencies are the main question.

Should every internal library appear?

No. Show deployable or independently owned services. Hide private libraries unless they define a public boundary.

Related tools

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