Architecture diagram generator

Create a Architecture diagram online for free. Rendered live with Mermaid syntax, exportable as PNG or SVG, no sign-up needed.

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How the syntax works

Every Architecture diagram starts with a keyword, and the lines below describe hierarchy and relationships through indentation and symbols. The canvas updates as you type.

architecture-beta
    group api(cloud)[API layer]
    service gateway(server)[Gateway] in api
    service auth(server)[Auth] in api
    group data(database)[Data layer]
    service db(database)[Primary] in data
    service cache(disk)[Cache] in data
    gateway:R -- L:auth
    auth:B -- T:db
    auth:R -- L:cache

Common uses

Widely used in technical documentation, product design, project management, and teaching. The result drops straight into Markdown, web pages, or slide decks.

Frequently asked questions

Do I need an account to make a Architecture diagram?

No. Every feature is free and open, you can start the moment the page loads, and exports are unlimited.

What formats can a Architecture diagram be exported to?

PNG and SVG. SVG is a vector format, so it stays sharp at any zoom level and works well in documents and slide decks.

How do I share a Architecture diagram with someone?

The share button produces a link with the diagram code embedded directly in it. Whoever opens it sees the same diagram, with no login required.

Start drawing your Architecture diagram now

18 diagram types, 10 languages, rendered live in your browser. No sign-up, free to use.