Architecture Diagram Generator

List your components in groups and connections between them to get a Mermaid system architecture diagram.

Standalone items (one per line)

Groups — Group name: item, item, item

Connections — A -> B : label

Direction

Mermaid diagram

flowchart LR
  A(["User"])
  B(["CDN"])
  C(["Load balancer"])
  subgraph ALP["Frontend"]
    D["Web app"]
    E["Mobile app"]
  end
  subgraph ALT["Backend"]
    F["API server"]
    G["Worker"]
    H["Auth service"]
  end
  subgraph ALY["Data"]
    I["PostgreSQL"]
    J["Redis"]
    K["Object storage"]
  end
  D -->|HTTPS| F
  E -->|HTTPS| F
  F --> H
  F -->|SQL| I
  F -->|cache| J
  G -->|files| K
  F -->|jobs| G

Paste this into the Mermaid Editor on WeVivid, a GitHub README (inside a ```mermaid block), GitLab, Notion or any Mermaid-compatible tool.

About architecture diagram generator

List your components in groups and connections to get a system architecture diagram.

What to show

Clients, services, databases and queues.
The direction of data flow.
External systems and trust boundaries.

A worked example

Group Browser and Mobile app as clients, API gateway, Auth service and Orders service as backend, and Database and Cache as data, then connect them. The diagram shows how a request travels from the user to the data store and which parts depend on each other.

What a good diagram answers

What are the main parts, and what does each do?
How do they communicate, and in which direction?
Where are the boundaries for security and ownership?

Levels of detail

Draw one diagram for the big picture and separate ones for each area. A single chart with every detail becomes unreadable and goes out of date quickly.

How to use architecture diagram generator

1Enter your valuesFill in the fields — example values are already there to start from.

2Adjust the optionsChange the choices to match your situation. Results update as you type.

3Use the resultRead it, or copy it with the Copy button.

Your privacy on this tool

This tool is built so that what you enter stays with you.

Everything you type or upload is processed in your browser, on your own device.
Nothing you enter is sent to our servers, so we cannot see, keep or share it.
We do not save your input. A few tools remember small settings, such as a chosen time zone, in your own browser only.
No account, email address or sign-up is needed, and nothing is watermarked.
If you accept analytics, we count page views and tool use. We never collect the contents of your files or text.
Ads, where shown, sit below the tool and are not given what you enter.

Read the full privacy policy.

Questions people ask

Write Group name: item, item, item on its own line.

A text-based way to draw diagrams. GitHub, GitLab, Notion and many docs tools render it automatically.

No. Everything is worked out in your browser and nothing you type is sent to a server.

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About architecture diagram generator

List your components in groups and connections to get a system architecture diagram.

What to show

Clients, services, databases and queues.
The direction of data flow.
External systems and trust boundaries.

A worked example

What a good diagram answers

What are the main parts, and what does each do?
How do they communicate, and in which direction?
Where are the boundaries for security and ownership?

Levels of detail

Draw one diagram for the big picture and separate ones for each area. A single chart with every detail becomes unreadable and goes out of date quickly.

Questions people ask

Write Group name: item, item, item on its own line.

A text-based way to draw diagrams. GitHub, GitLab, Notion and many docs tools render it automatically.

No. Everything is worked out in your browser and nothing you type is sent to a server.

Architecture Diagram Generator

About architecture diagram generator

What to show

A worked example

What a good diagram answers

Levels of detail

How to use architecture diagram generator

Your privacy on this tool

Questions people ask

More tools you may like

Architecture Diagram Generator

About architecture diagram generator

What to show

A worked example

What a good diagram answers

Levels of detail

How to use architecture diagram generator

Your privacy on this tool

Questions people ask

More tools you may like