Frontend Frameworks

diagrams

Diagram as Code for infrastructure visualization.

Status
Generally available
Last checked
Checked · Oct 15, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

Diagrams is an open-source Python library that allows you to create infrastructure diagrams from code. It simplifies the process of visualizing complex systems by using simple and intuitive syntax, making it easier to maintain and update diagrams alongside your infrastructure changes.

Diagrams stands out as an open-source Python library that simplifies the creation of infrastructure diagrams from code, offering a unique blend of automation and maintainability.

When it fits — and when it doesn’t

A good fit for

  • DevOps teams needing to visualize complex cloud infrastructures quickly and accurately.

  • Developers who want to maintain up-to-date architecture documentation alongside their codebase.

  • Teams that require automated diagram generation from infrastructure-as-code definitions.

Look elsewhere if

  • Projects requiring real-time collaboration on diagrams (diagrams is a library, not a collaborative tool).

  • Users looking for a graphical user interface to create diagrams without coding.

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited visual customization options

    Diagram appearance is constrained by the library's default styles and limited API for custom styling

  2. 02

    Performance issues with large diagrams

    Rendering complex infrastructure can lead to slow performance or crashes due to high memory usage

What it does well

  • Code-based diagram creation for infrastructure visualization.

  • Supports various cloud providers and services.

  • Easy to maintain and update diagrams alongside code changes.

  • Intuitive syntax for creating complex system diagrams.

  • Generates high-quality SVG images.

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up diagrams

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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