Write Code. Get Diagrams.

Instantly.

The unified Diagram-as-Code (DaC) platform. Build elegant, versionable, and highly precise system architectures using Mermaid, PlantUML, and Graphviz without leaving your keyboard.

Open Interactive Playground
Powering Next-Gen Workflows

What We Offers

Support for the Engines You Love

We have 10 years of experienced in doing beautiful & creative stuff

PlantUML

See All

Mermaid

See All

Graphviz

  • Org Chart
  • Data Flow

ECharts

  • Column Chart
  • Bar Chart
  • Line Chart
  • Area Chart
  • Pie Chart
  • Doughnut Chart
  • Scatter Chart
  • Radar Chart
  • Heatmap Chart
  • Sankey Chart
  • Funnel Chart
  • Gauge Chart

Markmap

With Markmap support in VPasCode, you can turn plain Markdown outlines into clean, interactive mind maps instantly. Simply type your ideas using familiar headers and bullet points, and watch VPasCode render a responsive visual tree in real time.


A screenshot of PlantUML, which turns text code into visual maps. On the left is the typed-out code, and on the right is the actual deployment diagram it created, showing how a website’s internet traffic flows safely from the web address down into the servers and the main database.


A screenshot of Mermaid, which builds charts out of text code. On the left is the typed code, and on the right is the flowchart it made. It shows how user requests from a mobile app or website go through a security firewall, pass through a digital traffic controller, and get sent to different internal services like login or ordering systems.


A screenshot of Graphviz, which builds diagrams directly from text code. On the left is the typed code, and on the right is a corporate organization chart it generated, showing the company structure branching down from the Board of Directors and CEO to the technology and financial executives.

Instant Diagram Translation

Translating architectural diagrams manually is tedious and risks breaking your code. VPasCode introduces Native AI Diagram Translation. In just two clicks, you can instantly translate titles, labels, variables, and comments across PlantUML, Mermaid, or Graphviz. Your structural syntax stays perfectly intact while your text scales globally.

Original Language
Translated

Instant Syntax Error Fixing

A single typo or missing semicolon shouldn’t stall your design momentum. If your PlantUML, Mermaid, or Graphviz script fails to render, VPasCode catches it in real-time by displaying a warning block detailing the exact error type and line number. Instead of manually searching your code, simply click “Fix by AI” to instantly repair the syntax error and re-render your diagram on the fly.

Diagrams from Text

Write logic, not pixels. No more dragging nodes manually.

Easily Shareable

Collaborative URLs for instant feedback and team alignment.

No Setup Required

Zero installation. Just open the browser and start coding.

From Code to Clarity

Experience real-time rendering. As you type your logic, your visualization comes to life with pixel-perfect precision.

Vector Exports

Export as SVG or high-res PNG for documentation and slides.

Enterprise Provenance

Backed by Visual Paradigm

For over two decades, Visual Paradigm has been a world leader in diagramming software, enterprise architecture, and UML tools.
With VPasCode, we bring this profound industry wisdom directly into the modern code editor. We provide a platform that couples code-driven execution speeds with professional vector output ready for business documentation.

20+

Years of Modeling Heritage

Free

To Use & Export

Create your own

Ready to build beautiful diagrams with code?

No credit card. No installation required. Write Mermaid, PlantUML, and Graphviz right from your dashboard.

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