Write Code. Get Diagrams.
The unified Diagram-as-Code (DaC) platform. Build elegant, versionable, and highly precise system architectures using Mermaid, PlantUML, and Graphviz without leaving your keyboard.
What We Offers
Support for the Diagram-as-Code Engines You Love
Markmap
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.
AI-Powered Productivity Features
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.
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.
Why VPasCode is the Best Diagram-as-Code Tool for Developers
Diagrams from Text
Convert raw logic directly into visuals. No manual dragging or dropping required.
Easily Shareable
Collaborative URLs for instant feedback and team alignment.
No Setup Required
A lightweight, web-based diagram-as-code tool that runs directly in your browser with no installation needed.
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
Backed by over 20 years of software modeling expertise, VPasCode delivers a enterprise-ready diagram-as-code tool designed for speed, precision, and seamless collaboration.
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.