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VPasCode

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AI-POWERED DIAGRAM GENERATION

VPasCode

Free Diagram-as-Code Tool

Turn plain descriptions into beautiful diagrams instantly. VPasCode uses AI-powered tools to generate PlantUML and Mermaid code from scratch, while automatically fixing syntax errors in real time.
Try It Now
Screenshot of the VPasCode platform showing a PlantUML text editor on the left and a live-rendered software architecture diagram on the right.
AI-POWERED

Let AI Do the Drawing and Fixing For You

You don’t need to know how to write special code or formulas to use this tool. VPasCode comes with built-in, AI-powered tools that make diagramming completely effortless.

  • AI-Powered Diagram Generation

    Don't know how to start? Just type a simple sentence describing what you want—like "Show a user logging into a website"—and the AI will automatically create the entire diagram for you from scratch in seconds.

  • AI-Powered Error Fixing

    If you make a quick typo while typing your notes and the drawing stops showing up, the tool highlights the mistake. Simply click "Fix by AI," and it instantly repairs the typo so your drawing comes right back.

  • AI-Powered Translation

    If you need to share your diagram with people around the world, you can translate every single label, title, and note into another language with just a couple of clicks.

An open AI Generation text box inside the VPasCode platform, allowing users to create diagrams from text prompts.
VPasCode split-screen editor showing Mermaid text to diagram script on the left and a live-rendered flowchart on the right.
EASY EDITING

Build Diagrams with Code

VPasCode is a free website by Visual Paradigm that lets you build clean, professional diagrams by simply typing text. Instead of spending hours clicking, dragging shapes, connecting lines, and trying to align boxes perfectly, you just type out your ideas, and the tool draws the diagram for you instantly on the screen.

  • No Installation Needed

    It runs entirely in your internet browser, so you don't have to download or install anything.

  • Completely Free

    You can create, edit, and download your drawings without needing a credit card or paying a dime.

  • Instant Preview

    As you type your notes or steps, your drawing changes and updates right before your eyes.

EXPORT

Share Your Work in High Quality

When your drawing is finished, getting it off the website and into your documents or emails is simple.

  • Super Sharp Downloads

    You can download your diagrams as high-quality images or PDFs. Even if you zoom all the way in, the lines and text stay perfectly crisp and never look blurry.

  • Quick Web Links

    Create a simple website link for your diagram so you can email it to team members or clients for quick feedback.

The file export dropdown menu in VPasCode, showing options to download diagrams as PNG, SVG, or PDF.

All Your Favorite Text-to-Diagram Tools in One Place

VPasCode is a single tool made for software teams to build diagrams using text. Instead of jumping between different websites, our app puts PlantUML, Mermaid, Graphviz, ECharts, and Markmap together in one dashboard to make your work quick and easy.

Plantuml

  • ArchiMate
  • Sequence
  • Class Diagram
  • Activity
  • Deployment
  • Timing
  • C4 Architecture
  • Use Case
  • Object
  • Component
  • State Diagram
  • ERD

See all

Mermaid.js

  • Mind Map
  • C4
  • Requirement
  • Timeline
  • Gantt
  • Quadrant
  • Class
  • ERD
  • Flowchart
  • Sequence
  • State Diagram
  • Architecture

See all

Graphviz

  • Digraph
  • Flowchart
  • Cluster
  • Graph
  • Org Chart
  • Data Flow

See all

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

See all

Data & Schemas

  • JSON
  • SQL
  • YAML
  • CSV
  • JSON Schema
  • XML

See all

Code

  • Python
  • TypeScript
  • Java
  • C#
  • Go
  • Rust

See all

Licensing & Pricing

Free Plan

  • Online Code Editor

    Enjoy full use of the web-based workspace with no setup required.

  • Automatic Format Detection

    Let the system instantly recognize your diagramming language as you type.

  • Real-Time Rendering

    Watch your written logic transform into precise charts automatically.

  • Image Export

    Download your finished diagrams easily as high-quality PNG or SVG files.

  • Diagram Sharing

    Generate collaborative links to share your work with your team for quick feedback.

Premium Plan

  • AI Diagram Generation

    Create complete architecture maps and visual models from scratch using plain-language text prompts.

  • AI Diagram Modification

    Update and refine existing visuals easily to add, remove, or change sections without manual editing.

  • AI Error Fixing

    Catch syntax issues in real time and fix typos or missing symbols with a single click.

  • AI Translation

    Instantly translate diagram titles, labels, and comments across different languages without breaking your code structure.

  • OpenDocs Integration

    Seamlessly connect and send your work directly to the OpenDocs pipeline.

VP Online: Combo Edition or higher.

VP Desktop: Professional Edition or higher (with an active maintenance plan).

Note: Active users of VP Desktop Professional Edition (or higher) receive free access to VP Online Combo Edition web apps, unlocking complete use of all premium features.

Key Features

Unified Diagramming Editor

Bring all your text-to-diagram tools together. Write code for PlantUML, Mermaid, Graphviz, ECharts, and Markmap inside one simple screen.

AI Code Generator

Build complex system architectures from simple text instructions. Our built-in AI turns your regular words into perfect diagram code in seconds.

Real-Time Visual Feedback

See your layout update instantly as you type. Watch your written logic transform into clear, precise charts without any manual dragging and dropping.

FAQ

VPasCode lets you create diagrams using five popular text-to-diagram engines: PlantUML, Mermaid, Graphviz, ECharts, and Markmap. You can also work with data schemas like JSON, SQL, and YAML directly inside the tool.
No installation is required. VPasCode is a lightweight, web-based tool that runs completely in your internet browser, allowing you to start coding and viewing diagrams instantly.
The built-in AI handles everything from creation to editing. You can generate a complete diagram from scratch simply by typing your topic or project ideas. If you have an existing diagram, you can tell the AI to modify it—like adding new steps, removing sections, or simplifying the structure. It also catches code typos instantly and lets you fix them or translate your diagram labels with just a couple of clicks.

Experience AI-Powered Diagramming

Create complete charts from scratch using simple text prompts. Easily add new steps, remove sections, or change existing layouts without any manual editing.

Get Started Now
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