Free Class Diagram Editor

State-of-the-art online UML maker for all software teams - with Class Diagram and more

Need a free online UML class diagram software?

Introducing Visual Paradigm Online Free Edition, a free online diagramming software that offers both basic and advanced UML diagramming functionalities. The UML class diagram editor enables you to create professional system design blueprints with UML. The UML diagram examples enable you to get started in quick. As a web-based UML tool, VP Online runs on the web and is compatible with all browsers.

Free Class Diagram Editor
Make a Class Diagram

Professional class diagram starts here

Free UML Software

Draw as many class diagrams as you like. Output your work as images (PNG/JPG/GIF/SVG) or PDF. Enjoy!

  • No limited number of diagrams and shapes
  • No limited period of access
  • No advertisement

Draw Easily and Smartly

Online drawing can be easy and fun. Here are some of the editing features included in our intuitive class diagram editor:

  • Drag-to-create shape
  • Well attached connectors (no separate apart)
  • Instant copying of shape format
  • Save shapes as pattern for reusability
  • Hundreds of diagram templates

Better Results

An array of powerful diagram tools are there to support you in creating stunning class diagrams:

  • Precise shape positioning with alignment guide
  • Insert your own image, URL and text
  • Range of shape and line format options
  • Rotatable shapes and captions
  • Group, align and distribute shapes
  • Auto shape formation from item list

Key features and benefits

Key features and benefits
  • Unlimited period of access
  • Unlimited number of diagrams
  • Unlimited number of shapes
  • UML Diagram Tool, ERD Tool, Organization Chart Maker, Floor Plan Designer, ITIL, Business Concept Diagram
  • Can be upgraded to paid editions for more diagram types and features
  • Cross-platform: Windows, Mac, Linux. Compatible with all web browsers
  • Easy to use: Create and connect shapes with drag and drop. Connectors will snap to shapes and never separate apart.
  • Apply different formatting options (shape and lines, solid and gradient paint), 40+ connector types, RTF caption, font options, shadow effect, etc
  • Visio drawing and stencil import
  • Draw your own diagrams with your own shapes.
  • Easily embed text, external images and web links to diagram
  • Get start quickly with hundreds of diagram examples and diagram templates
  • Print, export and share your work in different formats (PNG, JPG, SVG, GIF, PDF)
  • Google Drive Integration

But don't take our word for it

Try it yourself. Just browse the Class Diagram examples below and click Open Diagram to open and edit. You will see for yourself that it is everything we say it is, or perhaps more.

Class Diagram Example: Sales Order System

Open Diagram

Class Diagram Example: Sales Order SystemOpen Diagram

Class Diagram Example: Car

Open Diagram

Class Diagram Example: CarOpen Diagram

Class Diagram Example: Telephone

Open Diagram

Class Diagram Example: TelephoneOpen Diagram

Class Diagram Example: Star-Based LAN

Open Diagram

Class Diagram Example: Star-Based LANOpen Diagram

Other Solutions

Start Drawing Your Free Diagram Today

No limitations, no obligations, no cancellation fees.


Get Started