Want a free, web-based diagram tool?

Visual Paradigm Online is a state-of-the-art online drawing software that creates professional designs for use in system and business design. It has a free Free Edition that supports non-commercial uses, which is extremely good for people who want to learn UML and ERD, which are two major diagrams it support. Besides UML, the free online diagram software also supports ERD, Organization Chart, Floor Plan and more. It comes in handy when you already have Visio drawing developed as it enables you to import Visio drawing and carry on editing. Best of all, the free edition can run on different platforms and lets you create unlimited number of drawing and shapes.

Open the Diagram Editor

Create fantastic drawings with powerful and intuitive tools

It's Free

The free online drawing tool is truly free for personal use:

No ad
No limited number of diagrams and shapes
No limited period of access

Just create as many drawings as you like. Output your work into PNG/JPG/GIF/SVG/PDF. Simply free!

Simple & Fast

For self-learning, doing homework and all sorts of personal uses. For Free!

Create unlimited number of diagrams and shapes
Won't expired
Produce JPG, PNG and other image formats

Massive Diagram Types

Create as many UML diagrams, ERD, Organization Chart, Floor Plan, Business Concept Map, ITIL Diagrams as you like. Enjoy advanced diagrams like Flowchart, BPMN, ArchiMate, DFD, Network Diagram, AWS by upgrading to a paid edition in low cost.

Key features and benefits

Unlimited period of access
Unlimited number of diagrams
Unlimited number of shapes
UML Tool, ERD Tool, Organization Chart Maker, Floor Plan Designer, Business Concept Diagram, ITIL
Can be upgraded to paid editions for more diagram types and features
Works on all OS (Windows, Mac, Linux) and compatible with all web browsers
Easy to use: Create and connect shapes with drag and drop. Connectors are always attached 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
Build your own shape library to create diagrams with your own shapes.
Easily add text, notes, external images, web links to diagram
Print and export into different formats (PNG, JPG, SVG, GIF, PDF)
Hundreds of start-up diagram examples and diagram templates
Save your drawing in Google Drive
Visio drawing and stencil import

But don't take our word for it

Try it yourself. Just browse the 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.