Want to draw UML activity diagram online for free?

Visual Paradigm Online Free offers a free UML activity diagram tool for personal uses. No matter you are a student or educator, you can start creating activity diagrams with an online, flexible and simple UML software now! As an all-in-one diagramming solution, VP Online also supports ERD, org. charts and floor plan, for free! Advanced diagram types such as flowchart, ArchiMate, BPMN, mind map are all available in higher editions at very low cost.

Make an Activity Diagram

Professional activity diagram starts here

Simply Free

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

No limited number of diagrams and shapes
Non-restricted accessing period
No banner / advertisement

Draw Fast

Create professional activity diagrams in a snap. Our online UML tool features:

Drag and drop interface
Connectors attached (no separate apart)
Format Copier: Instant format copying
Keep a lib of shape patterns for reusability
Several hundreds of diagram templates

Better Results

A full set of diagram editing features is available for you to draw the diagram you need.

Alignment guide for precise positioning
Include images, URLs and text in diagrams
Formatting options for shapes and lines
Rotate shapes and text
Group, align and distribute shapes
Auto. create shape from text list

Key features and benefits

Unlimited period of access
Unlimited number of diagrams
Unlimited number of shapes
UML Model, ER Model, Organizational Chart, Floor Plan, Business Concept Diagram, ITIL
Can be upgraded to paid editions for more diagram types and features
Cross platform support: Windows, Mac, Linux. Also 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 Activity 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.