Need a web-based component diagram editor for free?

Visual Paradigm Online Free Edition is available for creating stunning UML Diagrams. As a web-based UML component diagram tool, it is cross platform and can work very well on Windows, Mac OS, and Linux. The UML software comes with an intuitive interface that supports diagramming entirely with drag-and-drop. Although it's free, you can create unlimited diagrams. Try now! No registration required.

Make a Component Diagram

Easily create beautiful component diagrams

Free UML Tool

Create as many diagrams as you like. Output diagrams into images (PNG/JPG/GIF/SVG) or PDF. Simply free!

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

Draw Fast

Online drawing can be simple. Here are some of the editing features that help you draw diagrams effortlessly:

Drag and drop based editor
Reliable connectors (no separate apart)
Format copier
Keep a lib of shape template for reuse
Hundreds of start-up templates

All-in-One

A full set of editing features are there to assist you in producing high quality result for use in your reports and presentations:

Position shapes precisely using alignment guide
Add images, URLs and text
Many color and formatting options for shapes
Rotate shapes and captions with ease
Group, align and distribute shapes
Auto. shape formation from list of text

Key features and benefits

Unlimited period of access
Unlimited number of diagrams
Unlimited number of shapes
UML, ERD, Org Chart, Floor Plan Maker, Business Concept Diagram, ITIL
Can be upgraded to paid editions for more diagram types and features
Multi-platform support: Windows, Mac, Linux. Also 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
Draw your own diagrams with your own shapes.
Visio drawing and stencil import
Easily embed text, external images and web links to diagram
Print, export and share your work in different formats (PNG, JPG, SVG, GIF, PDF)
Get start quickly with hundreds of diagram examples and diagram templates
Google Drive Integration

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But don't take our word for it

Try it yourself. Just browse the Component 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.