Free Component Diagram Tool

Draw UML Component Diagram in a free, web-based UML drawing tool

Need a Free Component Diagram Tool?

Visual Paradigm Online (VP Online) Express Edition is a FREE online drawing software that supports UML, ERD and Organization Chart. You can create professional Component Diagram quickly and easily with its intuitive UML diagram editor. The free UML tool comes with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes and etc. Draw UML freely. And you own the diagrams you created for personal and non-commercial purposes.

Online Component Diagram Tool

Drawing UML can be simple and fun

Free UML Tool

Draw Component Diagram in a free UML tool for personal use:

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

Draw as many diagrams as you like. Export them as PNG/JPG/GIF/SVG/PDF.

Powerful Yet Simple

Editing UML is straightforward and quick. Here are some of the editing features of our intuitive Component Diagram editor:

  • Drag-to-create shape
  • Well attached connectors (no separate apart)
  • Well attached ball-and-socket joint (for component interface)
  • Include your own shapes in your UML model
  • Hundreds of diagram examples and templates

Quality Drawing

Position shapes precisely with alignment guide. Format your Component Diagram with rich set of formatting tools: Shape and line format, font style, rotatable shapes, shape alignment and distribution, embed image and URL, etc


Key features and benefits

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 are sticked 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

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.

Component Diagram Example: Ticket Selling System

Open Diagram

Component Diagram Example: Ticket Selling SystemOpen Diagram

Component Diagram Example: Web Store

Open Diagram

Component Diagram Example: Web StoreOpen Diagram

Component Diagram Example: Securities Trading

Open Diagram

Component Diagram Example: Securities TradingOpen Diagram

Component Diagram Example: Store Component

Open Diagram

Component Diagram Example: Store ComponentOpen Diagram

Component Diagram Example: Order Processing System

Open Diagram

Component Diagram Example: Order Processing SystemOpen Diagram

Start Drawing Your Free Diagram Today

No limitations, no obligations, no cancellation fees.


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