Online Class Diagram Maker

Automated class diagram tools to help you design and code

The Easy Choice for Class Diagrams Online

Easy to Generate Automatically

SmartDraw can generate a visual representation of the classes in your code using your repository on GitHub or the repo on your local computer. Visualize your classes and their properties automatically whether you write C#, C, Java, JavaScript, Ruby or Python. Load your source code and choose which files you want to include in your diagram.

Easy to Use

The class diagram generated is fully editable. You can add new shapes to it or modify its properties. Clicking on the "info" icon will show you the description for each method and the the hyperlink links to the specific line in the source code. It's a really useful way of getting a handle on the basic structure of your project.

Easy to Work With Other Apps

SmartDraw is easy to work with no matter what other apps you use. You can add class diagrams to:

Microsoft Office^®
- Word^®
- PowerPoint^®
- Excel^®
Microsoft Teams^®
Google Workspace^™
- Google Docs
- Google Sheets
Atlassian^™ apps
- Confluence
- Jira

Easy to Save to Your Existing Storage Solution

SmartDraw works hand in glove with most file storage systems. You can save your class diagrams directly to:

SharePoint^®
OneDrive^®
Google Drive^™
DropBox^®
Box^®

There is no need to create a parallel set of common folders and permissions, SmartDraw can just save files directly into your existing set up.

Easy to Share

Share your class diagram with anyone, even if they don't own a copy of SmartDraw, with a link. You can also easily export any diagram as a PDF or common image formats like PNG or SVG.

Easy to Get Help

Have a question? Chat or email us. SmartDraw support is in-house and free!

Easy Collaboration

SmartDraw makes it easy to share your designs and code architecture and get input from your team.

Your team can edit the same class diagram in real time or add comments.

SmartDraw also works where you already communicate with your team. You can collaborate on class diagrams in Microsoft Teams^®, Slack or Confluence.

Make Class Diagrams Automatically

A class diagram is a visual representation of your software's basic architecture. It shows all the basic building blocks, their attributes, operations, and relationships between them.

SmartDraw can help you make a class diagram automatically using a local repository or a repo on Github.

Load your source code and choose which files you want to include in your diagram. Click "Build Diagram" and you're done. It's that easy.

No need to build diagrams by hand when SmartDraw does it for you.

Watch the video to see how you can create a class diagram online, automatically with SmartDraw.