Is Data Structure Builder free?
Yes. All features are free to use with no hidden limits.
Data Structure Builder
Visually build trees, graphs, arrays and linked lists with one-click multi-language code generation
Data Structures
Node Actions
Node Inspector
Templates
// Create a data structure firstQuick Guide
Select structure: pick a type on the left
Add node: click on the canvas or use Add Node
Select nodes: click nodes (Ctrl/Command for multi-select)
Connect nodes: select two nodes then click Connect
Remove node: select a node then click Remove
Edit properties: edit the selected node on the left
Documentation
What is Data Structure Builder?
Data Structure Builder is a visual online tool to build trees, graphs, arrays, linked lists, stacks and queues with one-click multi-language code generation, running locally in your browser.
How to use
- Choose a structure type such as tree, graph, array or linked list
- Click Add Node or click directly on the canvas
- Select two nodes and click Connect to build relationships
- Pick a language to view or export the generated code
- Use templates to load common structure examples
Key features
- Visual building with real-time structure preview
- Supports tree, graph, array, linked list, stack and queue
- One-click code generation for JavaScript, Python, Java and C++
- Built-in templates for binary trees, graphs and linked lists
- Runs locally in the browser to keep data private
- Interactive node selection, connection, removal and editing
FAQ
Can I use the generated code directly?
Yes. The code follows common patterns and can be copied into your project with minor adjustments.
Which structures are supported?
Tree, graph, array, linked list, stack and queue are available today, with more coming soon.
Is my data safe?
Absolutely. Everything runs locally and nothing is uploaded to a server.
Privacy
All operations run locally in your browser, and structure data or generated code is never uploaded.