Welcome to tldiagram

tldiagram is a high-performance interactive diagramming tool built on the C4 model. Define your services, databases, people, and message queues once — then compose them across multiple diagrams and link nodes to drill into sub-diagrams.

What you can do

• Define objects — services, databases, people, queues, and custom types with icons
• Draw edges — directed or undirected, with optional labels
• Nest diagrams — link any node to a child diagram for C4-style drill-down
• Freestyle drawing — annotate diagrams with a freehand drawing layer
• Share — generate read-only share links for stakeholders

Quick start

1. Sign up at tldiagram.com/app
2. Create your first diagram from the dashboard
3. Open the Object Library drawer and add your first object
4. Drag a second object onto the canvas and draw an edge between them
5. Click any node to open its properties panel

Hello, World

You’ve found the docs. More content is on the way — this is just the beginning.

If you have questions or feedback, reach out at hello@tldiagram.com.