Technical diagrams
Explain how your system really works
Drop in servers, databases, firewalls, queues and containers, connect them with routed arrows, and group them into zones — ready for docs and runbooks.
- Free, no sign-up
- Saved on your device
- No watermark
The basics
What is a technical diagram?
A technical diagram shows the parts of a system and how data or traffic moves between them: an office network, a data pipeline, or how code gets from a laptop to production.
Clear icons and labelled arrows make these diagrams readable for engineers and non-engineers alike.
What you can add
- Users
- Internet
- Web app
- Mobile app
- Load balancer
- Server
- Container
- Function
Features
What makes it work
Infrastructure icons
Servers, databases, storage, routers, switches, firewalls, queues, functions, containers and more.
Zones and groups
Frames for a LAN, a VPC or a cluster — move the frame and everything inside moves with it.
Labelled, routed lines
Elbow connectors that follow your layout, with labels like “push”, “deploy” or “events”.
- Real templatesStart from a worked example and make it yours.
- Smart connectorsDrag a + handle to connect; Tab adds the next step.
- PNG, SVG & file exportFor docs and slides — or a .json to keep editing.
- Share linksSend a link; whoever opens it gets their own copy.
- Private by defaultSaved in your browser. Nothing is uploaded.
- Works on touchPan, pinch and edit on a tablet or phone.
Templates
Start from a worked example
Open one, change the words and it's yours — every element stays editable.
How it works
Three steps to done
- Step 1
Start from the network, pipeline or deployment template.
- Step 2
Add icons from the palette and connect them with the + handles.
- Step 3
Group parts in frames, then export for your documentation.
Use cases
Who it's for
IT and networks
Office networks, firewalls and devices for audits and handovers.
Data teams
Sources, queues, transforms and warehouses on one page.
DevOps runbooks
From repository to production cluster, step by step.
Technical Diagram
Common questions
What's the difference from an architecture diagram?
They overlap. Here “technical” covers networks, pipelines and deployments; the Architecture Diagram solution focuses on application services and data stores. Both use the same icons.
Can I change an icon?
Yes — select the element and pick another icon from the floating bar.
Can I export to Visio or draw.io?
Not directly. Export PNG or SVG for documents, or the .json board file to keep editing here.
Is it free?
Yes, with no sign-up. Diagrams are saved in your browser.
More solutions
Keep going
Ready when you are
Free in your browser — no account, no download, no watermark.