Diagram Monkey
Create Network Diagrams in Your Browser
Free browser-based network diagram creator, created by Your Network Monkey
no signup, no install, no limits
Key Features
14 network device types
Routers, switches, firewalls, load balancers, servers, wireless APs, laptops, phones, and more
Drag-and-drop canvas
Place devices, move them around, zoom in and out, and pan across an infinite workspace
Smart connections
Draw links between device ports with straight or right-angle routing
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Customize everything
Set device colors, add IP addresses, label your links with bandwidth or VLAN info
Export as PNG or PDF
Save high-quality images or print directly from your browser
Save and reload
Download your diagram as a JSON file and pick up exactly where you left off
Auto-save
Your work is saved to your browser automatically so you never lose progress
Light and dark mode
Switch between themes to match your preference
Keyboard shortcuts
Power users can speed through diagrams with hotkeys
100% free
No account, no watermark, no limits
Quick Start Guide
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1. Pick a device from the sidebar — routers, switches, firewalls, servers, and more
2. Click the canvas to place it, then drag to reposition
3. Connect devices by clicking the port dots that appear when you hover
4. Customize labels, IP addresses, colors, and link styles
5. Export your finished diagram as a PNG image or PDF
That's it. No signup. No install. No learning curve.
Who Uses Design Monkey
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Network engineers documenting infrastructure​
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IT students working on assignments or studying for certifications
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Managed service providers creating client-facing documentation
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Small business owners mapping out their office network
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Home lab enthusiasts planning their setup
Frequently Asked Questions
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Is Diagram Monkey really free?
Yes, completely free. No account needed, no watermarks, no feature limits.
Do I need to install anything?
No. DiagramMonkey runs entirely in your browser. There's nothing to download or install.
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Can I save my work?
Yes. Your diagram auto-saves to your browser. You can also download a save file to keep a permanent copy or share with someone else.
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Can I print my diagram?
Yes. Export as PNG or PDF, or print from your browser.
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Is my data stored on a server?
No. Everything stays in your browser.