Free Network Diagram Maker — Cisco, Fortinet & Meraki

About the network diagram maker

Draw a network topology diagram in the browser with device icons for routers, switches, firewalls, servers and cloud. It is a free alternative to desktop diagramming software for network engineers: start from a template, label links and VLANs, and export the result.

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From template to documentation

Pick a template for a campus, branch, data centre or secure edge design, or start blank. Devices carry names, IP addresses, VLANs and roles, and links can show interface names, speeds and link type so the diagram doubles as documentation.

Free to use, saved when you sign in

Drawing is free without an account and a draft is kept in your browser. Signing in with Google saves diagrams to your account, lets you reopen them from any device and unlocks export and sharing.

Made for tablets and desktops

Placing devices and drawing links needs a larger screen, so the editor is available on tablets and computers. The guide and FAQ on this page are readable on any device.

What this tool does

Design network topology diagrams directly in your browser — drag devices onto the canvas, connect them, and label every link with an interface name, IP range, or VLAN ID.

Features

35+ device icons across routers, switches, firewalls, servers, wireless APs, and more
Vendor product lines for FortiGate, Cisco, Meraki, and Palo Alto
Five starter templates — basic LAN, hub-and-spoke WAN, 3-tier campus, DMZ, and site-to-site VPN
Straight, curved, or orthogonal link styles, with draggable labels
Right-click any device or link to rename, recolor, resize, or reshape it
Free-standing text notes for annotating the canvas
Undo/redo, align/distribute tools, and dot, grid, or cross canvas backgrounds
Export as PNG or SVG, or sign in free to save diagrams to your account and reopen them later

Supported vendors

Generic core devices (router, switch, firewall, load balancer, wireless AP) plus vendor-flavored icons for FortiGate, Cisco, Meraki, and Palo Alto gear — the same platforms covered across netconfig.io's guides.

Exporting and saving your diagram

The canvas itself is free to use with no account needed. Export requires a quick, free Google sign-in — once signed in, you can also save diagrams to your account and reopen them anytime from Templates → Open.

Planning your addressing scheme first? Use the Subnet Calculator to work out your ranges before you diagram them.

Frequently asked questions

Do I need to sign in to use this tool?

No — the canvas is completely free to use with no account needed. A quick, free Google sign-in is only required when you export or save a diagram.

Is my diagram saved anywhere?

It autosaves to your browser's local storage as you work. If you sign in, you can also save it to your account and reopen it later from Templates → Open, from any device.

Can I export my diagram?

Yes — export as a PNG image or an SVG vector file from the Export menu in the toolbar.

Which vendors' device icons are included?

Generic router, switch, firewall, server, load balancer, and wireless AP icons, plus vendor-flavored variants for FortiGate, Cisco, Meraki, and Palo Alto devices.

Can I add notes that are not tied to a device?

Yes — right-click anywhere on the empty canvas and choose Add text to drop a free-standing note you can place and style independently.

Is the network diagram maker really free?

Yes. You can build diagrams without signing in. A free Google sign-in is only needed to save to your account, export and share.

Which devices and vendors are included?

Generic routers, switches, firewalls, servers and load balancers plus vendor-specific icons for Cisco, Fortinet, Juniper, Palo Alto, Meraki, Aruba, Huawei, AWS, Azure and more.

Network Diagram Maker