Free network diagram tool

Network diagrams online, free.

LetDraw is a free online network diagram tool with 40 hand-drawn network icons, from routers and switches to firewalls and VPNs. Drop devices on the canvas, connect them with lines that stay attached, and share the network topology diagram with your team. No install needed.

Draw a network diagram How it works
Office network · topology
Internet Router Firewall DMZ Web server Switch Wi-Fi AP Server Desktop Laptop
Step by step

How to draw a network diagram in LetDraw

From an empty canvas to a network map you can hand to the next person on call.

  1. Add the Network library

    Open the Shape library panel and add Network, a set of 40 hand-drawn network icons.

  2. Place your devices

    Drag routers, switches, firewalls, servers and endpoints onto the canvas and label them with names or IP ranges.

  3. Connect and group

    Draw links that stay attached when you move devices, and wrap subnets or a DMZ in a frame.

  4. Share or export

    Send a link, edit together in real time, or export the network diagram as PNG, SVG or PDF.

Icons that read like a network diagram

Network icons for every layer

The Network library follows the classic technical diagram look: cylinders for routers, prisms for switches and brick walls for firewalls. Icons are grouped into Devices, Endpoints, Services, Storage, Topology, Communication and Security, so you find a load balancer, a VPN tunnel or a NAS in seconds.

  • 40 network icons: router, switch, firewall, proxy, access point, VPN and more
  • Frames as zones for subnets, a DMZ or each office site
  • Smart connectors that route around devices instead of crossing them
Try it free
Network RouterSwitch FirewallVPN ServerInternet Office A Router Office B Router VPN tunnel
What people draw

A network topology diagram for every setup

The same network diagram tool handles a home lab and a multi-site company network.

Office and home networks

Show how the modem, router, Wi-Fi access points and devices connect, so anyone can troubleshoot.

Server rooms

Lay out racks, switches, storage like NAS and SAN, and the backup path between them.

Security zones

Draw the firewall, DMZ, proxy and IDS / IPS placement for a security review or an audit.

Multi-site and VPN

Connect branch offices over the WAN or a VPN tunnel and mark which links are encrypted.

IT documentation

Keep a living network map in a shared workspace and look back through version history when it changes.

Networking classes

Teach LAN, WAN, subnets and DHCP with clear icons, then present the frames as slides.

Questions

Network diagram tool FAQ

Is LetDraw's network diagram tool free?
Yes. The Free plan includes the full canvas, every diagram type and export to PNG, SVG and PDF, with no credit card. Pro adds more documents, workspaces and AI requests.
Which network icons are included?
The Network library has 40 hand-drawn icons, including router, switch, layer 3 switch, firewall, load balancer, proxy, access point, server, VPN, DMZ, subnet, internet, WAN and LAN.
Can I add cloud icons to a network diagram?
Yes. Add the AWS, Azure or GCP library from the Shape library panel and mix cloud services with your on-premises network on the same canvas.
How do I share a network diagram?
Share a link to edit together in real time, publish a read-only view or embed, or export the network diagram as PNG, SVG or PDF for your runbooks.

More diagrams you can make

Flowcharts Process diagrams Org charts UML diagrams ER diagrams Kubernetes diagrams AI whiteboard Online whiteboard

Your next network diagram is one click away.

Open LetDraw in your browser and start mapping. Free, fast, and nothing to install.