Excalidraw

What Excalidraw actually is

An infinite canvas for boxes, arrows and rough sketches, rendered in a deliberately wobbly hand-drawn style. Live collaboration works from a shared link with no account, drawings stay in the browser unless exported, and shape libraries cover most system-diagram needs.

Why it is worth your time

The sketchy rendering signals that a diagram is a draft, so colleagues argue with the idea instead of with your box alignment.

Common questions

Is Excalidraw free?

Yes. Excalidraw is free and does not ask you to register or hand over an email address before you can use it.

How long does Excalidraw take?

One quick round, then you can leave. We file it under "A minute" — diagrams that look hand-drawn, shared by one link.

Does Excalidraw work on a phone?

Excalidraw really wants a mouse and a wide window. It will load on a phone, but the experience is built for desktop.

What kind of site is Excalidraw?

We list it under Practical Magic — free tools that feel like cheating. The sketchy rendering signals that a diagram is a draft, so colleagues argue with the idea instead of with your box alignment.