How to Use Excalidraw for Quick Whiteboard Sketches
Excalidraw is a free, open-source virtual whiteboard that draws everything in a hand-sketched style. You open a browser, sketch boxes and arrows, and share a link. No signup is required to start drawing, and the files are plain JSON you can host yourself.
It sits in a different lane than polished diagram tools. The rough look is intentional — it signals “draft” and stops people nitpicking pixels. Here is the fast path to using it well.
What is Excalidraw and who is it for?
Excalidraw is an infinite-canvas whiteboard, run largely in-browser, that renders strokes with a wobbly, hand-drawn filter. It is aimed at engineers and product folks sketching system architecture, flowcharts or wireframes during a call. The Excalidraw editor also ships a text-to-diagram feature and libraries of prebuilt shapes.
How do I start my first sketch?
- Open excalidraw.com. A blank canvas loads immediately.
- Pick a tool from the top toolbar: rectangle (press 2), arrow (5), text (8), or free draw (7).
- Drag to place shapes. Hold Ctrl while dragging to duplicate.
- Use the arrow tool to connect shapes — endpoints snap to shape edges.
Keyboard shortcuts are where speed comes from. Number keys switch tools, and holding them keeps the tool active. Most people waste the first week reaching for the toolbar.
Is Excalidraw free?
Yes. The core editor is MIT-licensed and free, and there is no account requirement for basic use. The optional Excalidraw+ cloud plan adds team libraries, version history and SSO; pricing runs monthly per user. For individuals, the free tier is enough.
How do I share and export a drawing?
Click the share icon top-right. You get a read-only link, or an editable one for collaboration. For static output, use Export Image to get PNG or SVG. SVG keeps the hand-drawn look while staying scalable.
One limitation: the free cloud sharing keeps files for a limited period, so for long-lived docs, download the .excalidraw file and commit it to your repo. It is readable JSON.
Where does Excalidraw not fit?
It is not a precision tool. Alignment guides are loose, and there is no real auto-layout. If you need to bang out a 40-node network diagram with exact spacing, a diagram-as-code tool will save you hours. Excalidraw is best for the messy thinking stage, not the final spec.
Quick Summary
- Excalidraw is a free, MIT-licensed browser whiteboard with a hand-drawn style; no signup needed to draw.
- Number keys switch tools fast — learn them early.
- Share via link or export PNG/SVG; download the JSON file for permanent storage.
- Great for sketches and discussion, weak for precise auto-laid-out diagrams.
