A measured comparison of Figma, tldraw, Excalidraw, and Skedoodle, and the architectural choice that makes the difference. Open your browser. Go to any drawing or whiteboarding app: tldraw, Excalidraw, Figma, whatever you use. Put it on a blank canvas. Don't touch anything. Open your browser's task manager. That app is probably using 1–3% CPU right now. Not the browser as a whole. Not all your tab