tldraw is an innovative AI-powered whiteboard and infinite canvas platform that transforms how designers and developers prototype and collaborate. Founded by Steve Ruiz in 2022 and based in London, the company has raised $14.1 million from investors including Lux Capital, Amplify Partners, and Definition Capital. The flagship feature, Make Real, allows users to draw a UI sketch directly on the canvas and convert it into a working HTML/CSS prototype using AI models from OpenAI and Anthropic. Because tldraw's canvas is built with regular HTML, it supports iframes natively, enabling generated website outputs to appear as interactive shapes on the canvas. Users can mark up generated results with notes and revisions, then send them back as new prompts, creating an iterative design-to-code conversation. The tldraw SDK is an open-source infinite canvas framework for React, used by developers to embed collaborative whiteboard functionality into their own applications. It includes real-time collaboration with live cursors, viewport following, and cursor chat. The free whiteboard at tldraw.com requires no sign-up and provides instant access to drawing, diagramming, and AI prototyping features. Commercial SDK licensing is available for teams building products with the tldraw canvas.