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WebSketch Extension Handbook

Welcome to the WebSketch Extension Handbook — your guide to capturing web pages as structured grammar-based intermediate representation (IR) directly from Chrome.

WebSketch Extension is a Chrome extension that captures the DOM of any web page and converts it into WebSketch IR — a grammar-based UI representation designed for LLMs. One click captures the page structure, styles, element bounds, and positioning, then copies the result to your clipboard.

  • Beginners — New to WebSketch? Start here for a guided walkthrough
  • Getting Started — Install, load the extension, and capture your first page
  • Reference — Capture settings, output format, validation, and development workflow