Capsule Highlighter is a free Chrome add-on designed for Aritzia's internal use, enabling users to visually highlight and analyze frontend components on the A.com platform. This tool provides a comprehensive overlay that marks Capsule design system components and custom or PWA components, facilitating easier identification and differentiation of UI elements. Users can simply click the toolbar icon to activate this feature, ensuring a seamless experience.

In addition to visual highlighting, Capsule Highlighter offers an action menu that includes a Coverage Panel, which displays counts of different component types and provides a Capsule versus custom adoption ratio. The tool operates entirely within the browser without making network calls, ensuring privacy and efficiency. It also allows users to export a JSON snapshot for audits, making it an invaluable asset for engineering, design, and QA teams to monitor component usage and track migration progress.