CrUX Core Web Vitals Viewer is a free Chrome add-on designed to provide users with essential insights into web performance metrics. This tool enables users to view Core Web Vitals, which are crucial indicators of the user experience on a website. By analyzing metrics for both desktop and mobile versions of the current page, users can gain a comprehensive understanding of how well their site performs in real-world conditions.

The add-on specifically displays Chrome User Experience (CrUX) metrics, allowing users to assess their site's performance against established benchmarks. This functionality can aid developers and site owners in identifying areas for improvement, ensuring an optimal experience for users. With its straightforward interface and focused features, the CrUX Core Web Vitals Viewer serves as a valuable resource for anyone looking to enhance their website's performance.