Google PageSpeed Insights is a free tool that helps website owners analyze the speed and performance of their sites. By entering a URL, users receive a detailed report that highlights how quickly their page loads on both mobile and desktop devices. The tool provides scores from 0 to 100, with higher scores indicating better performance. In addition to speed scores, PageSpeed Insights offers suggestions for improvement. These recommendations can include optimizing images, reducing server response times, and leveraging browser caching. By following these tips, website owners can enhance user experience and potentially improve their search engine rankings.