YSlow

YSlow is a tool used to analyze how well a website performs in terms of speed and efficiency. It examines various factors, such as the size of files, server response times, and how the site is built, to identify areas that can be optimized. By providing suggestions, YSlow helps website developers improve loading times and overall user experience. Think of it as a digital health check for websites, guiding improvements to make pages faster, more responsive, and better for visitors.