gtmetrix.com

GTmetrix is a web performance testing tool analyzing page load speed and providing detailed recommendations for optimization based on waterfall charts and video playback of page loading. The platform tests from multiple global locations and browsers while providing historical tracking to monitor performance trends over time. GTmetrix Reports include waterfall diagrams showing the loading sequence of each page element and recommendations prioritized by impact. Developers and site owners use GTmetrix alongside other tools to comprehensively optimize web page performance.