A client's website was suffering from severe load delays and failing Core Web Vitals, which actively harmed their Google rankings and user retention. Here is how I engineered a high performance turnaround: 1. Forensic Speed Audit: Conducted a deep dive to identify and eliminate render blocking JavaScript. 2. Advanced Caching Setup: Configured robust server side caching to drastically improve load times. 3. Next Gen Media Conversion: Executed a site wide conversion of heavy images into WebP formats, cutting page weight significantly with zero quality loss. The site now achieves stable 90+ Google PageSpeed Insights scores on both mobile and desktop. All Core Web Vitals errors are fully resolved, and organic search visibility is restored.