Yahoo! Japan News reduced CLS by .2, decreasing the number of URLS with poor performance in search console by 98%. As a result, they saw a 15.1% increase in page views per session, 13.3% longer session durations and a 1.72 percentage point decrease in bounce rate. Permalink Share on Twitter

Yelp reduced First Contentful Paint (75th percentile) by 45% and Yelp Page Complete (75th percentile) by 25% and saw a 15% improvement in their conversion rate. Permalink Share on Twitter

Bing observed that an engineer that improves server performance by 10ms (that’s 1/30 of the speed that our eyes blink) more than pays for his fully-loaded annual costs. Every millisecond counts Permalink Share on Twitter

Bridesmaid dress retailer Revelry relaunched its ecommerce site on an updated version of its ecommerce platform and with smaller images. The site loads 43% faster, bounce rates have decreased 8% and conversion is up 30% Permalink Share on Twitter

After making improvements to multiple performance metrics (including LCP, CLS and Long Task time), Agrofy saw a 76% reduction in their abandonment rate and a significant boost in engagement. Permalink Share on Twitter

SportsShoes.com found that faster-than-average mobile visits were 41% more likely to convert than slower-than-average visits. Permalink Share on Twitter

SnipesUSA.com decreased page load speed by 30% and saw its average conversion rate double to from 1% to 2%. Permalink Share on Twitter

Rossignol.com improved their load time by 1.9 seconds and cut their Speed Index by a factor of 10, contributing to a 94% improvement in conversion rate when compared to the year prior. Permalink Share on Twitter

A Google study over millions of page impressions found that when a site meets the recommended thresholds for the Core Web Vitals metrics, users are at least 24% less likely to abandon a page before it finishes loading. Permalink Share on Twitter

ALDO found that on their single-page app, mobile users who experienced fast rendering times brought 75% more revenue than average, and 327% more revenue that those experiencing slow rending times. on desktop, users with fast-rendering times brought in 212% more revenue than average and 572% more than slow. Permalink Share on Twitter