Carousell reduced page load time by 65% and saw a 63% increase in organic traffic, a 3x increase in advertising click-thru rate and a 46% increase in first-time chatters. Permalink Share on Twitter

Web studio Sparkbox more than doubled Driver Solutions’ conversion rate for organic traffic, moving it from 2.69% to 5.57% after deploying performance updates and AMP pages. Permalink Share on Twitter

Zalando saw a 0.7% increase in revenue when they shaved 100ms off their load time. Permalink Share on Twitter

Tokopedia reduced render time from 14s to 2s for 3G connections and saw a 19% increase in visitors, 35% increase in total sessions, 7% increase in new users, 17% increase in active users and 16% increase in sessions per user. Permalink Share on Twitter

Fashion retailer Missguided removed BazaarVoice for Android visitors. Median page load time improved by 4 seconds, and revenue increased by 26% Permalink Share on Twitter

Furniture retailer Zitmaxx Wonen reduced their typical load time to 3 seconds and saw conversion jump 50.2%. Overall revenue from the mobile site also increased by 98.7%. Permalink Share on Twitter

COOK increased conversion rate by 7% after cutting average page load time by 0.85 seconds. Bounce rate also fell by 7% and pages per session increased by 10%. Permalink Share on Twitter

Rebuilding Pinterest pages for performance resulted in a 40% decrease in wait time, a 15% increase in SEO traffic and a 15% increase in conversion rate to signup. Permalink Share on Twitter

Tests of the new, faster FT.com showed users were up to 30% more engaged—meaning more visits and more content being consumed. Permalink Share on Twitter

BBC has seen that they lose an additional 10% of users for every additional second it takes for their site to load Permalink Share on Twitter