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Learn what improvements can have the greatest impact on your site's performance
- We download and modify your code to use performance best practices
- Run Lighthouse on the modified page, to measure the impact on performance
Testing uses Google PageSpeed Insights for mobile
Partytown 🎉 highlighted in Smashing Magazine
"Builder.io aims to make high performance the default. Partytown is pivotal in making near-zero-JavaScript websites attainable for anyone."
Steve Sewell, Builder's CEO on Smashing Magazine
Put simply: slow sites deter visitors, costing conversions
Every 100ms faster → 1% more conversions
For Mobify, every 100ms decrease in homepage load speed worked out to a 1.11% increase in session-based conversion, yielding an average annual revenue increase of nearly $380,000.
50% faster → 12% more sales
When AutoAnything reduced page load time by half, they saw a boost of 12% to 13% in sales.
20% faster → 10% more conversions
Retailer Furniture Village audited their site speed and developed a plan to address the problems they found, leading to a 20% reduction in page load time and a 10% increase in conversion rate.
40% faster → 15% more signups
Pinterest reduced perceived wait times by 40% and this increased search engine traffic and sign-ups by 15%.
850ms faster → 7% more conversions
COOK reduced average page load time by 850 milliseconds which increased conversions by 7%, decreased bounce rates by 7%, and increased pages per session by 10%.
1 seconds slowness → 10% less users
The BBC found they lost an additional 10% of users for every additional second their site took to load.
Source: web.dev
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