Optimize Time to First Byte
Learn how to optimize for the Time to First Byte metric.
Web Vitals
Our latest news, updates, and stories about Web Vitals.
Our top Core Web Vitals recommendations for 2023
A collection of the best practices that the Chrome DevRel team believes are the most effective ways to improve Core Web Vitals performance in 2023.
Optimize Interaction to Next Paint
Learn how to optimize for the Interaction to Next Paint metric.
Building a Better Web - Part 1: A faster YouTube on web
A case study of changes the YouTube Web team made to improve performance, increase their Core Web Vitals pass rates and lift key business metrics.
How Rakuten 24's investment in Core Web Vitals increased revenue per visitor by 53.37% and conversion rate by 33.13%
By measuring real users' Web Vitals, Rakuten 24 also found that a good Largest Contentful Paint (LCP) can lead to a conversion rate increase of 61.13%.
Why is CrUX data different from my RUM data?
Learn about reasons why RUM data can show different Core Web Vitals numbers from CrUX.
How GoDaddy's Websites + Marketing service improved customer Core Web Vitals by 75%
A case study of changes GoDaddy implemented to improve website performance for millions of sites, helping them to achieve good PageSpeed Insights and Core Web Vitals scores.
Luxury retailer Farfetch sees higher conversion rates for better Core Web Vitals
How the e-commerce fashion retailer correlated Core Web Vitals and performance metrics with business metrics, saw an increase in KPIs and built a "Performance Business Case Calculator" to drive product decisions and a performance culture.
Don't fight the browser preload scanner
Find out what the browser preload scanner is, how it helps performance, and how you can stay out of its way.
How RebelMouse grew loyalty and engagement by optimizing Core Web Vitals
A case study measuring the full impact and benefits of high performance scores on Core Web Vitals.
How The Economic Times passed Core Web Vitals thresholds and achieved an overall 43% better bounce rate
Optimizing Core Web Vitals on The Economic Times website significantly improved the user experience and substantially reduced bounce rate across the entire website.
How QuintoAndar increased conversion rates and pages per session by improving page performance
A project focused on optimizing Core Web Vitals and migrating to Next.js resulted in a 5% increase in conversion rates and a 87% increase in pages per session.
Improving Core Web Vitals on the Mail.ru home page resulted in an average 10% increase in conversion rates
Several months of work to improve Core Web Vitals on the home page of Mail.ru resulted in a 60% increase in the 75th percentile in Cumulative Layout Shift (CLS), boosting average session time by 2.7% and conversion rates of core sections by more than 10%.
What's new in PageSpeed Insights
Learn about the latest in PageSpeed Insights to help you better measure and optimize your page and site quality.
Feedback wanted: An experimental responsiveness metric
An update on our plans for measuring responsiveness on the web.
Lighthouse user flows
Try out a new Lighthouse API to measure performance and best practices throughout a user flow.
Towards an animation smoothness metric
Learn about measuring animations, how to think about animation frames, and overall page smoothness.
How Renault improved its bounce and conversion rates by measuring and optimizing Largest Contentful Paint
The team analyzed data from 10 million visits on its landing pages and found a strong correlation between Largest Contentful Paint and conversion rate.
Best practices for using third-party embeds
An overview of techniques to load popular third-party embeds efficiently.
How Swappie increased mobile revenue by 42% by focusing on Core Web Vitals
Finding correlation between site performance and business metrics was the key to driving the success of their optimization efforts.
How SPA architectures affect Core Web Vitals
Answers to common questions about SPAs, Core Web Vitals, and Google's plan to address current measurement limitations.
Why lab and field data can be different (and what to do about it)
Learn why tools that monitor Core Web Vitals metrics may report different numbers, and how to interpret those differences.