Using the Web Vitals extension to debug Core Web Vitals issues
The Web Vitals extension now shows you more debugging information to help you identify the root causes of Core Web Vitals issues.
Barry Pollard
Web Performance Developer Advocate for Google
Optimize Time to First Byte
Learn how to optimize for the Time to First Byte metric.
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.
Why is CrUX data different from my RUM data?
Learn about reasons why RUM data can show different Core Web Vitals numbers from CrUX.
Optimizing resource loading with the Fetch Priority API
The Fetch Priority API indicates the relative priority of resources to the browser. It can enable optimal loading and improve Core Web Vitals.
Best practices for tags and tag managers
Optimize tags and tag managers for Core Web Vitals.
Best practices for fonts
Optimize web fonts for Core Web Vitals.
Back/forward cache
Optimize your pages for instant loads when using the browser's back and forward buttons.
Optimize Largest Contentful Paint
A step-by-step guide on how to break down LCP and identify key areas to improve.
Optimize Cumulative Layout Shift
Learn how to avoid sudden layout shifts to improve user-experience
Preloading responsive images
Starting in Chrome 73, link rel="preload" and responsive images can be combined in order to load images faster.
Browser-level image lazy loading for the web
Built-in lazy loading is finally here!