Deploying AVIF for more responsive websites
An update on how AVIF has been adopted in the ecosystem.
Advancing Interaction to Next Paint
INP is no longer experimental. Learn about Chrome's plan to make it a Core Web Vital in 2024.
Client-side rendering of HTML and interactivity
Rendering HTML with JavaScript is different than rendering HTML that's sent by the server—and that can affect performance. Learn the difference in this guide, and what you can do to preserve your website's rendering performance—especially where interactions are concerned.
Diagnose slow interactions in the lab
Learn how to take your field data into the lab to reproduce and identify the causes behind slow interactions.
How large DOM sizes affect interactivity, and what you can do about it
Large DOM sizes have more of an effect on interactivity than you might think. This guide explains why, and what you can do.
Find slow interactions in the field
Learn how to find slow interactions in your website's field data so you can find opportunities to improve its Interaction to Next Paint.
Optimize input delay
Find out what input delay is, and learn techniques to reduce it for faster interactivity.
Script evaluation and long tasks
When loading scripts, it takes time for the browser to evaluate them prior to execution, which can cause long tasks. Learn how script evaluation works, and what you can do to keep it from causing long tasks during page load.
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.
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.
Optimize Interaction to Next Paint
Learn how to optimize your website's Interaction to Next Paint.
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.
Optimize long tasks
You've been told "don't block the main thread" and "break up your long tasks", but what does it mean to do those things?
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 the BBC is rolling out HSTS for better security and performance.
The BBC is rolling out HSTS for their website to improve security and performance. Find out what it means, and how HSTS can help you.
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.
GOV.UK drops jQuery from their front end.
GOV.UK dropped their jQuery dependency from their front end. You'll never
guess what happened. (Yes, you will.)
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.
Make your site picture perfect with images.tooling.report
Check out the state of image tooling.
Deep-copying in JavaScript using structuredClone
The Platform now ships with structuredClone(), a built-in function for deep-copying.
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.
