{"id":119500,"date":"2021-07-30T23:55:00","date_gmt":"2021-07-31T04:55:00","guid":{"rendered":"https:\/\/wpengine.com\/?post_type=resource&p=119500"},"modified":"2025-05-13T10:20:13","modified_gmt":"2025-05-13T15:20:13","slug":"measuring-and-improving-site-performance-core-web-vitals","status":"publish","type":"resource","link":"https:\/\/wpengine.com\/resources\/measuring-and-improving-site-performance-core-web-vitals\/","title":{"rendered":"Measuring and Improving Site Performance With Core Web Vitals"},"content":{"rendered":"\n

Editor’s note:<\/strong> in March 2024 First Input Delay (FID) will be officially replaced with a new and pending Core Web Vitals metric, Interaction to Next Paint (INP). According to web.dev<\/a>, “INP assesses responsiveness using data from the Event Timing API. When an interaction causes a page to become unresponsive, that is a poor user experience. INP observes the latency of all interactions a user has made with the page, and reports a single value which all (or nearly all) interactions were below. A low INP means the page was consistently able to respond quickly to all\u2014or the vast majority\u2014of user interactions.” Read more about how this change in Google’s page experience metrics will impact the Core Web Vitals that are essential to website performance in 2024<\/a>. <\/p>\n\n\n\n

Since the dawn of the Internet, improvements to website performance have mainly been focused on speed. <\/p>\n\n\n\n

While speed is certainly important, today\u2019s definition of website performance should also include an emphasis on the overall end-user or page experience encountered by a site visitor.<\/p>\n\n\n\n

This ebook, which was co-authored with Google<\/a> and 10up<\/a>, a WP Engine Agency Partner<\/a>,  explains why website performance matters more than ever, with specific steps site owners and developers can take to measure and improve website performance using Core Web Vitals.<\/p>\n\n\n\n

Download the ebook now to read the full report!<\/strong><\/p>\n\n\n\n\n\n

Why Website Performance Matters<\/strong><\/h2>\n\n\n\n

Beyond the importance of search engine rankings, building high-performing sites with a focus on page experience affects that crucial moment when a user decides to further engage with you, either by consuming additional content or making a purchase. <\/p>\n\n\n\n

Speed is important here, as fast-loading sites prevent users from exiting a page or abandoning a shopping cart. However,  in order to provide an exceptional page experience for each and every user, performance should also include additional factors aimed at creating visually stable websites that are responsive on any device.<\/p>\n\n\n\n

Core Web Vitals offer a framework for creating sites that check all of these boxes. For site owners and developers, this larger view of performance must be front and center in order to create new and innovative experiences that engage users while increasing business-driven metrics.<\/p>\n\n\n\n

Measuring Page Experience<\/strong><\/h2>\n\n\n\n

Optimizing for page experience is key to the long-term success of any site. Getting it right requires appropriate focus on the right areas as well as ongoing attention and investment. <\/p>\n\n\n\n

Core Web Vitals have been introduced with this in mind, and represent a larger effort to provide unified guidance for quality signals that are essential to delivering a great page experience. <\/p>\n\n\n\n

While the list is set to evolve over time<\/a>, Core Web Vitals currently measure page experience using the following three metrics: <\/p>\n\n\n\n

\"List<\/figure>\n\n\n\n