{"id":18960,"date":"2020-05-29T10:58:33","date_gmt":"2020-05-29T15:58:33","guid":{"rendered":"https:\/\/www.mediavine.com\/?p=18960"},"modified":"2020-11-18T08:23:11","modified_gmt":"2020-11-18T14:23:11","slug":"lighthouse-6-web-vitals","status":"publish","type":"post","link":"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/","title":{"rendered":"Google&#8217;s Core Web Vitals: What You Need to Know"},"content":{"rendered":"\r\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:0;padding-bottom:0\">\r\n<article class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\r\n<section class=\"wp-block-group alignfull is-style-beige has-global-padding is-layout-constrained wp-container-core-group-is-layout-772205c6 wp-block-group-is-layout-constrained is-style-beige--1\" style=\"padding-top:var(--wp--preset--spacing--50)\">\r\n<header class=\"wp-block-group c-breadcrumbs aligngrid has-global-padding is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-61973aa6 wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0\">\r\n<header class=\"wp-block-group aligngrid is-content-justification-left is-nowrap is-layout-flex wp-container-core-group-is-layout-d68226ec wp-block-group-is-layout-flex\" style=\"margin-top:0;margin-bottom:var(--wp--preset--spacing--30)\">\r\n<figure class=\"wp-block-image size-large is-resized\" style=\"margin-bottom:5px\"><img decoding=\"async\" src=\"https:\/\/mediavine-dev.d1.moderntribe.qa\/wp-content\/uploads\/2025\/10\/chevron-left2.svg\" alt=\"\" class=\"wp-image-542\" style=\"aspect-ratio:9\/16;object-fit:contain;width:auto;height:20px\"\/><\/figure>\r\n\r\n\r\n\r\n<p class=\"is-style-small is-style-small--2\"><a href=\"\/blog\/\">Back to Blog<\/a><\/p>\r\n<\/header>\r\n\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity aligngrid\" style=\"margin-top:0;margin-bottom:0\"\/>\r\n<\/header>\r\n<\/section>\r\n\r\n\r\n\r\n<section class=\"wp-block-group alignfull is-style-default has-neutral-20-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-bottom:var(--wp--preset--spacing--70);padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--60)\"><div class=\"aligncenter aligncenter wp-block-tribe-terms\"><ul class=\"wp-block-tribe-terms__list\"><li class=\"wp-block-tribe-terms__term\"><span class=\"wp-block-tribe-terms__link t-category\">Pagespeed<\/span><\/li><\/ul><\/div>\r\n\r\n<h1 style=\"margin-top:var(--wp--preset--spacing--10);\" class=\"has-text-align-center wp-block-post-title\">Google&#8217;s Core Web Vitals: What You Need to Know<\/h1>\r\n\r\n\r\n<div class=\"wp-block-group is-content-justification-center is-nowrap is-layout-flex wp-container-core-group-is-layout-9b38c6d9 wp-block-group-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--30);margin-bottom:0;padding-top:0;padding-bottom:0\"><div style=\"margin-bottom:0;margin-top:0;margin-left:0;margin-right:0;\" class=\"has-text-align-center wp-block-post-author-name\">Jordan Cauley<\/div>\r\n\r\n\r\n<p>\u2022<\/p>\r\n\r\n\r\n<div style=\"padding-top:0;padding-bottom:0;padding-left:0;padding-right:0;margin-top:0;margin-bottom:0;margin-left:0;margin-right:0;\" class=\"has-text-align-center wp-block-post-date has-10-font-size\"><time datetime=\"2020-05-29T10:58:33-05:00\">May 29, 2020<\/time><\/div><\/div>\r\n<\/section>\r\n\r\n\r\n\r\n<section class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">As we discussed earlier this month, Google has updated Pagespeed Insights (PSI) to incorporate <a href=\"https:\/\/www.mediavine.com\/lighthouse-version-6-changes-whats-new-for-content-creators\/\">Lighthouse 6<\/a>.\n\nLighthouse is Google&#8217;s open-source tool for improving the quality of web pages. Its latest version brings a number of key changes, among them the newly-launched Core Web Vitals incorporated into <a href=\"https:\/\/www.mediavine.com\/google-search-console-new-video-features-for-even-better-results\/\">Google Search Console<\/a>.\n\n<!--more-->\n<h3>What are Web Vitals?<\/h3>\nThere is almost nothing that Google loves more than performance metrics and associated acronyms, so it&#8217;s little surprise that they&#8217;ve introduced some new ones and rolled them into a new grouping called Web Vitals.\n\n<a href=\"https:\/\/web.dev\/vitals\/\" target=\"_blank\" rel=\"noopener noreferrer\">Web Vitals<\/a> is a group comprised of three important metrics:\n<ol>\n \t<li>Largest Contentful Paint (LCP): A measure of load performance, generally gauging whether your largest content load happens with 2.5 seconds.<\/li>\n \t<li>First Input Delay (FID): A measure of interactivity, or the idea that when a user taps on something, the browser should respond nearly instantly.<\/li>\n \t<li>Cumulative Layout Shift (CLS): A measure of visual stability, or the concept that items in the browser window shouldn&#8217;t move as a page loads.<\/li>\n<\/ol>\nBelow, we&#8217;ll break down all three in a bit more detail \u2014 beginning with the old standbys and ending with the newer CLS \u2014 and what you can do to improve results to achieve <a href=\"https:\/\/www.mediavine.com\/improve-site-speed-and-gpsi-score\/\">optimal pagespeed<\/a>.\n\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18977 size-full\" src=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2020\/05\/Lighthouse-6-Pin.png\" alt=\"Mediavine Pinterest image - Google's Lighthouse 6 updatse: What you need to know about pagespeed\" width=\"1000\" height=\"1500\" data-pin-title=\"Google's Lighthouse 6 Updates: What you need to know about your pagespeed\" srcset=\"https:\/\/www.mediavine.com\/wp-content\/uploads\/2020\/05\/Lighthouse-6-Pin.png 1000w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2020\/05\/Lighthouse-6-Pin-200x300.png 200w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2020\/05\/Lighthouse-6-Pin-307x460.png 307w, https:\/\/www.mediavine.com\/wp-content\/uploads\/2020\/05\/Lighthouse-6-Pin-768x1152.png 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/>\n<h3>Largest Contentful Paint (LCP)<\/h3>\nDespite its word salad of a name, Largest Contentful Paint is a fairly simple concept and if you&#8217;re reading this, you&#8217;re likely already taking a lot of steps to improve it. Bettering LCP scores requires a lot of traditional page load advice.\n\nBy that, we mean steps like using a CDN and\/or <a href=\"https:\/\/www.mediavine.com\/what-is-a-cache\/\">caching<\/a> plugin, pre-loading or pre-connecting to third-party scripts and images, minifying or reducing CSS, thinking critically about <a href=\"https:\/\/www.mediavine.com\/how-to-do-a-plugin-self-audit\/\">what plugins you&#8217;re running<\/a>, and making sure your <a href=\"https:\/\/www.mediavine.com\/learn-about-web-hosting\/\">host<\/a> is using http\/2 and gzip.\n\nOther measures you can take to improve LCP include making sure your images are optimized with modern formats and not loading unnecessarily large images. Also, try to avoid using large, edge-to-edge background images.\n\nIf you do have larger assets you need in the content, try to avoid using them in the first couple of screen views. Let <a href=\"https:\/\/www.mediavine.com\/lazy-loading-video-player\/\">lazy loading<\/a> do what it&#8217;s designed to do and reap the benefits of higher pagespeed scores.\n<h3>First Input Delay (FID)<\/h3>\nFirst input delay is another metric that has a been around for awhile. It measures how long before a page becomes &#8220;interactive&#8221; and can receive input events, such as scrolling the page, clicking links or typing in forms.\n\nAs you&#8217;ve probably heard before, it pays dividends to make sure any JavaScript on your pages is minified and deferred if possible. As always, think critically about the plugins and tools you&#8217;re loading on your pages.\n\n<em>Try to keep only the things that provide the most value.<\/em>\n<h3>Cumulative Layout Shift (CLS)<\/h3>\nThe first two items aren&#8217;t particularly new and, for the most part, folks aren&#8217;t seeing major new items in these values. However, the advent of CLS has been a bit of a surprise and caused a little bit of concern.\n\nIt is important to remember when considering Cumulative Layout Shift is that it&#8217;s calculated based on visual changes to the page, when those changes take place inside the viewport or browser window.\n\n<em>This means that well-managed, lazy-loaded content should not impact your CLS score in most cases.<\/em>\n\nIf the content is loaded and finishes rendering to the page before it comes into view, it should not impact your CLS score. That said, there are steps you can take to help reduce your chances of CLS issues:\n<ul>\n \t<li>Make sure what you use for lazy-loaded images or iframes uses a match size placeholder or includes height and width attributes.<\/li>\n \t<li>Ensure web fonts are being loaded as early as possible. Here&#8217;s a link with helpful details on <a href=\"https:\/\/web.dev\/optimize-cls\/\" target=\"_blank\" rel=\"noopener noreferrer\">advanced font strategies<\/a>.<\/li>\n \t<li>On our end, Mediavine is working on additional CLS optimizations to improve our ad load performance as well.<\/li>\n<\/ul>\nThe Web Vitals description of CLS reads like it might make <a href=\"https:\/\/www.mediavine.com\/lazy-loading-ads-mediavine-ads-load-200-faster\/\">lazy loading<\/a> a bad thing, but in reality, it prioritizes u<em>sing lazy loading effectively<\/em>.\n\nAdditionally, even if your CLS number is a little low, removing lazy loading from pages will likely impact your score even more than having a imperfect CLS number, so remember the big picture and don&#8217;t panic.\n\nThe guidance provided by these tools generally dovetails with <a href=\"https:\/\/www.mediavine.com\/mediavines-pagespeed-resources\/\">Mediavine pagespeed resources<\/a> and advice you&#8217;ve heard a lot over the years. As always, we&#8217;re here to help navigate these changes and make your sites lighter and faster, however we can.<\/section>\r\n\r\n\r\n\r\n<section class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\r\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-09aec4f2 wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--40);padding-top:var(--wp--preset--spacing--50);padding-right:0;padding-bottom:var(--wp--preset--spacing--60)\">\r\n<p class=\"is-style-small is-style-small--3\">About the author<\/p>\r\n\r\n\r\n<div style=\"margin-top:var(--wp--preset--spacing--20);\" class=\"wp-block-post-author\"><div class=\"wp-block-post-author__avatar\"><img alt='' src='https:\/\/secure.gravatar.com\/avatar\/461f94ed3ee615a6225f959567045e9fca6d7097a7b2390debf3a9c731cf6401?s=96&#038;d=blank&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/461f94ed3ee615a6225f959567045e9fca6d7097a7b2390debf3a9c731cf6401?s=192&#038;d=blank&#038;r=g 2x' class='avatar avatar-96 photo' height='96' width='96' \/><\/div><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\"><a href=\"https:\/\/www.mediavine.com\/blog\/author\/jordan\/\" target=\"_self\">Jordan Cauley<\/a><\/p><p class=\"wp-block-post-author__bio\"><\/p><\/div><\/div><\/div>\r\n\r\n\r\n\r\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-7c04bf6b wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\r\n<p class=\"is-style-small is-style-small--4\">Share this page<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-outermost-social-sharing has-normal-icon-size has-icon-color is-style-logos-only is-content-justification-left is-layout-flex wp-container-outermost-social-sharing-is-layout-9d3a6402 wp-block-social-sharing-is-layout-flex\" 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16.699234 16.690438 16.137687 16.898438 15.554688 C 17.106437 14.971687 17.106922 14.470187 17.044922 14.367188 C 16.982922 14.263188 16.816406 14.201172 16.566406 14.076172 C 16.317406 13.951172 15.090328 13.348625 14.861328 13.265625 C 14.632328 13.182625 14.464828 13.140625 14.298828 13.390625 C 14.132828 13.640625 13.655766 14.201187 13.509766 14.367188 C 13.363766 14.534188 13.21875 14.556641 12.96875 14.431641 C 12.71875 14.305641 11.914938 14.041406 10.960938 13.191406 C 10.218937 12.530406 9.7182656 11.714844 9.5722656 11.464844 C 9.4272656 11.215844 9.5585938 11.079078 9.6835938 10.955078 C 9.7955938 10.843078 9.9316406 10.663578 10.056641 10.517578 C 10.180641 10.371578 10.223641 10.267562 10.306641 10.101562 C 10.389641 9.9355625 10.347156 9.7890625 10.285156 9.6640625 C 10.223156 9.5390625 9.737625 8.3065 9.515625 7.8125 C 9.328625 7.3975 9.131125 7.3878594 8.953125 7.3808594 C 8.808125 7.3748594 8.6425625 7.375 8.4765625 7.375 z\"><\/path><\/svg>\t\t<span class=\"wp-block-outermost-social-sharing-link-label screen-reader-text\">\n\t\t\tShare on WhatsApp\t\t<\/span>\n\t<\/a>\n<\/li>\n<\/ul>\r\n<\/div>\r\n<\/section>\r\n<\/article>\r\n\r\n\r\n\r\n<aside class=\"wp-block-group aligngrid  is-animated-on-scroll-25 tribe-animation-type-fade-in tribe-animation-direction-bottom is-layout-flow wp-block-group-is-layout-flow\" style=\"margin-top:var(--wp--preset--spacing--40);margin-bottom:0;padding-top:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--50);--tribe-animation-speed:0.6s;--tribe-animation-offset:50px;--tribe-animation-delay:0s;--tribe-animation-easing:var(--easing--ease-out-sine)\">\r\n<h2 class=\"wp-block-heading is-style-small is-style-small--5\" id=\"h-related-posts\" style=\"margin-top:0;margin-bottom:var(--wp--preset--spacing--40)\">Related Posts<\/h2>\r\n\r\n\r\n<div style=\"margin-bottom:0;\" class=\"b-related-posts b-related-posts--layout-grid  wp-block-tribe-related-posts\">\n\t\t\t\t\t<article 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We&#8217;ve all seen the headlines questioning the future of organic search, the impact on creators&#8217; livelihoods and content ownership, the challenge of&#8230;<\/p>\n\t\t\t<\/div>\n\t<a href=\"https:\/\/www.mediavine.com\/blog\/5-ways-chatgpt-increase-productivity\/\" class=\"c-post-card__link-overlay\" aria-label=\"Read more about 5 Ways Bloggers Can Use ChatGPT to Increase Productivity\"><\/a>\n<\/article>\n\t<\/div>\n<\/aside>\r\n<\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>Back to Blog \u2022 As we discussed earlier this month, Google has updated Pagespeed Insights (PSI) to incorporate Lighthouse 6. Lighthouse is Google&#8217;s open-source tool for improving the quality of web pages. Its latest version brings a number of key changes, among them the newly-launched Core Web Vitals incorporated into Google Search Console. As we&#8230;<\/p>\n","protected":false},"author":44463,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":"","footnotes":""},"categories":[60,94],"tags":[],"audience_post":[],"class_list":["post-18960","post","type-post","status-publish","format-standard","hentry","category-general-blogging","category-pagespeed"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Google&#039;s Core Web Vitals: What You Need to Know - Mediavine<\/title>\n<meta name=\"description\" content=\"Google has updated PSI to include Lighthouse 6, now with Core Web Vitals. Learn what they are and what you can do to improve results for optimal pagespeed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Google&#039;s Core Web Vitals: What You Need to Know\" \/>\n<meta property=\"og:description\" content=\"Google has updated PSI to include Lighthouse 6, now with Core Web Vitals. Learn what they are and what you can do to improve results for optimal pagespeed.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/\" \/>\n<meta property=\"og:site_name\" content=\"Mediavine\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/mediavinepublishernetwork\/\" \/>\n<meta property=\"article:published_time\" content=\"2020-05-29T15:58:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-11-18T14:23:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mediavine-dev.d1.moderntribe.qa\/wp-content\/uploads\/2025\/10\/chevron-left2.svg\" \/>\n<meta name=\"author\" content=\"Jordan Cauley\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@mediavine\" \/>\n<meta name=\"twitter:site\" content=\"@mediavine\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jordan Cauley\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/\"},\"author\":{\"name\":\"Jordan Cauley\",\"@id\":\"https:\/\/www.mediavine.com\/#\/schema\/person\/a8ec2f0aa655373adac113f3ee4ce39a\"},\"headline\":\"Google&#8217;s Core Web Vitals: What You Need to Know\",\"datePublished\":\"2020-05-29T15:58:33+00:00\",\"dateModified\":\"2020-11-18T14:23:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/\"},\"wordCount\":776,\"publisher\":{\"@id\":\"https:\/\/www.mediavine.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/mediavine-dev.d1.moderntribe.qa\/wp-content\/uploads\/2025\/10\/chevron-left2.svg\",\"articleSection\":[\"General Blogging\",\"Pagespeed\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/\",\"url\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/\",\"name\":\"Google's Core Web Vitals: What You Need to Know - Mediavine\",\"isPartOf\":{\"@id\":\"https:\/\/www.mediavine.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.mediavine.com\/blog\/lighthouse-6-web-vitals\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/mediavine-dev.d1.moderntribe.qa\/wp-content\/uploads\/2025\/10\/chevron-left2.svg\",\"datePublished\":\"2020-05-29T15:58:33+00:00\",\"dateModified\":\"2020-11-18T14:23:11+00:00\",\"description\":\"Google has updated PSI to include Lighthouse 6, now with Core Web Vitals. 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