{"id":68583,"date":"2021-04-22T14:04:00","date_gmt":"2021-04-22T14:04:00","guid":{"rendered":"https:\/\/morningtrain.dk\/what-are-core-web-vitals\/"},"modified":"2026-04-21T06:26:21","modified_gmt":"2026-04-21T06:26:21","slug":"what-are-core-web-vitals","status":"publish","type":"post","link":"https:\/\/morningtrain.dk\/en\/what-are-core-web-vitals\/","title":{"rendered":"What are Core Web Vitals?"},"content":{"rendered":"\n<section class=\"wp-block-mt-blog-post-cover mt-blog-post-cover\"><div class=\"mt-blog-post-cover__inner page-container\"><div class=\"mt-blog-post-cover__text-container\"><p class=\"mt-blog-post-cover__tagline tagline\">Digitalisering<\/p><p class=\"mt-blog-post-cover__date\">22. april 2021<\/p><h1 class=\"mt-blog-post-cover__title\">What are Core Web Vitals?<\/h1><\/div><div class=\"wp-block-post-excerpt\"><p class=\"wp-block-post-excerpt__excerpt\">Core Web Vitals is a new update to Google\u2019s algorithm that focuses on quality signals related to your website. It is primarily website speed that now plays a bigger role in Google\u2019s assessment of how your website should rank for your keywords. <\/p><\/div>\n\n<figure class=\"wp-block-post-featured-image\"><img decoding=\"async\" width=\"1248\" height=\"720\" src=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/03\/Hvad-er-Core-Web-Vitals.png\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"\" style=\"object-fit:cover;\" srcset=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/03\/Hvad-er-Core-Web-Vitals.png 1248w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/03\/Hvad-er-Core-Web-Vitals-300x173.png 300w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/03\/Hvad-er-Core-Web-Vitals-1024x591.png 1024w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/03\/Hvad-er-Core-Web-Vitals-768x443.png 768w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/03\/Hvad-er-Core-Web-Vitals-187x108.png 187w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/03\/Hvad-er-Core-Web-Vitals-600x346.png 600w\" sizes=\"(max-width: 1248px) 100vw, 1248px\" \/><\/figure><\/div><\/section>\n<section\n    class=\"mt-blog-post-content mt-blog-post-content--has-table-of-contents mtSpacing-top-none mtSpacing-bottom-medium\"\n>\n    <div class=\"mt-blog-post-content__inner page-container\">\n        <div class=\"mt-blog-post-content__table-of-contents\">\n                                                <p class=\"mt-blog-post-content__table-of-contents-title\">\n                        Indhold\n                    <\/p>\n                                                    <a\n                        href=\"#kort\"\n                        class=\"mt-blog-post-content__table-of-contents-item\"\n                    >\n                        Kort og godt\n                    <\/a>\n                                    <a\n                        href=\"#intetnyt\"\n                        class=\"mt-blog-post-content__table-of-contents-item\"\n                    >\n                        Intet nyt under solen\n                    <\/a>\n                                    <a\n                        href=\"#parameter\"\n                        class=\"mt-blog-post-content__table-of-contents-item\"\n                    >\n                        De 3 parameter\n                    <\/a>\n                                    <a\n                        href=\"#hvadbetyderdet\"\n                        class=\"mt-blog-post-content__table-of-contents-item\"\n                    >\n                        Hvad betyder det\n                    <\/a>\n                                    <a\n                        href=\"#goer\"\n                        class=\"mt-blog-post-content__table-of-contents-item\"\n                    >\n                        Hvad kan du g\u00f8re\n                    <\/a>\n                                  <\/div>\n        <div class=\"mt-blog-post-content__items\">\n                            \n\n<p class=\"wp-block-paragraph\" id=\"kort\"><strong>There are 3 metrics that Google looks at:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Largest Contentful Paint (LCP)<\/li>\n\n\n\n<li>First Input Delay (FID)<\/li>\n\n\n\n<li>Cumulative Layout Shift (CLS)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">All three are signals for the experience of visiting your website. LCP and FID indicate your website\u2019s speed, and together they account for 95% of the three. CLS is about whether your website changes <strong>after<\/strong> it has loaded. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The update was rolled out during the second half of 2021.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In other words, <strong>core web vitals<\/strong> is simply part of Google\u2019s algorithm that determines which websites should rank for what.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is not a NEW metric in the algorithm. The update coming in May is simply Google tightening the screws in this direction. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Speed has always been important for <a href=\"https:\/\/morningbound.dk\/onpage-seo-definition\/\">on-page SEO<\/a>, and Google has now given that update a name: Core Web Vitals. \ud83d\ude09<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"819\" height=\"1024\" src=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-2-819x1024-1.png\" alt=\"\" class=\"wp-image-63239\" srcset=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-2-819x1024-1.png 819w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-2-819x1024-1-240x300.png 240w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-2-819x1024-1-768x960.png 768w\" sizes=\"(max-width: 819px) 100vw, 819px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"intetnyt\">More of the same<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There is absolutely NOTHING new under the sun with the update to Google\u2019s algorithm in May (Core Web Vitals).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Core Web Vitals is more of the same we have seen in recent years. And about 95% of the update concerns <strong>website speed<\/strong>, and the remaining 5% goes to CLS\u2014more on that later. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Below is how Core Web Vitals is calculated. Note the <strong>weighting<\/strong> on the right. In other words: it is all about website speed.  <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1080\" height=\"1350\" src=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-3.png\" alt=\"\" class=\"wp-image-63240\" srcset=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-3.png 1080w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-3-240x300.png 240w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2026\/01\/Core-web-vitals-3-819x1024.png 819w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"parameter\">The 3 parameters<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Below is a description of the three parameters referred to when talking about Core Web Vitals. Note that the first two are about <strong>website speed<\/strong>. These are the two that Google has weighted at 95%.  <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Largest Contentful Paint (LCP)<\/strong> \u2013 Measures loading speed. To provide a good user experience, your LCP should be under 2.5 seconds. <\/li>\n\n\n\n<li><strong>First Input Delay (FID) <\/strong>\u2013 Measures how quickly users can interact with the website. To provide <a href=\"https:\/\/morningtrain.dk\/en\/have-you-misunderstood-ux\/har-du-misforstaaet-ux-2\/\" target=\"_blank\" rel=\"noreferrer noopener\">a good user experience<\/a>, your FID should be under 100 milliseconds. <\/li>\n\n\n\n<li><strong>Cumulative Layout Shift (CLS)<\/strong> \u2013 Measures how stable the design is. To provide a good user experience, your CLS should be below 0.1. <\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" width=\"720\" height=\"206\" src=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2021\/04\/Billede2.png\" alt=\"\" class=\"wp-image-27844\" srcset=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2021\/04\/Billede2.png 720w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2021\/04\/Billede2-300x86.png 300w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"hvadbetyderdet\">What does it mean for you?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No one knows the full impact of Core Web Vitals yet, but it looks like Google is now starting to penalize websites that score \u201cBAD\u201d on speed. Those in \u201cImprove\u201d will likely feel like they are working slightly against the wind. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Google has been gearing up for a long time to do something truly serious about speed in its algorithm. And we believe Core Web Vitals is the beginning of speed playing a significant role. So if your website looks like this in the Google PageSpeed test, you need to work on website speed:  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are in the \u201cgreen,\u201d however, Core Web Vitals <strong>will not <\/strong>make any difference for you.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"goer\">What can you do from here<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Go and scan your website at: <strong><a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/developers.google.com\/speed\/pagespeed\/insights\/<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Then sing a song while you wait for the scan to finish (talking about page speed here, Google \ud83d\ude09).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read this post, <a href=\"https:\/\/morningtrain.dk\/en\/8-improvements-you-can-make-to-your-core-web-vitals\/\" type=\"post\" id=\"63238\">where we have given you 8 concrete things<\/a> that should be done on your website in relation to Core Web Vitals.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The result will look something like the image below. Here you can read the three highlighted parameters: <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" width=\"602\" height=\"307\" src=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2021\/04\/Billede3.png\" alt=\"\" class=\"wp-image-27849\" srcset=\"https:\/\/morningtrain.dk\/wp-content\/uploads\/2021\/04\/Billede3.png 602w, https:\/\/morningtrain.dk\/wp-content\/uploads\/2021\/04\/Billede3-300x153.png 300w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Google has made it easy with <strong>colour-coding<\/strong> of its messages, and anything green should simply be left alone.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are in the red, you need to make some changes where your website is failing. Most often, it is within: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>How large files need to be loaded (Largest Contentful Paint) \u2013 Images and video files<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>First Input Delay (FID) \u2013 server setup and codebase<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Half of you reading this and running a scan will see that \u201cyou are all good.\u201d The other half should roll up your sleeves. Core Web Vitals is an important part of your technical SEO; if you want to read about the other aspects, we have written a blog post about technical SEO.  <\/p>\n\n\n                                            <\/div>\n        <div class=\"mt-blog-post-content__small-related-posts\">\n                                <\/div>\n    <\/div>\n    <\/section>\n\n","protected":false},"excerpt":{"rendered":"<p>Core Web Vitals is a new update to <a href=\"https:\/\/morningtrain.dk\/en\/what-is-google\/hvad-er-google-2\/\">Google\u2019s<\/a> algorithm that focuses on quality signals related to your website. It is primarily website speed that now plays a bigger role in Google\u2019s assessment of how your website should rank for your keywords. <\/p>\n","protected":false},"author":2,"featured_media":68584,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[285],"tags":[],"class_list":["post-68583","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-digitalization"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What are Core Web Vitals? - Morningtrain<\/title>\n<meta name=\"description\" content=\"Core Web Vitals is an update to Google\u2019s algorithm that focuses on quality signals related to your website.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/morningtrain.dk\/en\/what-are-core-web-vitals\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are Core Web Vitals? 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