{"id":8003,"date":"2026-02-05T10:30:00","date_gmt":"2026-02-05T16:30:00","guid":{"rendered":"https:\/\/royalestudios.com\/blog\/website-speed-core-web-vitals\/"},"modified":"2026-11-09T21:46:47","modified_gmt":"2026-11-10T03:46:47","slug":"website-speed-core-web-vitals","status":"publish","type":"post","link":"https:\/\/royalestudios.com\/en\/blog\/website-speed-core-web-vitals\/","title":{"rendered":"Your website&#8217;s speed: how to measure and improve it (Core Web Vitals)"},"content":{"rendered":"<p>Every second a website takes to load counts. People leave slow pages, especially on their phones, and Google treats the loading experience as one of the signals for ranking results. A fast site sells more, ranks better and comes across as professional.<\/p>\n<p><strong>A website&#8217;s speed depends on its hosting, the weight of its images, how much code it loads and how caching is set up; improving it is technical work, but the results are noticeable right away.<\/strong><\/p>\n<h2>1. How to measure your site&#8217;s speed<\/h2>\n<p>Free tools such as Google&#8217;s PageSpeed Insights analyze your page and show the Core Web Vitals, the metrics Google uses to evaluate the experience:<\/p>\n<table>\n<thead>\n<tr>\n<th>Metric<\/th>\n<th>What it measures<\/th>\n<th>Target<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>LCP (Largest Contentful Paint)<\/td>\n<td>How long the main element takes to appear.<\/td>\n<td>Under 2.5 s<\/td>\n<\/tr>\n<tr>\n<td>INP (Interaction to Next Paint)<\/td>\n<td>How quickly the page responds to a tap or click.<\/td>\n<td>Under 200 ms<\/td>\n<\/tr>\n<tr>\n<td>CLS (Cumulative Layout Shift)<\/td>\n<td>How much elements move around while loading.<\/td>\n<td>Under 0.1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Always measure the mobile version: it&#8217;s the most demanding and the one your visitors use most.<\/p>\n<h2>2. The most common causes of a slow site<\/h2>\n<ul>\n<li>Very heavy images or outdated formats.<\/li>\n<li>Too many plugins, third-party scripts or fonts loading on every page.<\/li>\n<li>Overloaded shared hosting, or servers far from your visitors.<\/li>\n<li>No page caching and no content delivery network (CDN).<\/li>\n<li>Outdated versions of PHP, WordPress or plugins.<\/li>\n<\/ul>\n<h2>3. What can be optimized<\/h2>\n<ol>\n<li><strong>Images:<\/strong> converting them to modern formats such as AVIF or WebP, at the right size for each screen and with lazy loading.<\/li>\n<li><strong>Code:<\/strong> loading only the CSS and JavaScript each page needs and delaying non-essential scripts.<\/li>\n<li><strong>Caching:<\/strong> storing ready-made versions of each page to deliver them instantly.<\/li>\n<li><strong>CDN:<\/strong> serving files from servers close to each visitor, for example with Cloudflare.<\/li>\n<li><strong>Server:<\/strong> hosting with enough resources and up-to-date versions of PHP and databases.<\/li>\n<\/ol>\n<h2>4. Speed without sacrificing design<\/h2>\n<p>A fast site doesn&#8217;t have to look plain. The key is prioritizing what appears first on screen, loading the rest afterwards and measuring every change. Animations, videos and high-quality images can coexist with good results when they&#8217;re implemented carefully.<\/p>\n<h2>5. It&#8217;s ongoing work<\/h2>\n<p>Every new plugin, added section or update can change performance. That&#8217;s why it&#8217;s worth reviewing as part of maintenance, along with security and backups. We explain it in our guide to <a href=\"https:\/\/royalestudios.com\/en\/blog\/wordpress-maintenance-security-backups\/\">WordPress maintenance<\/a>.<\/p>\n<span class=\"rs-bl-srv-marca\"><\/span>\n<h2>How we do it at Royale Studios<\/h2>\n<p>We optimize the speed of the websites we host and maintain: images in modern formats, caching, CDN, selective loading of resources and server tuning, measuring results before and after with the Core Web Vitals.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Why load speed matters for your sales and for Google, how to measure it with the Core Web Vitals and what can be optimized: images, code, caching, CDN and server.<\/p>\n","protected":false},"author":4,"featured_media":7999,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[745],"tags":[],"class_list":["post-8003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hosting-maintenance"],"acf":[],"_links":{"self":[{"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/posts\/8003","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/comments?post=8003"}],"version-history":[{"count":1,"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/posts\/8003\/revisions"}],"predecessor-version":[{"id":8006,"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/posts\/8003\/revisions\/8006"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/media\/7999"}],"wp:attachment":[{"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/media?parent=8003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/categories?post=8003"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/royalestudios.com\/en\/wp-json\/wp\/v2\/tags?post=8003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}