9 You’re all set for Core Web Vitals becoming a ranking factor.8 How (and where) to check your site’s Core Web Vitals.4 Why you need to optimize all three Core Web Vitals.3 How does Google measure Core Web Vitals?.2 Why optimizing your website’s Core Web Vitals is essential for SEO.Read our detailed WordPress optimization guide using WP Rocket. WordPress (and other CMS) users can use a caching plugin like WP Rocket to perform some of the optimizations listed above (e.g., preloading requests, deferring scripts, lazy loading below-the-fold images, etc.). Where possible, use the font-display attribute to optimize web font loading and your visitors' page experience.Ĥ) For CMS Users (WordPress and other CMS) To learn more about optimizing critical request chains, read this article. This ensures that the browser spends less time loading resources that aren't initially needed - e.g., below-the-fold images, JavaScript, CSS styling for non-critical content, etc. Reduce the number of critical resources needed (i.e., resources needed to display above-the-fold content) by deferring or asynchronously loading non-critical resources, or where possible, eliminating them altogether. Preload key requests (e.g., scripts, web fonts, stylesheets, etc.) to speed up critical resource execution, saving valuable time during the page loading process.Ģ) Reducing the number of critical resources There are a few strategies you can employ to optimize the critical request chain length, such as: In general, evaluate what resources are loaded on your page and try to minimize the time and effort spent by the browser on loading your page. The maximum critical path latency is also displayed. This audit gets triggered if there is at least one such chain of critical requests.įor triggered audits, GTmetrix displays the longest critical request chain in detail, allowing you to view each request. Declared with a medium, high, or very high priority.Use efficient CSS selectors (deprecated)Īccording to GTmetrix, a critical request is defined as one that is:.Specify a viewport for mobile browsers (deprecated).Specify a Vary: Accept-Encoding header (deprecated).Serve static content from a cookieless domain (deprecated).Remove query strings from static resources (deprecated).Parallelize downloads across hostnames (deprecated).Optimize the order of styles and scripts (deprecated).Make landing page redirects cacheable (deprecated).Improve server response time (deprecated).Defer loading of JavaScript (deprecated).Combine external JavaScript (deprecated).Avoid Flash on mobile webpages (deprecated).Avoid CSS Avoid CSS expressions (deprecated).Use passive listeners to improve scrolling performance.Use explicit width and height on image elements.Serve static assets with an efficient cache policy.Replace large JavaScript libraries with smaller alternatives (deprecated).Remove duplicate modules in JavaScript bundles.Lazy load third-party resources with facades.Keep request counts low and transfer sizes small.Ensure text remains visible during webfont load.Don't lazy load Largest Contentful Paint image.Avoid serving legacy JavaScript to modern browsers.
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