pagespeed

问题 I'm trying to optimalize web for speed and wanna ask about Eliminating render-blocking CSS and JS. by JS 'm only using async attr. - lets say, throwin' it at plugins like flexslider, lightbox.. but should I also use this with the base scripts like ?: <script src="https://cdnjs.cloudflare.com/.../4.5.3/js/bootstrap.min.js" async></script> <script src="js/script.js" async></script> Whenever i add async on some script and test it, that .js script won't just operate - as if not linked. What am I

问题 So on all my web pages i have this code what is used by Yandex metrika for analytics. According to google this script is slowing down my pages and needs something changing in the way it loads to not be render blocking, TTI time to input blocking, FID first input delay blocking, First contentful paint blocking. <script data-cfasync="false" type="text/javascript"> (function(m,e,t,r,i,k,a){m[i]=m[i]||function(){(m[i].a=m[i].a||[]).push(arguments)}; m[i].l=1*new Date();k=e.createElement(t),a=e

问题 So on all my web pages i have this code what is used by Yandex metrika for analytics. According to google this script is slowing down my pages and needs something changing in the way it loads to not be render blocking, TTI time to input blocking, FID first input delay blocking, First contentful paint blocking. <script data-cfasync="false" type="text/javascript"> (function(m,e,t,r,i,k,a){m[i]=m[i]||function(){(m[i].a=m[i].a||[]).push(arguments)}; m[i].l=1*new Date();k=e.createElement(t),a=e

问题 I'm getting the diagnostic on PageSpeed Insights Ensure text remains visible during webfont load Leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading. Learn more. URL Potential Savings …v1/aWB4m0aac….woff2(fonts.gstatic.com) 10 ms …v21/nuFvD-vYS….woff2(fonts.gstatic.com) 10 ms …v13/6xK3dSBYK….woff2(fonts.gstatic.com) 10 ms And I'm trying to correct it by changing <link rel="stylesheet" href="https://fonts.googleapis.com" /> to <link rel="stylesheet"

问题 I'm running PageSpeed Insights on my website and one big error that I get sometimes is Reduce initial server response time Keep the server response time for the main document short because all other requests depend on it. Learn more. React If you are server-side rendering any React components, consider using renderToNodeStream() or renderToStaticNodeStream() to allow the client to receive and hydrate different parts of the markup instead of all at once. Learn more. I looked up

问题 Does the Cumulative Layout Shift metric stop measuring on user-interaction? Google's guidance on Cumulative Layout Shift says: Layout shifts that occur in response to user interactions (clicking a link, pressing a button, typing in a search box and similar) are generally fine, as long as the shift occurs close enough to the interaction that the relationship is clear to the user. 回答1: It's important to remember that Cumulative Layout Shift (CLS) is not just focused on page load. Many of the

问题 Does the Cumulative Layout Shift metric stop measuring on user-interaction? Google's guidance on Cumulative Layout Shift says: Layout shifts that occur in response to user interactions (clicking a link, pressing a button, typing in a search box and similar) are generally fine, as long as the shift occurs close enough to the interaction that the relationship is clear to the user. 回答1: It's important to remember that Cumulative Layout Shift (CLS) is not just focused on page load. Many of the

问题 With google chrome chrome dev, I am running a lighthouse Analysis for mobile. Lighthouse shows a 7.0 seconds delay for Largest Contentful Paint (LCP): I decide to dive into this and click on: "View original trace". It redirects me to the Performance tabs: Here it says that the LCP is 749.7ms (= 0.7497 seconds). Where this discrepancy between LightHouse and Performance tab comes from? 0.7497 seconds for Performance 7.0 seconds for LightHouse 回答1: Why is Lighthouse showing much longer load

问题 With google chrome chrome dev, I am running a lighthouse Analysis for mobile. Lighthouse shows a 7.0 seconds delay for Largest Contentful Paint (LCP): I decide to dive into this and click on: "View original trace". It redirects me to the Performance tabs: Here it says that the LCP is 749.7ms (= 0.7497 seconds). Where this discrepancy between LightHouse and Performance tab comes from? 0.7497 seconds for Performance 7.0 seconds for LightHouse 回答1: Why is Lighthouse showing much longer load

问题 I'm using google's page speed insight tool and on production, it works fine. But is it possible to use it on localhost ? or are there any equivalent tool for testing local pages? I know the lighthouse tab is also an option but the metrics are somehow different! I need the same API used in that service! 回答1: You can use Lighthouse Command Line Interface (CLI) (or run it from NodeJS if you are familiar with that), this is the engine that powers Page Speed Insights. That way you configure CPU