{"id":12091,"date":"2026-07-14T09:59:14","date_gmt":"2026-07-14T07:59:14","guid":{"rendered":"https:\/\/mybox.com\/help\/?post_type=manual_kb&#038;p=12091"},"modified":"2026-07-14T09:59:21","modified_gmt":"2026-07-14T07:59:21","slug":"how-to-use-google-pagespeed-insights-to-check-your-websites-performance","status":"publish","type":"manual_kb","link":"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/","title":{"rendered":"How to use Google PageSpeed Insights to check your website&#8217;s performance"},"content":{"rendered":"\n<div class=\"translation-block translation-block-merged\">\n<p class=\"wp-block-paragraph\">Google PageSpeed Insights is a free tool that measures how quickly a web page loads and how smoothly it behaves for visitors. It can help identify delays caused by hosting response time, images, scripts, fonts, caching, and other website components.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The report may combine real-user data with a controlled Lighthouse test. These sections measure performance under different conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#How_to_test_a_page\" >How to test a page<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Mobile_and_desktop_results\" >Mobile and desktop results<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Real-user_data_and_lab_data\" >Real-user data and lab data<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Real-user_data\" >Real-user data<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Lab_data\" >Lab data<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Understanding_the_performance_score\" >Understanding the performance score<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Important_performance_metrics\" >Important performance metrics<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Largest_Contentful_Paint\" >Largest Contentful Paint<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Interaction_to_Next_Paint\" >Interaction to Next Paint<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Cumulative_Layout_Shift\" >Cumulative Layout Shift<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#First_Contentful_Paint\" >First Contentful Paint<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Total_Blocking_Time\" >Total Blocking Time<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Speed_Index\" >Speed Index<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Checking_server_response_time\" >Checking server response time<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Using_the_findings_and_diagnostics\" >Using the findings and diagnostics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#How_to_compare_results_accurately\" >How to compare results accurately<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#What_PageSpeed_Insights_cannot_identify\" >What PageSpeed Insights cannot identify<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#What_to_expect_after_making_changes\" >What to expect after making changes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#When_to_investigate_further\" >When to investigate further<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/mybox.com\/help\/en\/knowledgebase\/how-to-use-google-pagespeed-insights-to-check-your-websites-performance\/#Summary\" >Summary<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_test_a_page\"><\/span>How to test a page<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open <a href=\"https:\/\/pagespeed.web.dev\/\" target=\"_blank\" rel=\"noopener\">Google PageSpeed Insights<\/a>.<\/li>\n\n\n\n<li>Enter the complete URL you want to test.<\/li>\n\n\n\n<li>Select <strong>Analyze<\/strong>.<\/li>\n\n\n\n<li>Wait for the test to finish.<\/li>\n\n\n\n<li>Review both the <strong>Mobile<\/strong> and <strong>Desktop<\/strong> tabs.<\/li>\n<\/ol>\n\n\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"118\" src=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-6-1024x118.png\" alt=\"\" class=\"wp-image-12093\" srcset=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-6-1024x118.png 1024w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-6-300x35.png 300w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-6-768x89.png 768w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-6-18x2.png 18w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-6.png 1058w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n\n<div id=\"mybox-2167156370\" class=\"mybox-content mybox-entity-placement\"><div class=\"early-access-banner-inpost\">\r\n  <div class=\"banner-left-inpost\">\r\n    <div class=\"icon-box-inpost\">\r\n      <img decoding=\"async\" src=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/02\/square-info-icon.svg\" alt=\"Info\">\r\n    <\/div>\r\n    <div class=\"text-box-inpost\">\r\n      <span class=\"label-inpost\"><span class=\"translation-block translation-block-banner-text\">Early access<\/span><\/span>\r\n      <h4><span class=\"translation-block translation-block-banner-text\">Still need help?<\/span><\/h4>\r\n      <p><span class=\"translation-block translation-block-banner-text\">Contact our customer service team.<\/span><\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"banner-right-inpost\">\r\n    <a href=\"https:\/\/panel.mybox.com\/helpdesk2\/v\/list\/\" class=\"banner-button-inpost\"><span class=\"translation-block translation-block-banner-text\">Message us<\/span><\/a>\r\n  <\/div>\r\n<\/div><\/div>\n\n<div class=\"translation-block translation-block-merged\"><p class=\"wp-block-paragraph\">PageSpeed Insights tests one URL at a time. Testing the homepage does not automatically test product pages, blog posts, forms, or other sections.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a representative overview, test several important pages, such as the homepage, a landing page, a product or service page, and a page containing forms or large images.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mobile_and_desktop_results\"><\/span>Mobile and desktop results<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"174\" src=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-8-1024x174.png\" alt=\"\" class=\"wp-image-12095\" srcset=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-8-1024x174.png 1024w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-8-300x51.png 300w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-8-768x131.png 768w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-8-18x3.png 18w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-8.png 1027w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n<div class=\"translation-block translation-block-merged\">\n\n\n<p class=\"wp-block-paragraph\">PageSpeed Insights creates separate reports for mobile and desktop devices.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The mobile test uses more restrictive device and network conditions, so its score is often lower. This does not automatically indicate a hosting problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mobile performance can also be affected by large images, JavaScript, page builders, fonts, advertisements, and third-party services.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Real-user_data_and_lab_data\"><\/span>Real-user data and lab data<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Real-user_data\"><\/span>Real-user data<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Discover what your real users are experiencing<\/strong> section uses anonymised data from eligible Chrome visits.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It reflects performance across different devices, locations, networks, and browser conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This section may not appear when the page does not have enough eligible traffic. Its absence does not indicate a website problem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lab_data\"><\/span>Lab data<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Diagnose performance issues<\/strong> section is generated by Lighthouse during the current test.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It provides a controlled snapshot and helps identify technical causes of slow loading or unstable behaviour.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lab results can vary because of network conditions, cache state, server load, and third-party services.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Understanding_the_performance_score\"><\/span>Understanding the performance score<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The performance score ranges from 0 to 100:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>90\u2013100:<\/strong> Good<\/li>\n\n\n\n<li><strong>50\u201389:<\/strong> Needs improvement<\/li>\n\n\n\n<li><strong>0\u201349:<\/strong> Poor<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The score combines several Lighthouse metrics. A score of 100 is not required for a website to perform well.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The individual metrics and recommendations usually provide more useful information than the overall score alone.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Important_performance_metrics\"><\/span>Important performance metrics<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"472\" src=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-9.png\" alt=\"\" class=\"wp-image-12096\" srcset=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-9.png 964w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-9-300x147.png 300w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-9-768x376.png 768w, https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/07\/image-9-18x9.png 18w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/figure>\n<\/div>\n\n<div class=\"translation-block translation-block-merged\">\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Largest_Contentful_Paint\"><\/span>Largest Contentful Paint<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Largest Contentful Paint (LCP)<\/strong> measures how long it takes for the largest visible element to appear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A high LCP can be caused by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Slow server response<\/li>\n\n\n\n<li>Large images<\/li>\n\n\n\n<li>Render-blocking CSS or JavaScript<\/li>\n\n\n\n<li>Delayed font loading<\/li>\n\n\n\n<li>Third-party content<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Interaction_to_Next_Paint\"><\/span>Interaction to Next Paint<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Interaction to Next Paint (INP)<\/strong> measures how quickly the page responds visually after a visitor interacts with it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A high INP is commonly linked to JavaScript tasks that keep the browser busy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">INP is mainly based on real-user interactions, so it may be unavailable when there is not enough field data.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cumulative_Layout_Shift\"><\/span>Cumulative Layout Shift<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cumulative Layout Shift (CLS)<\/strong> measures unexpected movement of visible elements while the page loads.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Layout shifts can happen when images have no defined dimensions, fonts change after loading, or banners and embedded content resize their containers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"First_Contentful_Paint\"><\/span>First Contentful Paint<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>First Contentful Paint (FCP)<\/strong> measures when the browser first displays visible page content.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It can be affected by server response time, stylesheets, fonts, and JavaScript.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Total_Blocking_Time\"><\/span>Total Blocking Time<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Total Blocking Time (TBT)<\/strong> measures how long the browser is prevented from responding during the Lighthouse test.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Long JavaScript tasks are a common cause of high TBT.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Speed_Index\"><\/span>Speed Index<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Speed Index<\/strong> measures how quickly the visible parts of the page appear during loading.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It should be reviewed together with the other metrics.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Checking_server_response_time\"><\/span>Checking server response time<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PageSpeed Insights may show a finding related to the initial document request, server response time, or Time to First Byte.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Time to First Byte (TTFB)<\/strong> measures how long it takes for the browser to receive the first byte of the page response.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TTFB can be affected by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hosting resources<\/li>\n\n\n\n<li>Application processing<\/li>\n\n\n\n<li>Database queries<\/li>\n\n\n\n<li>WordPress plugins or themes<\/li>\n\n\n\n<li>Page caching<\/li>\n\n\n\n<li>External API requests<\/li>\n\n\n\n<li>Network distance<\/li>\n\n\n\n<li>Redirects<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">TTFB is useful when evaluating hosting performance, but it does not measure the complete page-loading process.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A server can respond quickly while images or scripts make the page slow. A delayed initial response can also occur even when the rest of the page is well optimised.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Using_the_findings_and_diagnostics\"><\/span>Using the findings and diagnostics<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Below the metrics, PageSpeed Insights lists findings that may explain the result.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common findings include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Large or poorly optimised images<\/li>\n\n\n\n<li>Unused JavaScript or CSS<\/li>\n\n\n\n<li>Render-blocking resources<\/li>\n\n\n\n<li>Large network payloads<\/li>\n\n\n\n<li>Long JavaScript tasks<\/li>\n\n\n\n<li>Third-party scripts<\/li>\n\n\n\n<li>Inefficient browser caching<\/li>\n\n\n\n<li>Layout shifts<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These are diagnostic suggestions. Resolving every item may not be necessary.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Start with findings that show the largest estimated delay or affect a failing Core Web Vital.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_compare_results_accurately\"><\/span>How to compare results accurately<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Performance tests are more useful when they are performed consistently.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Test the same page URL.<\/li>\n\n\n\n<li>Use the same device tab.<\/li>\n\n\n\n<li>Run the test several times.<\/li>\n\n\n\n<li>Compare the median result rather than the fastest test.<\/li>\n\n\n\n<li>Avoid changing several settings at once.<\/li>\n\n\n\n<li>Record the active cache configuration, Add-ons, Boost Packs, CPU, and RAM.<\/li>\n\n\n\n<li>Use the same cache conditions for each comparison.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">When testing a resource or caching change, measure the page before and after the change under similar conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A single result may be affected by temporary conditions, so repeated tests provide a more reliable comparison.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_PageSpeed_Insights_cannot_identify\"><\/span>What PageSpeed Insights cannot identify<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PageSpeed Insights can show performance symptoms and the resources contributing to them. It cannot always identify the exact hosting setting, WordPress plugin, theme function, or external service responsible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, a slow initial server response may be caused by limited resources, an uncached page, a slow database query, or an external API request.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For WordPress websites, PageSpeed Insights can be used together with Query Monitor. PageSpeed Insights tests the visitor experience, while Query Monitor shows what WordPress processes internally.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_to_expect_after_making_changes\"><\/span>What to expect after making changes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lab data can change as soon as the page is tested again.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Real-user data is based on historical visits, so improvements may take time to appear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Caching can also affect results. The first request after clearing the cache may be slower because the page must be generated again.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Compare repeated results over time rather than treating one score as a permanent measurement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_to_investigate_further\"><\/span>When to investigate further<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Further investigation may be useful when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>TTFB remains high across repeated tests<\/li>\n\n\n\n<li>Several pages show a slow server response<\/li>\n\n\n\n<li>Performance becomes worse during traffic spikes<\/li>\n\n\n\n<li>Cached pages remain slow<\/li>\n\n\n\n<li>Results change significantly without a known update<\/li>\n\n\n\n<li>PageSpeed Insights cannot complete the test<\/li>\n\n\n\n<li>The website returns an HTTP error<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Before contacting support, record the tested URL, date, approximate time, device mode, relevant metrics, and recent website or hosting changes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Summary\"><\/span>Summary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Google PageSpeed Insights combines real-user information with a controlled Lighthouse test. Use the individual metrics, TTFB, and diagnostic findings to understand page performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Repeat tests under consistent conditions before comparing website or hosting changes.<\/p>\n<\/div>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","format":"standard","manualknowledgebasecat":[28],"manual_kb_tag":[],"class_list":["post-12091","manual_kb","type-manual_kb","status-publish","format-standard","hentry","manualknowledgebasecat-others"],"_links":{"self":[{"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/manual_kb\/12091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/manual_kb"}],"about":[{"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/types\/manual_kb"}],"author":[{"embeddable":true,"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/manual_kb\/12091\/revisions"}],"predecessor-version":[{"id":12097,"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/manual_kb\/12091\/revisions\/12097"}],"wp:attachment":[{"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/media?parent=12091"}],"wp:term":[{"taxonomy":"manualknowledgebasecat","embeddable":true,"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/manualknowledgebasecat?post=12091"},{"taxonomy":"manual_kb_tag","embeddable":true,"href":"https:\/\/mybox.com\/help\/en\/wp-json\/wp\/v2\/manual_kb_tag?post=12091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}