Learn how to keep track of your site performance over time and extract more value from GTmetrix. The following guides will guide you on setting up monitoring, configuring Alerts, utilizing History Graphs, and organizing your GTmetrix Reports:
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GTmetrix is a free tool to test and monitor your page's performance. Using Lighthouse, GTmetrix generates scores for your pages and offers actionable recommendations on how to optimize them.
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Monitor Your Performance. Test a page automatically on a Daily, Weekly, or Monthly basis for trend analysis and historical tracking. Get graphs of your performance history on: Web Vitals and other Lighthouse metrics; GTmetrix Grade, Performance / Structure Scores; HTML / Total Page Size, Number of Requests; Why monitor for performance
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Web Vitals are a great way to benchmark your page as they focus on a small set of key metrics that are most impactful to the perception of performance; you’ll find Web Vitals front and center, alongside your GTmetrix Grade and Performance/Structure Scores in the new GTmetrix Report.
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How often GTmetrix tests when monitoring your pages depends on how critical the performance of your website is to you and/or your visitors. Whether performance is mission critical, or if you only need to keep an eye on performance from time to time, there's a frequency that makes sense for you.
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Largest Contentful Paint (LCP) is a performance metric introduced in 2020 by Lighthouse to better measure the perceived loading experience for users. In the simplest terms, LCP measures how long it takes for the largest"content element" (e.g., hero image, heading text, etc.) on your page to become visible within your visitor's viewport. LCP is ...
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Cumulative Layout Shift (CLS) is a performance metric introduced in 2020 by Lighthouse to measure the perceived visual stability of a page load. Simply put, CLS measures the unexpected shifting of web elements while the page is being rendered.
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Time to Interactive (TTI) is a performance metric that measures a page's load responsiveness and helps identify situations where a page looks interactive but actually isn't. TTI measures the earliest time after First Contentful Paint (FCP) when the page is reliably ready for user interactivity.
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Now that you have a grasp of basic analysis with GTmetrix, here are a few more resources that can help you with your page optimization: Everything you need to know about GTmetrix Reports; Why is my GTmetrix Performance Score different from PageSpeed Insights, WebPageTest, and web.dev? Why is my Performance Score always changing? Why is my page ...
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Total Blocking Time (TBT) is a Lighthouse Performance metric introduced in 2020 that quantifies your page's load responsiveness to user input. In the simplest terms, TBT measures the total amount of time your webpage was blocked, preventing the user from interacting with your page.
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