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Do perfect Lighthouse scores mean the performance of your website is perfect? As it turns out, Lighthouse is influenced by a number of things that can be manipulated and bent to make sites seem more performant than they really are, as Salma Alam-Naylor demonstrates in several experiments.

Learn how to measure and optimize Core Web Vitals on your WordPress website to have a better chance of ranking in search.

Starting in March 2024, Interaction to Next Paint will formally replace First Input Delay as a Core Web Vital metric. Learn how the two metrics differ, why we needed a new way to measure interaction responsiveness, and how you can start optimizing the performance of your site now for a seamless transition to the latest Core Web Vital metric.

Take a closer look at how various performance tools audit and report on performance metrics, such as core web vitals. Geoff Graham answers a set of common questions that pop up during performance audits.

Having access to a free reporting tool like Lighthouse in DevTools is a great start for diagnosing performance issues by identifying bottlenecks on the main thread. Even better are paid tools like [SpeedCurve](https://www.speedcurve.com/?utm_source=smashingmag&utm_medium=magazine&utm_campaign=sm7_2023&utm_id=sm7_2023&utm_term=sm7_2023) to dig deeper into the data for more targeted insights and to produce visual reports to help make a case for performance improvements for your team and other stak...

Learn how Core Web Vitals are changing and what you can do to score well on Interaction to Next Paint, Google’s new page experience metric.

30-second summary:Good page speed and user experience help your site stand out in search resultsThe Interaction to Next Paint metric is replacing First Input De

Discover how to analyze the accessibility of your website's content, audit site speed and performance, and more using Chrome DevTools.

Discover how you can measure your WordPress websites speed and optimize it to perform as smoothly as possible.

How two simple steps improved the responsiveness of Wikipedias mobile site