All about web performance

In this article, we will explain the fundamentals of A/B testing and focus on how to conduct A/B tests with more than two groups.

Web responsiveness is the measure of how quickly a website responds to user interactions, and it is crucial for providing a smooth and efficient user experience to your users. In this blog post about web responsiveness and the metric Interaction to Next Paint ([INP](https://web.dev/inp)), we cover how slow interactions are measured, how to find and debug them, and the common mistakes to avoid in order to keep interactivity great

CSS Containment can help reduce the amount of rendering work the browser does when initially loading a page. But just how much can it improve performance?

This article covers the basics of how to conduct a proper A/B test to examine if a change in the website infrastructure had a positive impact on the web performance.

This article explains the most important page speed KPIs and measurements and discusses different tools and methods to monitor page speed.

This article is about four of the most common causes for layout shifts, how to fix them, and about how to measure and monitor cumulative layout shifts.

Unload beacons are vital for real-user monitoring as they send final data when a user leaves a web page. The most reliable method combines visibilitychange and pagehide events, achieving a reliability rate of 91%. Using unload and beforeunload events is inadvisable as it disables the browser's backward-forward cache and does not improve reliability. The PendingBeacon API offers a promising solution with a 98% success rate in trials and enhances the usability for developers.

What is the TTFB? What Business impact does it have? How can I measure it? And How can I reduce it? Those are the questions answered in this blog.

In this article, we will explore the impact of the Largest Contentful Paint (LCP) on your business and how you can optimize it to enhance user satisfaction and achieve better business outcomes.

In this post, we’ll give a detailed explanation of why CrUX and RUM often report contradicting performance measurements and why you should still keep an eye on both.

In this blog article, we explain how the unique service worker technology of Speed Kit enables dynamic caching and enhances the website speed and Core Web Vitals of our customers.

In today's fast-paced digital world, users have high expectations when it comes to website performance. Slow loading times and unresponsive interfaces can lead to frustration and drive visitors away. One important metric to consider is Interaction to Next Paint (INP), which measures the longest response time to a user interaction on a page. Optimizing INP is crucial to deliver a smooth and engaging user experience.

You go to a website and start reading the text as soon as it appears. But then the web font loads and the rest of the content shifts. How annoying! In this post, we’ll go over how to adjust system fonts to reduce layout shift.