Fundamentals of Page Speed Monitoring
This article explains the most important page speed KPIs and measurements and discusses different tools and methods to monitor page speed....
Sep 8, 2023 • 5 min read
A Page Speed A/B Test: How It’s Done Right!
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....
Sep 8, 2023 • 7 min read
Common Causes of Layout Shifts and How To Fix Them for Better CLS
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...
Aug 24, 2023 • 4 min read
Unload Beacon Reliability: Benchmarking Strategies for Minimal Data Loss
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 i...
Aug 18, 2023 • 4 min read
What is the Time to First Byte and How to Improve It?
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....
Aug 16, 2023 • 5 min read
Why Largest Contentful Paint (LCP) Matters for Your Business
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....
Aug 4, 2023 • 5 min read
Why Google’s CrUX Results Are Not Reproducible With Your Real-User Monitoring
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....
Jul 28, 2023 • 7 min read
Speed Kit: Making Websites Faster With Service Workers and Dynamic Caching
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....
Jul 21, 2023 • 21 min read
Why Interaction to Next Paint (INP) Matters to Your Business
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...
Jul 14, 2023 • 5 min read
Reducing Layout Shift With Custom Fallback Fonts
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....
May 12, 2023 • 4 min read
Building a Shop with Sub-Second Page Loads: Lessons Learned
Here is the story of how we leveraged research on web-caching and NoSQL systems to prepare a webshop for hundreds of thousands of visitors due to TV Show publicity and everything that we learned along the way....
Oct 13, 2016 • 17 min read