Do not use WP Rocket preconnect feature
This is a heads-up when using latest WP Rocket (13.9) on your WP or WooCommerce site. Preconnecting to third parties now comes out of the box, but comes with a sitespeed trade-off.
Pagespeed findings
Can't get enough? I'm regularly sharing snack bite tips and advice on LinkedIn as well.
Should you preload fonts for performance?
Everyone’s preloading fonts for faster sites. But did you know it can secretly regress your First Contentful Paint instead? Let’s look at when preloading helps, when it hurts, and the simple rules to follow.
I was wrong about Google Lighthouse TTFB
I’ve spent years knee-deep in Lighthouse in my first few pagespeed years. I always assumed that one part was intentional design decision, but after 5 years I learned I was wrong.
Traveling to Google I/O
This year, Google is hosting Google I/O Connect in Berlin. This is the follow-up of the main event in Mountain View USA. Google Experts and Developers from across Europe, Middle East and Africa will be joining to explore Googles latest products and solutions. with live sessions, hands-on activities, and demos. There’ll be plenty of time to network, too.
React Norway conference INP
This blogpost contains links from my last slide and will be updated to also include the PDF.
What is a good TTFB for ecommerce?
Although not part of the set of Core Web Vitals, TTFB is an important page speed metric. However, it poses more challenges for e-commerce sites compared to other types of websites, static sites included. Nevertheless, what is considered a good TTFB for e-commerce?
How to: 5 steps to detect invalid HTML breaking your
This is a follow-up post where I elaborate on how to easily detect a broken to identify invalid HTML.
How invalid HTML elements impact web performance
Watch out for invalid HTML elements in yourHTML head. A div, input or img can result in unexpected browser behaviour, slowing down page performance.
INP demo's and playgrounds
"Does anyone have a good hello world demo for a project with INP issues?"
Text-wrap: balance; a CSS versus JS web performance comparison
Let's support my previous claims by actually researching the performance impact of using a JS and CSS-only solution for headline text balancing
Inviting you to the Meetup Performance NL event
New to INP or caring about web performance, and living in or nearby the south of The Netherlands? You're in luck. There will be an event next Thursday, where I will talk about INP.
It's out; Google reveals INP deadline to become a Core Web Vital
The moment all performance -and maybe SEO- specialists have been waiting for has arrived: Google has announced the INP deadline!
Use text-wrap: balance; to improve design and INP
Evenly and aesthetically distributing your text on available lines? Use `text-wrap: balance` instead of JavaScript and improve web performance & INP of your website.
Performance.now() conference recap
It's a wrap! The organizers of the yearly performance.now() conference managed to raised the bar once again for next year's edition.
Web Vitals summit & performance.now() pre-event
Before the performance.now() conference days started, I visited Google headquarters in Amsterdam and also gave a presentation on INP and the LoAF API during a performance meetup.
Short code snippet to track both redirect time and full TTFB
Here are ways to log the redirect time and TTFB. Just copy & paste it into Chrome's JS Console to see the complete waiting time (including redirect time) when clicking on your own Google + FB Ads, for example.
Easiest way to spot (unnecessary) redirects for SEO or pagespeed
You quickly want to check for unnecessary redirects to prevent them from impacting your SEO and PageSpeed. But you don't want to use other tools? You can easily do it by using DevTools, in 3 simple steps.
Elon Musk's X continues to delay links to websites he dislikes
Yesterday's big news was that X is delaying links to its competitors by up to 5 seconds. It was claimed to be resolved, but I can confirm that not only was it occurring before, but with a delay of 2.6 it is still occurring now. Let's dive in.
Correctly executing a third party on page view, interactive or onload + code
Whatever you do as a third party, there's an interesting nuance that we ran into with a Matomo implementation. The issue: the website was too quick.
Why does Google ignore INP outliers during the lifespan of a page?
INP will observe the latency of all click, tap, and keyboard interactions that occur throughout the lifespan of a user's visit to a page. The final INP value is the longest interaction observed, ignoring outliers. But what does that mean?