Pour une vraie sobriété, encadrons les data centers
Énergivores et imposants, les data centers sont pourtant libres de s’installer où ils veulent. Lier planification énergétique et urbaine devient urgent pour freiner leur essor, soutient l’auteur de cette tribune.
Daniel Rousseaux est urbaniste, spécialiste en participation citoyenne et intéressé par les questions d’environnement. Derrière l’image sobre et bleutée des serveurs ronronnant dans les centres de données (« data centers ») se cachent de véritables usines électriques. Chaque fois que vous (...)
Typographie et accessibilité - Le wiki de la Lutine du Web
On entend beaucoup de choses sur la typographie et l’accessibilité. Idées reçues ou réalité ? Ou n’est-ce pas plus complexe que ça ? Quelques liens pour
Improving the accuracy of website carbon emissions estimates
Existing models for website carbon emissions are good for reaching a ballpark figure of website CO2 emissions. This post goes into some ways to generate more specific, accurate emissions estimates.
How Sunday Citizen improved conversions by focusing on performance
We worked with Sunday Citizen to improve their key performance metrics and were able to achieve 25% improvement in Largest Contentful Paint and 61% in Cumulative Layout Shift at the 75th percentile. This resulted in 4% decrease in bounce rate and over 6% increase in conversion. Web performance is often overlooked as a
Rapport de la France à la Commission européenne sur la Directive Accessibilité Web : règles du jeu modifiées ? - Koena
La loi française sur l’accessibilité du Web est une transposition de la Directive européenne Accessibilité Web. Or, parmi les obligations issues de cette Directive, un rapport devait être publié avant le 23 décembre 2021. 25 des 27 États concernés avaient fait leur rapport, à l’exception de la France et Chypre. Avec 1 an de retard, […]
Carbon-Aware Computing Whitepaper - How UBS succeeded in measuring and reducing carbon emissions of their core risk platform
The first enterprise-scale implementation of carbon-aware computing using the software carbon intensity (SCI) specification and carbon-aware-sdk is capable of avoiding multiple metric tons of CO2eq from entering the atmosphere -- every year.
An In-depth Performance Comparison Of 5 Popular WordPress Page Builders
If you feel somewhat restricted by the flexibility of layouts provided by WordPress themes, you might be interested in building your WordPress webpages with a page builder plugin. WordPress page builders have become wildly popular because they let anyone, even those without the gift of code, build a beautiful website or landing page using a […]
With a digital sustainability approach, businesses can not only reduce emissions but also improve the performance of digital channels with relative ease.
The subject of Web resource caching is as old as the World Wide Web itself. However, I’d like to offer an as-exhaustive-as-possible catalog of how one can improve performance by caching. Web resource caching can happen in two different places: client-side - on the browser and server-side. This post is dedicated to the former; the next post will focus on the latter. Caching 101 The idea behind caching is simple: if a resource is a time- or resource-consuming to compute, do it once and st
So you heard of Client-Hints and you think you got time, right? Wrong.
If your "quest for fast" goes through device detection, you'll want to pay attention to this.
Introduction
I'll go out on a limb and make a wild guess: if you care about web performance, that's because you want to deliver great UX to users. Assuming my guess is right, in the last two decades the per
A few weeks ago at performance.now(), we were able to announce the initial availability of a new public dataset of RUM data - the RUM Archive.
I'd like to take a few minutes to discuss our motivation for the project, what kind of data the RUM Archive contains, how you can access it, its limitations
Introduction
A Swiss Army knife is not merely a knife but rather an entire toolbox packaged in a light and compact container. Each tool is carefully selected to maximize utility while simultaneously minimizing size and redundancy. Mastery of the toolbox means knowing when and how to use each availab
Prologue
In 1949, Claude Shannon married a computer.
Her name was Betty.1
Mary Elizabeth “Betty” Moore graduated from the New Jersey College for Women in 1948 and began work the next day as a computer at Bell Laboratories.2
Her job was to perform mathematical calculations for Bell Labs engineerin
Lazy-loading LCP images: Why does this anti-pattern happen?
Largest Contentful Paint (LCP) is a performance metric representing the user experience's loading facet. It's part of the Core Web Vitals program and measures the render time of the largest image or text block visible within the viewport. When the LCP element is an image, which happens 72% of the ti
Youtube.com : un modèle de performance web environnementale ? - Temesis
Vous l’attendiez ? Voici le dernier volet de notre étude de la performance web environnementale consacrée à YouTube, le géant de la vidéo en ligne. Cet article traite de l’écoconception du …