"Trop souvent le temps de chargement est source de discussions et de débats entre clients et prestataires, entre décideurs et équipes techniques.
S’il ne fait aucun doute de la nécessité de faire de la vitesse de chargement un sujet stratégique et d’y impliquer tous les acteurs de la chaîne de valeur d’un projet web, il est absolument nécessaire de choisir des indicateurs pertinents et stables. On ne peut améliorer que ce que l’on mesure, et cette mesure doit être fiable."

To successfully manage your website performance, you first have to adopt a reliable and rigorous measuring tool – as Dareboost of course! Then, identify and use a combination of several performance indicators, meeting your objectives. If you would have to keep a single one, It should be the Speed Index!

"This post demonstrates some of the changes we did to improve our search experience. Combined with a number of optimisations on the back end to improve the performance of trade search, we were able to get the search results to appear below one second, even when searching through nearly half a million vehicles. In a future post, we will look at what changes were needed on the server side to improve search performance."

"Hopefully these ideas will help you reduce your page load times. Your visitors will thank you."

"Nobody likes to wait for web pages to load in the browser. The longer it takes, the more dissatisfied the users become. Slow web pages lead to a higher bounce rate and the loss of customers. To solve this kind of problems can be very hard sometimes. Before you even start to optimise your page, you have to understand the workflows a browser performs in order to display a page on the screen."

"Here are the methods I put in place on all new projects I work on even if accessibility is not in the scope. As you can see, it’s quick to set up and does not ask to dive into repositories or have a big knowledge on the subject."

"Voici les méthodes que je mets en place sur tous les nouveaux projets sur lesquels je travaille même si l’accessibilité n’est pas dans le scope. Comme vous pouvez le constater, c’est rapide à mettre en place et ne demande pas de se plonger dans des référentiels ou d’avoir une connaissance approfondie sur le sujet."

Typography on the web matters because typography matters.

tl;dr: Google wants you to build PWAs, reduce JavaScript file size, use Web Components, and configure autofill. They announced only a handful of features around payments, authentication, Android Trusted Web Activities, Chrome Dev Tools, and the Chrome User Experience Report.

"Google has all the ability in the world to reward and punish sites based on their performance without fracturing the web in the process."

"After creating it I used it to learn some more about Webpack and Web performance in general. In this article I’ll show you everything I did to make the app load from 2690ms down to 170ms."

"Performance matters. Next year, we’re thrilled to venture to London for our brand new conference fully dedicated to everything front-end performance. Dealing with ads, third-party scripts, A/B testing, HTTP/2, debugging, JAM stack, PWA, web fonts loading, memory/CPU perf, service workers. Plus lightning community talks."

"Netflix uses React on the client and server, but they identified that the client-side portion wasn't needed for the first interaction, so they leaned on what the browser can already do, and deferred client-side React. The story isn't that they're abandoning React, it's that they're able to defer it on the client until it's was needed. React folks should be championing this as a feature."

"HTTPS is easier and cheaper than ever before, and it enables both the best performance the web offers and powerful new features that are too sensitive for HTTP. There’s never been a better time to migrate! Developers, check out our set-up guides to get started."

"That’s a particularly low blow, because it’s such a bait’n’switch. One of the reasons why AMP first appeared to be different to Facebook Instant Articles or Apple News was the promise that you could host your AMP pages yourself. That’s the very reason I first got interested in AMP. But if you actually want the benefits of AMP—appearing in the not-search-results carousel, pre-rendered performance, etc.—then your pages must be hosted by Google."