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Trying to measure and analyse your site's mobile performance is like taking aim at a constantly moving target. As soon as you think you have some idea of what exactly it is you're trying to measure, it changes.

A SVG-based HAR Waterfall Viewer

Chrome peut, dans certains cas, bloquer l'exécution de scripts qui utilisent document.write(), une très mauvaise pratique pour la performance Web.

Retrouvez une sélection de liens sur le thème des performances Web de la semaine passée. Au sommaire, 11 liens sur : CSSitis, brotli, Services Workers, Chrome reloads, AMP et votre site au régime.

Retrouvez une sélection de liens sur le thème des performances Web de la semaine passée. Au sommaire, 11 liens sur : JSON à 90°, SPOF, Chrome headless, jQuery Slim, Service Worker, classement e-commerce

Au sommaire, 23 liens sur : Arcep, Awwwards, scripts JS, DDoS et émotions, WebPageTest, FB Live, brotli et Varnish, métadonnées XML et images, 3rd party scripts, Offline First, WordPress to Hugo, Canonical AMP, démarrer en webperf, perf-tool

Une présentation des fonctionnalités avancées de WebPageTest (scripts, API, etc.)

Retrouvez une sélection de liens sur le thème des performances Web de la semaine passée. Au sommaire, 16 liens sur : WordPress, monitoring, obésité du web et régimes, scroll passif, animations Web, SVG, brotli, livre blanc Fasterize et preload cheat-sheet.

Découvrez quel est le meilleur CDN ou Cloud depuis votre localisation.

The 7 Deadly Mistakes That Make Websites Slow [Infographic] There are several common mistakes people make that slow down their website. Are you making any of them? See the mistakes below (and how you can fix them if you are making them!)

"I did some research about how images are downloaded when media queries are involved. I wrote up some automated tests where Javascript could determine whether or not the image was requested. I've got enough data now to be able to go into detailed findings."

Speedlimit is a Leopard preference pane for limiting your network bandwidth to one of a couple different speeds.

A month ago, we wrote about how the Home Depot improved their web performance through a major "Perflift". Today, we want to congratulate "l'equipe" at Le Monde for improving their website. While The New York Times is the number one newspaper in US, Le Monde is the number one news source in France and for French speakers around the world.

PunyPNG first analyzes the content of your image and figures out the best image format to use.

Itw by M. Hendrickson Current state of the Performance and Operations market. Terms, semantics and DevOps, are we splitting hairs? What do performance people do on a daily basis? Do you need to tradeoff anything to get better performance? Are most websites acceptable when it comes to speed? Measuring slowness -- clarified and demystified Where do you find performance monitoring tools? How do you know if you have a fast enough web site? Does Mobile disrupt your quest for high performance? Does HTML5 add any more complexity challenges to high performance web sites? Wrap up and discussion of Velocity Conference