WebWait - Benchmark Your Website. Mesurer le temps de chargement d'une page. Le temps de chargement a un impact direct sur l'expérience utilisateur, et dans une moindre mesure sur le référencement naturel. Un développeur ou un référenceur doit dont chercher à diminuer au maximum ce temps de chargement. Et pour cela, il est toujours intéressant réaliser des tests avant et après vos modifications. Voici donc 5 outils pour réaliser un benchmark complet des performances de votre site.
GTMetrix C'est de loin mon outil préféré. Si vous ne deviez en choisir qu'un, c'est celui-ci.Il vous permet de mesurer le temps de chargement d'un site de manière automatisée, et en intégrant deux outils complets Yslow et PageSpeed pour savoir quoi et comment optimiser vos pages. GtMetrix intègre parfaitement PageSpeed et Yslow Cerise sur le gâteau, vous avez accès à un historique plutôt bien fait sur l'évolution jour par jour du temps de chargement de votre site. L'historique de GTMetrix Les points forts : Les points faibles : L'outil est disponible ici : GTMetrix Yottaa WebSiteOptimization.
CSS Stress Testing and Performance Profiling | Andy Edinborough. Now let me explain: I have been losing my sanity over the oddest issue. The project I’m working on right now has a fairly complex stylesheet. Performance for the site is absolutely critical. I’ve done my best to squeeze and optimize every line I can. In all browsers, it runs like a champion. Except IE9. It runs terribly in IE9. To make matters worse, it runs fine in IE8, IE7, and though it’s mangled, it even runs in IE6! Something specific to IE9 was causing a serious performance glitch. Sadly, no one had an answer So, as I lay there in the corner of the closet, weeping bitterly, I realized that writing my own CSS stress tester wouldn’t be that difficult. Of course it took a while to work out the exact implementation.
My first implementation was written synchronously. Instead of: var time0 = new Date().getTime(); window.scrollBy(0,100);var delta = (new Date().getTime()) - time0; I needed to add an event handler to window.scroll, scroll the page, then capture time in the event. Holmes.css - CSS Markup Detective. What does it do? The holmes.css file will display either an error (red outline), a warning (yellow outline), or a deprecated style (dark grey outline) for flags such as: Missing required attributes on tags, such as name attributes on inputs (lots of these) Potentially improvable markup, such as links with href="#" Deprecated and Non-W3C Elements - see W3C.org's article on obselete tags Non-W3C Attributes - as above, just the most important ones since there are MANY Thanks to Anthony Mann, holmes now displays an informative error message when you hover over the element.
Support for :after/::after on images is non-existent however in most browsers. How do I use it? Simply download a version of the CSS, minified or normal (with docs), and include a stylesheet link to it on your page. In terms of configuration, such as changing the flag colours: go nuts! Why should I use it? Browser Support Works 100% in Google Chrome 10+ Safari 5+ Opera 10+ Firefox 3.5+ How to Improve Website Load Times. I’ll admit it: I’m addicted to speed. No, not the psychostimulant; I’m talking about website speed. I’m not alone, either. Google recently announced that they consider website speed when determining search engine rankings. Oh, did I mention that a slow website can literally kill your revenue stream? Google found that moving from a 10-result page loading in 0.4 seconds to a 30-result page loading in 0.9 seconds decreased traffic and ad revenues by 20% (Linden 2006).
It’s quite clear. What Determines Website Page Speed? The Yahoo! So, I’ll break down the top performance recommendations and show you you can apply them to your website. Let’s do it. 1. Translation: Limit the number of files required to display your website When someone visits your website, the corresponding files must be sent to that person’s browser. As expected, every file you use to enhance your design detracts from its performance. The key takeaway is this: eliminate everything that’s unnecessary. 2. 3. 4. What? 5. Easy! 6. 7. W3 Total Cache. The only WordPress Performance Optimization (WPO) framework; designed to improve user experience and page speed. Recommended by web hosts like: Page.ly, Synthesis, DreamHost, MediaTemple, Go Daddy, Host Gator and countless more.
Trusted by countless companies like: AT&T, stevesouders.com, mattcutts.com, mashable.com, smashingmagazine.com, makeuseof.com, yoast.com, kiss925.com, pearsonified.com, lockergnome.com, johnchow.com, ilovetypography.com, webdesignerdepot.com, css-tricks.com and tens of thousands of others. W3 Total Cache improves the user experience of your site by increasing server performance, reducing the download times and providing transparent content delivery network (CDN) integration. An inside look: Benefits: Features: Improve the user experience for your readers without having to change WordPress, your theme, your plugins or how you produce your content.
How to Improve Website Load Times. Meta Tag Analyzer. Calcul de densité de mots clés. GTmetrix | Website Speed and Performance Optimization. Keyword density analyzer, and keyword placement & prominence analysis.