Contents tagged “WebPerf”
There are 59 contents with this tag:
Henry Desroches wrote
In previous experience, converting variable TTF to WOFF via online tools like convert.io or FontSquirrel would often break the axes needed to interpolate between font variation settings.
Tim Kadlec wrote
So we get reduced data cost, with no extra connection from the browser, and what appears to be pretty negligible cost at the CDN (the difference in response time for the final proxied images versus loading them without Cloudinary in place is barely noticeable in my tests)—and it all took just a few minutes to put into place.
Nicolas Goutay wrote
Tim Kadlec wrote
When the skeleton screen doesn’t match the outcome, we’ve created confusion and frustration that will overcome any benefit you might have gotten from trying to handle that delay in a better way.
Simon Hearne wrote
Here's a great overview of both what will come soon in Google ranking algorithm, and how to detect and fix issues with these Core Web Vitals.
I'm using an SVG sprite on this site to make sure I don't repeat SVG code for icons that are used multiple times, and I inline it so the rendering doesn't depend on another resource loading. Here's how I build this sprite from individual SVG icons.
Looks like #Lighthouse now suggests me to preconnect to the Google Analytics domain…
…which I already do! 🤔
Anything wrong with my HTTP header?
Matt Hobbs wrote
Nice overview of the issue encountered by users if your 404 error page weights too much, with actual data from HTTP Archive.
Nick Winkler wrote
Fortunes are made and lost based on how brands thread the needle between site speed and functionality. Despite this, the Retail Systems Research (RSR)’s survey reveals the average retailer’s website is still too slow, and their mobile sites are even slower.
@bagder hi Daniel, reading https://daniel.haxx.se/blog/2016/08/18/http2-connection-coalescing/ (yes, I'm late 😅)
If DNS B.example.com returns
192.168.0.3, is TLS really enough to be sure it also works on
BTW, there's a typo near the end: "both IPv4 and IPv4 addresses".
I guess we'll (unfortunately) see a lot of turtles in Firefox soon, while browsing the Web with devtools open… 🐢
JUST LANDED in Firefox Nightly:
Appears when the server response time for a request exceeds the recommended limit of 500 ms (adjustable in about:config).
Awesome dev work by @b4bomsy and planning by @digitarald & @janodvarko!
If you spot it and it helps, let us know!H
Zach Leatherman wrote
If you don't have any budget for Dareboost (or competitors) yet, Speedlify can help you monitor your site's performance for free, and build your performance strategy to justify using even better tools:
New project: Speedlify 🐇
A self-hosted dashboard to continuously measure and publish web site performance statistics using Lighthouse and Axe.
It took me just a few minutes to built my dashboard for multiple sites:
Looks like #Dareboost liked improvements made yesterday evening! 💪
Speed Index at 800 on 3G, despite a laaate 530 ms TTFB, not bad! 🤔
Paint timing metrics are too optimistic. In 85-95% of cases, they are recorded before any pixels are actually rendered to the screen.
For example, even on the same Windows 10, Edge 80 is 3 times faster than Edge 18:
Tim Kadlec wrote
In an ideal world, I believe a framework should go beyond developer experience value and provide concrete value for the people using our sites. Performance is just one part of that—accessibility and security both come to mind as well—but it’s an essential part.
Harry Roberts wrote
If you're using Google Fonts service instead of self-hosting the fonts (even if they come from Google Fonts), Harry shows here the optimal performance and UX you can get with it, with lot of details, but a really simple solution.
I think that's the first time someone shares one of my articles on Hacker News:
Do I have to celebrate? Is it a rite of passage? 😅
JAMstack often promotes itself as an excellent way to provide performant sites. It's even the first listed benefit on jamstack.wtf, a "guide [which] gathers the concept of JAMstack in a straight-forward guide to encourage other developers to adopt the workflow". But too many JAMstack sites are very slow.
Karolina Szczur wrote
Lighthouse 6 is the first major release of the popular auditing tool since May 2019, introducing critical changes that will impact everyone relying on the scoring. Remember, the PageSpeed Score (which contributes to your SEO ranking) is the same as the Lighthouse Performance Score.
Bryan L. Robinson wrote
This is an excellent writeup of the different paths Bryan went to optimize the performance of his site built with Eleventy. I will definitely look for inspiration in this code.
Zach Leatherman wrote
Eleventy doesn’t do any special optimizations out of the box to make your sites fast. It doesn’t protect you from making a slow site. But importantly it also doesn’t add anything extra either. This sort of developer empowerment over the final product has seemed to attract an amazing group of performance oriented developers using the project and I am so grateful to every one of you.
Michelle Barker wrote
Optimising SVGs (scalable vector graphics) for web projects has the dual benefits of reducing the file size and making them easier to work with. […] In this article I’ll share my process for optimising SVG assets, which may help you if you’re a designer or developer unfamiliar with working with SVG on the web.
I really like that SpeedCurve tried to innovate with this recent "User Happiness" metric. It aggregates multiple technical metrics to decide if users visiting the page are happy or not with it. But I see several issues in this metric.
Boris Schapira wrote
In this article, Boris shows how new practices around third party trackers hidden as first party assets, to "escape" GDPR and trackers blockers, can lead to security and performance issues, leading to potential business loss.
Jake Archibald wrote
Used correctly, caching is a massive performance enhancement and bandwidth saver. Favour immutable content for any URL that can easily change, otherwise play it safe with server revalidation. Only mix max-age and mutable content if you're feeling brave, and you're sure your content has no dependancies or dependents that could get out of sync.
Tim Kadlec wrote
Because while the web keeps getting heavier and we keep moving further away from page weight as a primary performance metric, the data I’ve seen so far indicates folks who want low-data experiences are far more common than we may think.
Ramesh Periyathambi wrote
Ramesh Periyathambi explains why eBay developed a dedicated "light" service to get critical informations about products, to speed up presentation of accurate content to buyers, and why it was worth the additional effort.
The Web Quality Checklist is intended for all professionals who create websites. It is designed in a collaborative way by a community of Web professionals, led by the French company Opquast (Open Quality Standards).
Surma explains very well how “low-end phones will mostly likely be used by the massive number of people coming online in the next couple of years“, and why we need to take that into account when we design our frontend Web architectures.
Jason Pamental wrote
In issue #11 of his great Web Fonts & Typography News newsletter, Jason Pamental shares the progress made by the W3C Web Fonts Working Group towards a new way to progressively serve fonts so that only the required new glyphs are downloaded every time new characters have to be rendered.
Tali Garsiel wrote
As a web developer, learning the internals of browser operations helps you make better decisions and know the justifications behind development best practices. While this is a rather lengthy document, we recommend you spend some time digging in; we guarantee you’ll be glad you did.
Eric Portis wrote
great news: there are two on-the-horizion web platform features that are trying to make no-jank, fixed-aspect-ratio, fluid-width images a natural part of the web platform.
Monica Dinculescu wrote
If you're using a web font, you're bound to see a flash of unstyled text (or FOUC), between the initial render of your websafe font and the webfont that you've chosen. This usually results in a jarring shift in layout, due to sizing discrepancies between the two fonts. To minimize this discrepancy, you can try to match the fallback font and the intended webfont’s x-heights and widths. This tool helps you do exactly that.
Tammy Everts wrote
You can have large, robust pages that still feel fast. But you should care about page bloat in terms of how it affects mobile users, especially mobile-only users who are dealing with bandwidth constraints or data limits.
Steve Souders wrote
Zach Leatherman wrote
Nikita Prokopov wrote
As a general trend, we’re not getting faster software with more features. We’re getting faster hardware that runs slower software with the same features.
I like animated GIFs, like most people these days I think, but they are really heavy, hurting the performance of web pages, and consuming data plans faster than should be needed. So we need to convert them to videos, which are much lighter, for the same visual result. Let's use Cloudinary.
J'ai eu l'honneur de présenter une petite conférence lors du meetup WebPerf de mars 2018, sur un sujet qui me passionne, puisqu'il combine deux de mes marottes en Web front : la performance et les images en Responsive Web Design. Je vous invite à découvrir mes slides et la vidéo.
Enough. I'm fed up with Disqus. It's been useful, easy to plug on this blog, but it's a mess for web performance, and I don't own my data, so… bye bye. Webmention is now a great alternative, with more people implementing it, so let's try to keep only that.
I love when Web site/apps work even when I'm offline. I've made my SVG game esviji work offline thanks to appcache just after attending Jake Archibald conference about why Application Cache is a Douchebag during the 2012 edition of the Paris Web conference. Fortunately, we have now Service Workers (in some browsers), which gives us more control over this kind of cache for offline browsing. But as Uncle Ben says, “With Great Power Comes Great Responsibility”.
Les raccourcisseurs d'URL sont devenus incontournables sur le Web depuis quelques années, mais initialement pensés comme outils de facilitation de partage, ils ont beaucoup évolué et sont surtout devenus des outils de tracking. Du coup, les sites en abusent de plus en plus, alors que les plateformes où ces liens sont publiés, Twitter par exemple, rajoutent leur propre couche. L'impact sur la performance pour l'utilisateur final est désastreux.
La collection «mémento» de chez Eyrolles vient de s'agrandir, avec l'ajout d'un petit nouveau dédié aux performances web, en termes de vitesse. Incontournable !
Le SEO et la performance Web sont deux disciplines très différentes liées à la mise en ligne de sites Web, avec des objectifs qui parfois peuvent être contradictoires. Mais des fois, ce qui paraît contradictoire ne l'est en fait pas si on y regarde de plus près, avec un peu de pragmatisme.
Pour ceux qui n'étaient pas présents à Web UX en mai 2011, et avec pas mal de retard, voici mes slides, ainsi que la vidéo captée par l'équipe organisatrice.
Vous le savez sans doute si vous me lisez régulièrement, sur ce blog ou via mes tweets, je suis dingue de Web, et toujours intéressé par ses moyens de mise en œuvre, usages et acteurs, et donc très intéressé par tout événement permettant de mixer tout cela. Cette année, en plus de l'incontournable rendez-vous annuel Paris Web en octobre, vous pourrez me croiser fin mai à Nîmes pour Web UX et Sud Web.
Vous l'avez peut-être constaté par vous-même, le menu de navigation de ce site ne se fige plus en haut de l'écran quand vous descendez dans la page. Ce fonctionnement que j'avais trouvé très sexy s'avère poser plusieurs problèmes, donc j'ai préféré le supprimer.
A l’heure où tout le monde ne jure que par l’optimisation du référencement — on dit Search Engine Optimization, ou SEO, pour faire branché — afin d’augmenter son trafic, et ainsi ses clients potentiels et/ou son revenu publicitaire, qui se soucie de vérifier ce qui se passe pour les internautes qui arrivent bien sur le site, mais sur une page qui n’existe pas, indiquée comme il se doit par une erreur HTTP 404 ?
La technologie INA (Intelligent Network Acceleration) de BoostWorks utilisé dans le produit BoostWeb Optimizer « est une procédure sophistiquée de mémorisation et de compression qui optimise les performances du réseau tout en préservant l'intégrité et la qualité des données ».
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