Tags: performance



kdzwinel/progress-bar-animation: Making a Doughnut Progress Bar - research notes

This is a thorough write-up of an interesting case where SVG looks like the right tool for the job, but further research leads to some sad-making conclusions.

I love SVG. It’s elegant, scalable and works everywhere. It’s perfect for mobile… as long as it doesn’t move. There is no way to animate it smoothly on Android.

Performance and assumptions | susan jean robertson

We all make assumptions, it’s natural and normal. But we also need to be jolted out of those assumptions on a regular basis to help us see that not everyone uses the web the way we do. I’ve talked about loving doing support for that reason, but I also love it when I’m on a slow network, it shows me how some people experience the web all the time; that’s good for me.

I’m privileged to have fast devices and fast, broadband internet, along with a lot of other privileges. Not remembering that privilege while I work and assuming that everyone is like me is, quite possibly, one of the biggest mistakes I can make.

Web fonts, boy, I don’t know – Monica Dinculescu

Monica takes a look at the options out there for loading web fonts and settles on a smart asynchronous lazy-loading approach.

Web Bloat Score Calculator

Here’s an interesting metric for measuring performance: take the overall page weight of a URL and divide it by the file size of the screenshot of that URL.

Refreshing The Verge: Facebook video, Google AMP, and the (non)future of the web - The Verge

AMP loads super, super quickly and is simply a better experience right now. So can we add enough design to make an AMP page feel like The Verge?

What a depressing conclusion! But I guess it’s easier than, y’know, actually fixing the bloated Verge website, packed with megabytes and megabytes of invasive trackers. It’s no wonder people prefer the AMP experience. Yet the idea of improving the website isn’t even raised in this whole article.

Then again, this is the same guy who tried to lay the blame for The Verge’s abysmal performance at the feet of web browsers.

GreenSock | “will-change” must change? Animators beware.

This will-change property that was intended to SOLVE problems for animators may end up doing the opposite.

It seems wise for the browsers to step back and let the spec authors fill in the implementation details and gain consensus before moving forward.

Intervening against document.write() | Web Updates - Google Developers

Chrome is going to refuse to parse document.write for users on a slow connection. On the one hand, I feel that Google intervening in this way is a bit icky, but I on the other hand, I totally support this move.

This keeps happening. Google announce a change (usually related to search) where I think “Ooh, that could be interpreted as an abuse of a monopoly position …but it’s for ver good reason so I’ll keep quiet.”

Anyway, this should serve as a good kick in the pants for bad actors (that’s you, advertisers) to update their scripts to be asynchronous.

Progressive Web Apps Simply Make Sense - Cloud Four

Progressive Web Apps versus native is the wrong question because every step on the path to a Progressive Web App makes sense on its own, irrespective of what a company does with their native apps.

Not all of your customers are going to have your app installed. For those who visit via the web, providing them with a better experience will make them happier and generate more revenue for your business.

It’s really that simple.

SpeedCurve | PWA Performance

Steve describes a script you can use on WebPageTest to simulate going offline so you can test how your progressive web app performs.

The scorpion express | Butterick’s Practical Typography

This is easily the most wrong-headed piece of writing I’ve read in a long time.

“But cus­tomers ben­e­fit from smaller file sizes too, be­cause that makes web pages faster.” Cer­tainly, that was true in 1996. And some web de­vel­op­ers per­sist with po­lit­i­cal ob­jec­tions. But with to­day’s faster con­nec­tions—even on mo­bile—op­ti­miz­ing for file size is less use­ful than ever.

I’ll leave it to you to see the logical flaws in every one of the arguments presented here by Matthew Buterick. Meanwhile I’m going to get off his lawn.

What, Exactly, Makes Something A Progressive Web App? | Infrequently Noted

Alex runs through the features that a progressive web app must have, should have, and would be nice to have.

In general, installability criteria are tightening. Today’s Good-To-Haves may become part of tomorrow’s baseline. The opposite is unlikely because at least one major browser has made a strong commitment to tightening up the rules for installability.

Right now, this is in the nice-to-have category:

Mobile-friendly, not mobile-only.

Personally, I’d put that in the must-have category, and not just for progressive web apps.

Anyway, read on for some advice on testing and tooling when it comes to evaluating progressive web apps.

How Google And Others Are Plotting The Revenge Of The Web App | Fast Company | Business + Innovation

It’s always, um …”interesting” when a mainstream publication covers a topic from the web’s bikeshed. In this case, it’s progressive web apps, and—apart from the sensationalist headline—it’s actually not that bad at all.

Webfonts on the Prairie · An A List Apart Article

A good ol’ polemic in favour of using web fonts. It’s a good read although I strongly disagree with this line of reasoning:

The average internet speed in the United States today is three times as fast as it was in 2011.

But that americentric view is redeemed later on:

The World Wide Web may be a creation of the West, but now, at long last, it needs to get ready for the rest.

I may not agree with all the points in this article, but I think we can all agree that if we’re going to use web fonts, we must use them responsibly …otherwise users are going to treat them as damage and route around them.

The Building Blocks Of Progressive Web Apps – Smashing Magazine

This is a really good overview of progressive web apps:

An ideal web app is a web page that has the best aspects of both the web and native apps. It should be fast and quick to interact with, fit the device’s viewport, remain usable offline and be able to have an icon on the home screen.

At the same time, it must not sacrifice the things that make the web great, such as the ability to link deep into the app and to use URLs to enable sharing of content. Like the web, it should work well across platforms and not focus solely on mobile. It should behave just as well on a desktop computer as in other form factors, lest we risk having another era of unresponsive m.example.com websites.

Writing Less Damn Code | HeydonWorks

I’m in complete agreement with Heydon here:

But it turns out the only surefire way to make performant Web Stuff is also to just write less. Minify? Okay. Compress? Well, yeah. Cache? Sounds technical. Flat out refuse to code something or include someone else’s code in the first place? Now you’re talking.

Just like the “mobile first” mindset, if you demand that everything must justify its existence, you end up with a better experience for everyone:

My favorite thing about aiming to have less stuff is this: you finish up with only the stuff you really need — only the stuff your user actually wants. Massive hero image of some dude drinking a latte? Lose it. Social media buttons which pull in a bunch of third-party code while simultaneously wrecking your page design? Give them the boot. That JavaScript thingy that hijacks the user’s right mouse button to reveal a custom modal? Ice moon prison.

10K Apart

The 10K competition—spiritual successor to Stewart Butterfield’s 5K.org—is back. This time there’s no escape clause with web fonts or jQuery. You can lazy-load in more content after the initial 10K payload …but whatever you’re building needs to be usable in that first 10K.

Give it a go. There’s nothing like having a constraint to really get the creative juices flowing.

gmetais/sw-delta: An incremental cache for the web

Here’s an interesting use of service workers: figure out the difference (the delta) between the currently-cached version of a file, and the version on the network, and then grab only the bits that have changed. It requires some configuration on the server side (to send back the diff) but it’s an interesting approach that could be worth keeping an eye on.

Official Google Webmaster Central Blog: AMP your content - A Preview of AMP’ed results in Search

Google’s search results now include AMP pages in the regular list of results (not just in a carousel). They’re marked with a little grey lightning bolt next to the word AMP.

The experience of opening of those results is certainly fast, but feels a little weird—like you haven’t really gone to the website yet, but instead that you’re still tethered to the search results page.

Clicking on a link within an AMP spawns a new window, which reinforces the idea of the web as something separate to AMP (much as they still like to claim that AMP is “a subset of HTML”—at this point, it really, really isn’t).

Hidden Expectations - daverupert.com

Over the years I’ve come to realize that most difficult part of making websites isn’t the code, it’s the “hidden expectations”, the unseen aspects I didn’t know were my responsibility when I started: Accessibility, Security, Performance, and Empathy.

A Comprehensive Guide to Font Loading Strategies—zachleat.com

A terrific rundown of all your options when it comes to web font loading.