Tags: dt

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Tuesday, October 9th, 2018

AddyOsmani.com - Start Performance Budgeting

Great ideas from Addy on where to start with creating a performance budget that can act as a red line you don’t want to cross.

If it’s worth getting fast, it’s worth staying fast.

Monday, October 8th, 2018

The Hurricane Web | Max Böck - Frontend Web Developer

When a storm comes, some of the big news sites like CNN and NPR strip down to a zippy performant text-only version that delivers the content without the bells and whistles.

I’d argue though that in some aspects, they are actually better than the original.

The numbers:

The “full” NPR site in comparison takes ~114 requests and weighs close to 3MB on average. Time to first paint is around 20 seconds on slow connections. It includes ads, analytics, tracking scripts and social media widgets.

Meanwhile, the actual news content is roughly the same.

I quite like the idea of storm-driven development.

…websites built for a storm do not rely on Javascript. The benefit simply does not outweigh the cost. They rely on resilient HTML, because that’s all that is really necessary here.

Wednesday, September 26th, 2018

How to Build a Low-tech Website?

This is fascinating! A website that’s fast and nimble, not for performance reasons, but to reduce energy consumption. It’s using static files, system fonts and dithered images. And no third-party scripts.

Thanks to a low-tech web design, we managed to decrease the average page size of the blog by a factor of five compared to the old design – all while making the website visually more attractive (and mobile-friendly). Secondly, our new website runs 100% on solar power, not just in words, but in reality: it has its own energy storage and will go off-line during longer periods of cloudy weather.

Ping! That’s the sound of my brain going “service worker!”

I’ve sent them an email offering my help.

Thursday, September 20th, 2018

Good Tech Conf | Using technology for social good

This looks like a really interesting two-day event here in Brighton in November. Like Indie Web Camp, it features one day of talks followed by one day of making.

After a day of tech talks from project teams using their skills for social good, you’ll have the chance to take part in workshops and hackathons to use your own talents for a worthy cause.

And you get to go up the i360.

Tuesday, September 18th, 2018

Winston Hearn | What’s best for users

The incentives that Google technology created were very important in the evolution of this current stage of the web. I think we should be skeptical of AMP because once again a single company’s technology – the same single company – is creating the incentives for where we go next.

A thorough examination of the incentives that led to AMP, and the dangers of what could happen next:

I’m not sure I am yet willing to cede the web to a single monopolized company.

Thursday, September 6th, 2018

Chrome’s NOSCRIPT Intervention - TimKadlec.com

Testing time with Tim.

Long story short, the NOSCRIPT intervention looks like a really great feature for users. More often than not it provides significant reduction in data usage, not to mention the reduction in CPU time—no small thing for the many, many people running affordable, low-powered devices.

Wednesday, September 5th, 2018

The Font Loading Checklist—zachleat.com

This checklist came in very handy during a performance-related workshop I was running today (I may have said the sentence “Always ask yourself What Would Zach Do?”).

  1. Start Important Font Downloads Earlier (Start a Web Font load)
  2. Prioritize Readable Text (Behavior while a Web Font is loading)
  3. Make Fonts Smaller (Reduce Web Font load time)
  4. Reduce Movement during Page Load (Behavior after a Web Font has loaded)

The first two are really straightforward to implement (with rel="preload" and font-display). The second two take more work (with subsetting and the font loading API).

Monday, August 27th, 2018

Disable scripts for Data Saver users on slow connections - Chrome Platform Status

An excellent idea for people in low-bandwidth situations: automatically disable JavaScript. As long as the site is built with progressive enhancement, there’s no problem (and if not, the user is presented with the choice to enable scripts).

Power to the people!

Thursday, August 16th, 2018

On HTTPS and Hard Questions - TimKadlec.com

A great post by Tim following on from the post by Eric I linked to last week.

Is a secure site you can’t access better than an insecure one you can?

He rightly points out that security without performance is exlusionary.

…we’ve made a move to increase the security of the web by doing everything we can to get everything running over HTTPS. It’s undeniably a vital move to make. However this combination—poor performance but good security—now ends up making the web inaccessible to many.

Security. Performance. Accessibility. All three matter.

Friday, August 10th, 2018

Stop building for San Francisco

Overwhelmingly, our software is built by well-paid teams with huge monitors and incredibly fast computers running on a high-bandwidth internet connection. We run MacBook Pros, we have cinema displays, we carry iPhones.

That’s not what the rest of the world looks like.

Tuesday, August 7th, 2018

Securing Web Sites Made Them Less Accessible – Eric’s Archived Thoughts

This is a heartbreaking observation by Eric. He’s not anti-HTTPS by any stretch, but he is pointing out that caching servers become a thing of the past on a more secure web.

Can we do anything? For users of up-to-date browsers, yes: service workers create a “good” man in the middle that sidesteps the HTTPS problem, so far as I understand. So if you’re serving content over HTTPS, creating a service worker should be one of your top priorities right now, even if it’s just to do straightforward local caching and nothing fancier.

Thursday, August 2nd, 2018

Dynamic resources using the Network Information API and service workers

Smart thinking—similar to this post from last year—about using the navigator.connection API from a service worker to serve up bandwidth-appropriate images.

This is giving me some ideas for my own site.

The Bullshit Web — Pixel Envy

There is a cumulative effect of bullshit; its depth and breadth is especially profound. In isolation, the few seconds that it takes to load some extra piece of surveillance JavaScript isn’t much. Neither is the time it takes for a user to hide an email subscription box, or pause an autoplaying video. But these actions compound on a single webpage, and then again across multiple websites, and those seemingly-small time increments become a swirling miasma of frustration and pain.

I agree completely. And AMP is not the answer:

Given the assumption that any additional bandwidth offered to web developers will immediately be consumed, there seems to be just one possible solution, which is to reduce the amount of bytes that are transmitted. For some bizarre reason, this hasn’t happened on the main web, because it somehow makes more sense to create an exact copy of every page on their site that is expressly designed for speed. Welcome back, WAP — except, for some reason, this mobile-centric copy is entirely dependent on yet more bytes. This is the dumbfoundingly dumb premise of AMP.

Wednesday, July 18th, 2018

Picture 1 Picture 2

Roast pork.

Monday, May 21st, 2018

Identifying, Auditing, and Discussing Third Parties – CSS Wizardry

Harry describes the process he uses for auditing the effects of third-party scripts. He uses the excellent Request Map which was mentioned multiple times at the Delta V conference.

The focus here is on performance, but these tools are equally useful for shining a light on just how bad the situation is with online surveillance and tracking.

Pi-hole®: A black hole for Internet advertisements

This looks like a terrific use of a Raspberry Pi—blocking adtech surveillance at the network level.

Wouldn’t it be great if the clichéd going-home-for-Christmas/Thanksgiving to fix the printer/wifi included setting up one of these?

There’s an article about Pi-hole in Business Week where the creators offer some advice for those who equate any kind of online advertising with ubiquitous surveillance:

For publishers struggling to survive even with maximum ad surveillance, the Pi-hole team recommends a renewed focus on subscriptions, affiliate links, and curated endorsements for products and services that might truly interest users, similar to the way podcast hosts may talk about how much they personally enjoy a sponsor’s products. There’s nothing wrong with pitching people stuff they might enjoy, the team says. It’s just the constant, ever-intensifying surveillance that needs to stop.

Thursday, April 5th, 2018

Doc Searls Weblog · Facebook’s Cambridge Analytica problems are nothing compared to what’s coming for all of online publishing

What will happen when the Times, the New Yorker and other pubs own up to the simple fact that they are just as guilty as Facebook of leaking its readers’ data to other parties, for—in many if not most cases—God knows what purposes besides “interest-based” advertising? And what happens when the EU comes down on them too? It’s game-on after 25 May, when the EU can start fining violators of the General Data Protection Regulation (GDPR). Key fact: the GDPR protects the data blood of EU citizens wherever they risk having it sucked in the digital world.

Sunday, January 14th, 2018

A techie’s rough guide to GDPR — Cennydd Bowles

In this excerpt from his forthcoming book, Cennydd gives an overview of what GDPR will bring to the web. This legislation is like a charter of user’s rights, and things don’t look good for the surveillance kings of online advertising:

The black box will be forced open, and people will find it’s full of snakes.

Monday, November 27th, 2017

Network based image loading using the Network Information API in Service Worker | justmarkup

This is clever—you can use the navigator.connection API from a service worker (because it’s asynchronous) which means you can have a service worker script that serves differently sized images based on bandwidth.

The Fallacies of Distributed Computing (Applied to Front-End Performance) – CSS Wizardry – CSS Architecture, Web Performance Optimisation, and more, by Harry Roberts

Harry cautions against making assumptions about the network when it comes to front-end development:

Yet time and time again I see developers falling into the same old traps—making assumptions or overly-optimistic predictions about the conditions in which their apps will run.

Planning for the worst-case scenario is never a wasted effort:

If you build and structure applications such that they survive adverse conditions, then they will thrive in favourable ones.