Adactio: Links

Sensible jumps in responsive image file sizes

Some good thinking from Jason here. In a roundabout way, he’s saying that when it comes to responsive images—as with just about every other aspect of web development—the answer is …it depends.

joshje/svg-for-web · GitHub

If, like me, you’ve been using the “export to SVG” plugin for Fireworks and then opening up the resultant file to trim it down, Josh has got you covered: here’s a version of “export to SVG” that will result in much slimmer files.

I’m done with the web by Randy Luecke

I find it hard to agree with any part of this. To me, it shows a deep misunderstanding of the web—treating the web as just another platform, without understanding what makes it so special.

I think I may have found my polar opposite.

The hilarious obsession with file size is the start of my frustrations with the web community.

How to lose weight (in the browser)

A handy one-stop-shop for tips on improving front-end performance.

A List Apart Issue № 371

This issue of A List Apart is a great double-whammy. Lara Swanson has a ton of practical tips for front-end performance enhancements, and Brian dives deep into making your own icon fonts.

For discussion: viewport and font-size data in client hints

The “client hints” proposal looks really interesting: a way for user-agents to send data to the server without requiring the server to have a library of user-agent strings. But Scott has a few concerns about some of the details.

Anatomy of a responsive page load

The slides from Andy’s excellent pragmatic talk on performance and aggressive enhancement at the Responsive Day Out.

Responsive design – have we come full circle?

Everything old is new again. Ross noticed that many of the themes recurring at the Responsive Day Out hark back to best practices from over a decade ago: progressive enhancement, performance, good ol’ information architecture…

The Vanilla Web Diet by Christian Heilman

I like the sound of the book that Chris is writing for Smashing Magazine. It sounds like a very future-friendly approach to front-end development.

Test your app under slow network speeds

Some handy tips for simulating slow network speeds on your machine.

Setting a performance budget by Tim Kadlec

Tim talks about the very useful technique of setting a page-weight limit; something that Mark wrote about on the Clearleft blog recently.

On layout and web performance by Kelly Norton

This is handy: a look at which DOM properties and methods cause layout thrashing (reflows).

Performance as design by Brad Frost

Amen, Brad, Amen.

It’s time for us to treat performance as an essential design feature, not just as a technical best practice.

Speed up your site using prefetching by Jon Fox

More details on DNS prefetching, page prefetching and, controversial, page pre-rendering.

Front-end performance for web designers and front-end developers by Harry Roberts

A really good introduction to front-end performance techniques. Most of this was already on my radar, but I still picked up a handy tip or two (particularly about DNS prefetching).

At this stage it should go without saying that you should be keeping up with this kind of thing: performance is really, really, really important.

Implementing off-canvas navigation for a responsive website by David Bushell

This off-canvas demo is a great practical example of progressive enhancement from David. It’s also a lesson in why over-reliance on jQuery can sometimes be problematic.

Page Weight Matters | Chris Zacharias

An excellent tale of performance optimisation …complete with a coda on looking behind the numbers when it comes to analytics data.

Deploying New Image Formats on the Web - igvita.com

A well-reasoned argument for tackling image optimisation on the server, using content-type negotiation.

The Vanilla Web Diet | Smashing Coding

I wholeheartedly agree with Christian’s diagnosis of the average web page: it’s overweight to the point of obesity. Fortunately Dr. Heilmann has some remedies.

Trimming the Fat — Paul Robert Lloyd

A great in-depth description by Paul of how he optimised his site. More of this please!

Retina revolution

You’ve probably seen this already, but it’s really worth bearing in mind: when you’re scaling up JPGs for retina display you can safely reduce the image quality by quite a lot—to the point of getting the exact same file size as a higher quality image that’s half the size.

A List Apart: Articles: Mo’ Pixels Mo’ Problems

The kickass articles just keep on comin’. This one from Dave is a great overview of options for dealing with images in responsive designs.

JPEGmini - Your Photos on a Diet!

This looks like a really handy tool for reducing the file size of JPEGs without any perceptible loss of quality (in much the same way that ImageOptim works for PNGs)—available as a Mac app or an installable web service.

Latency: The New Web Performance Bottleneck - igvita.com

This is just wonderful! It combines almost all of my recent obsessions into one unified post: website performance (particularly on mobile) and the locations of undersea cables. The interactive map is the icing on the cake.

bandwidth (tecznotes)

Mike compares the bandwidth usage of the sites he most frequently visits. The results are grim.

The worst sins of the Flash years are coming back with a vengeance, in the form of CSS Frameworks and the magic dollar sign. There has seriously got to be a better way to do this.

filamentgroup/Southstreet

This is excellent! Scott, Wilto, and the gang at Filament Group have released the tools they use to help them craft performant responsive sites. Lots of excellent resources for conditional loading here.

How We Improved Page Speed By Cleaning CSS, HTML and Images | Dyn Blog

Some good practical advice on improving performance. This should all be familiar to you, but it’s always worth repeating.

Twitter Engineering: Improving performance on twitter.com

Well, well, well. It turns out that building your entire application, content’n’all, in JavaScript isn’t so good for performance.

Sweep the Sleaze | Information Architects

Some sensible advice from Oliver Reichenstein. Cluttering your social media icons isn’t helping and may actively be hindering your audience.

» The real conflict behind picture and @srcset (Cloud Four Blog)

Jason outlines the real challenge to every proposed solution for responsive images: they just don’t jibe with the way that browsers (quite rightly) pre-fetch images.

LukeW | Data Monday: E-commerce Performance

Time is money …especially when it comes to performance on the web.

HTTP Compression use by Alexa Top 1000 | Zoompf

An in-depth analysis (graphs! data!) of how popular sites are using—or not using—compression.

Highly optimized images for the web in 3 steps | pasz.nl/blog

Some practical advice for optimising your images on the web.

The state of responsive images | Feature | .net magazine

Wilto gives a thorough explanation of the state of things with responsive images, particularly the work being done at the Responsive Images Community Group at the W3C.

Mobile Battery Performance

This is my short explanation of Remy’s explanation of a BBC news article which is an explanation of an academic paper about battery performance of mobile devices when accessing websites.

Modern Web Development Part 1 – The Webkit Inspector

This is a very in-depth look at how to become a power user of the Web Inspector in Webkit browsers. I’m sitting down with a nice cup of tea to go through all of this.

10 questions about web performance – Jeremy Keith at Clearleft

I had a chat with the guys from Pingdom about performance’n’stuff. If I sound incoherent, that’s because this is a direct transcription of a Skype call, where, like, apparently I don’t, y’know, talk in complete sentences and yeah.

An Ajax-Include Pattern for Modular Content | Filament Group, Inc., Boston, MA

Scott walks through the code and thinking behind the conditional loading pattern on The Boston Globe site. This is such a useful and valuable pattern!

Pingdom Tools

A handy performance testing tool from Pingdom, similar to Google’s offering.

First thing you should do to optimize your desktop site for mobile « Cloud Four

Jason reiterates Bruce’s rallying cry: Performance First!

If you could only do one thing to prepare your desktop site for mobile and had to choose between employing media queries to make it look good on a mobile device or optimizing the site for performance, you would be better served by making the desktop site blazingly fast.

Bruce Lawson’s personal site : What Users Want from Mobile, and what we can re-learn from them

Bruce hammers home the importance of speed and performance on mobile (and frankly, everywhere).

So perhaps some of the time and effort put into media queries, viewports, avoiding scrolling, line length would actually be better employed reducing HTTP requests and optimising so that websites are perceived to render faster.

ImageAlpha — lossy compression for 24-bit PNG images

From Kornel, the genius who gave us ImageOptim, comes another Mac desktop tool for optimising PNGs, this time converting 24-bit PNG to 8-bit with full alpha channel.

nathanford/pngy - GitHub

A script that attempts to detect connection speed (by requesting a test file three times in a row) in order to determine whether hi-res images should be requested or not.

What We Don’t Know // Speaker Deck

The slides from Chris’s presentation on the known unknowns of the web.

Sirens | Aaron Mentele

Some very interesting results from testing background image downloads contained within media queries or overridden with media queries: it turns out that, in iOS at least, the browser is getting smarter and smarter.

On designing content-out (a response to Zeldman and others) | Stephanie Rieger

Stephanie details all the things we have to know about when designing for today’s broad range of devices: performance, capabilities, form factor, pixel density, and network latency.

These are all good points but I worry that if we just concentrate on the current device landscape, our processes won’t adapt to the future.

REDbot: <>

Oh, this is very handy indeed: a quick lint tool for HTTP so you can see what kind of headers are being sent. There’s a bookmarklet in the footer too.

Polyfilling The HTML5 Gaps With JavaScript

An in-depth look at browser polyfills: what they are, how they work, and how you can make your own.

Post Web site loads too slowly - The Washington Post

Performance matters. Here, the Washington Post compares its own weak performance (hampered by ads and tracking shite) to the optimised experience of porn sites.

Stubbornella » Blog Archive » Don’t Style Headings Using HTML5 Sections

Nicole provides a step-by-step explanation of why it will probably benefit you to add classes to your headings to ensure consistent styling without writing overly-verbose CSS.

Jake Archibald - Font-Face - Good vs Legal on Vimeo

Jake’s talk at DIBI earlier this year was absolutely fantastic. It features a rape reference, a story about pissing, and a Human Centipede metaphor.

It’s also very, very informative. Watch this.

Appcache Facts

A handy one-page cheatsheet for using HTML5’s appcache manifest file for offline storage.

mySociety » Blog Archive » Mobile operators altering (and breaking) web content

In an attempt to “optimise” performance, T-Mobile and Orange are actually breaking jQuery.

Page Speed Service Home

Performance shit just got real.

You can now sign up with Google to have your site pass every request through them and get your documents served up optimised.

Responsive web design from the future — Warpspire

I really like the thinking that’s gone into the design of Github, as shown in this presentation. It’s not really about responsive design as we commonly know it, but boy, is it a great deep dive into the importance of URLs and performance.

Don’t use IDs in CSS selectors? ❧ Oli.jp (@boblet)

I agree with Oli’s conclusion:

Save IDs for fragment identifiers or JavaScript hooks.

Tags: performance

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