Web Development (5)
How Running Your Own Website Is Much Better for You Than You Think
The typical reason for why professionals don’t have their own websites is that they don’t want to make the commitment, and yet that misses how the disadvantages people see are actually advantages. Renewed thoughts on how running your own website is an asset.
#234 · · design
An HTML Optimizer’s Config for HTML Minifier
Jad Joubran asked me about my configuration for HTML Minifier the other week, and in a hurry I pointed him to the config I had worked out for sum.cumo. In my own projects, however, I work with a different, more ambitious setup.
#233 · · html, performance, optimization
When to Open Links in a New Tab
Always open links in the same tab unless doing so could 1) disrupt a process, 2) risk data loss, or 3) confuse users.
CSS: When to Use Logical Properties
Logical properties are great and long overdue. They are great because they solve an ugly problem of international, multi-directional web development in that directionality does not need to affect your writing and managing of CSS anymore…
#231 · · css
Website Optimization Measures, Part IX
Random improvements and notes around compression and caching, content security and feature policies, IndieWeb markup, protocols in links, entity references, image formats, and ISBNs in URL paths.
#230 · · optimization

Upgrade Your HTML
I’ve written a very short book on improving HTML code: Upgrade Your HTML. Upgrade Your HTML is about one thing: Picking examples of HTML in the wild, and explaining how to make that code better. Kindly. Constructively. Thoroughly, as finding a balance between detail and brevity permits.
#229 · · books, html, minimalism, optimization
On Writing Better Markup
As HTML is so important and yet also so easy, everyone writes HTML, and everyone says they can write HTML. And with that they don’t just mean they are able to write HTML, but that they write good HTML, where “good” means “high quality.” That would be great news.
The Developer’s Fallacy of Close Collaboration With Designers
Working closely with designers makes sense and is awesome, notably for mutual understanding and efficiency. And yet there are also good reasons not to work closely with designers. For developers it’s important, for otherwise foolish, to be aware.
#227 · · design
Definition of Web Developer
Web developer, n.: A person who—
#226 ·
“Must Work Without JavaScript”
That websites should work without JavaScript has a long professional tradition, and for apps much the same has been asked for. Yet with the success and ubiquity of scripting, how relevant is it to make sure sites and apps “work without JavaScript”?
#225 · · javascript
Optional HTML: Everything You Need to Know
Optional HTML can be left out to improve performance, to guide code comprehension, and to hone the craft. An overview over all optional tags, rules around quotes for attribute values, and omissible attribute value defaults, as well as notes on pitfalls and tools.
#224 · · html, performance
When to Use “img,” “img@srcset,” and “picture” and “source”
I’ve disliked srcset and the whole family of ideas around it from the start because doing the same thing for the same purpose several times has usually looked like too much DX cost for too little UX gain to me. Two angles at what to use when.
#223 · · html
Image Compression: How to Super-Easily Set Up Automated Base Optimization
Setting up image compression tooling is easy—and for those who want to err on the safe side automatically employing lossless compression, it’s even easier with a solution from sum.cumo: Merlin.
#222 · · performance, optimization
The Problem With Web Development Checklists, or: The Frontend Checklist, Revised
Checklists are a great way to make sure nothing gets forgotten, yet they are problematic when they contain items that aren’t important. A few general thoughts and a very specific review of The Frontend Checklist—of which 33 guidelines appear useful, and 41 not (yet).
#221 · · html, css, javascript
Understanding Image Compression: Tooling and Context
Image compression plays an important role in performance optimization. It seems straightforward but is a little deceptive, however, because it consists not of one but two parts—and it’s usually lack of understanding of one part that causes problems.
#220 · · performance, optimization
A Crime Called Favicon
16×16, 30×30, 32×32, 48×48, 57×57, 60×60, 64×64, 70×70, 72×72, 76×76, 90×90, 96×96, 114×114, 120×120, 128×128, 144×144, 150×150, 152×152, 160×160, 167×167, 180×180, 192×192, 195×195, 196×196, 228×228, 256×256, 270×270, 310×310, 558×558.
#219 ·
How Can We Make Website Maintenance Work More Visible?
The maintenance and maintainability of websites is a much neglected topic. This is problematic because: We cannot not maintain. Yet primarily we may deal with a visibility problem that we could explore more options for.
#218 · · maintainability
Print Styling, the 3 Basics
Many sites are not prepared for print, and yet our users print, and they save through print. Therefore: Have a print style sheet, and be it a negative one. Hide what’s not usable or useful. Always test, and tweak when you want better.
Optional “@lang”
The lang attribute is one of HTML’s global attributes. If one doesn’t simply take it for granted, it begs a number of questions—and these suggest to drop W3C requirements around it, and to demand software to do the job.
#216 · · html, accessibility
What Happened on Google+, the Web Development Archives
Following a few philosophy posts to be archived, here are past entries related to web development. Nothing more, nothing less.
HTML and Performance: Leave Out Optional Tags and Quotes
As experts we should know what code is optional and leave it out, and our production systems should do a better job assisting us with that. After all the years of neglecting basic HTML optimization, let’s think about taking the next step and not ship optional HTML markup.
#214 · · html, performance, minimalism
Google Lighthouse and PWA
A review of Lighthouse’s PWA audits and the PWA category as a whole. Just in time to see it be superseded by Lighthouse 4, the major update that solves some (unfortunately not all) of those issues.
#213 ·
7 Questions for Jens Oliver Meiert About the GDE and Chrome Dev Summits 2018
#212 · · interviews
On Visions for Performance, or: Performance Optimization Is a Process
It’s smart to have a vision for what one wishes to achieve for the performance of a site or app. Yet even the soundest approaches to performance visions have their problems, and in them we recognize that performance, or performance optimization, is indeed a process.
#211 · · performance, optimization
Should Designers Code
Arguments for a “no” to a recurring question: Why we may want to give designers all freedom in the world, not to be limited in what they’re trained to do best.
#210 · · design
Performance Rule #1: Do What You Need to Do—But Not More
Web Performance has over the age of the Web not only turned into a discipline by itself, but also a complex one at that. While important much less so for revenue but for user experience and accessibility reasons, there’s a particular angle at performance that makes the matter very simple: the pragmatic angle.
#209 · · performance
How to Configure Lighthouse for Balanced Quality Websites
Google’s Lighthouse is a great tool even though it has some issues. Fortunately, it’s possible to configure Lighthouse to one’s own views on what matters. Here’s the config that I like to use.
#208 · · quality
A Short Guide to Minimal Web Development
There’s an art and even a bit of magic around simple frontend code. Writing such code comes with a few preconditions: perhaps a firm understanding of core technologies, a lot of practice, public scrutiny, and then some. Thoughts.
#207 · · minimalism
Web Development and the GDPR
Who shares or presents code has a special responsibility, because for both the uninitiated and the quality-minded such code should be of a considerable standard. European privacy legislation ups the ante.
#206 ·
37 Theses on CSS and Web Development
CSS Optimization Basics ends with a list of key ideas. From acknowledging that we don’t always write perfectly efficient and maintainable and understandable code to leading by example.
#205 · · css
AMP, a Strategy
There are problems with AMP. My recommendations: Avoid AMP; or use it, exclusively, on the most relevant pages; or go all-in, for AMP-only.
#204 · · maintainability
The Craft of CSS
When we type down CSS like we’ve done 20 years ago, and when we work with ever more abstractions, what does that mean for our craft?
#203 · · css
The Dangers of Being a Web Developer
Video, slides, and resources for my talk at beyond tellerrand in Düsseldorf.
#202 ·

CSS Optimization Basics
My latest little book, covering mindsets needed for writing effective style sheets, optimization options during operation and for production, and useful resources to aid and inform the work with CSS.
#201 · · books, css, optimization
User-Centered Web Development
When we think of user focus we easily think of usability tests, following a usually strong wish to produce something that’s actually useful. For us as web developers, focus on the user has a tendency to appear distant though…
#200 · · usability, accessibility, performance
HTML, CSS, and Dependency Direction
Adam Wathan wrote one of the most interesting web development articles I’ve read in the last few months: CSS Utility Classes and “Separation of Concerns.” At least until “Phase 3” there’s much to learn about current web development…
How Declaration Repetition Developed Over Time, a Statistically Insignificant Sample
We know that there’s excessive declaration repetition in the Web’s style sheets, that each declaration is on average repeated 2–3 times, often needlessly. We know that this repetition is a little less bad on tech sites…
#198 · · css
The Compact Guide to Web Maintainability: 200 Tips and Resources
The result of reviewing, normalizing, rephrasing, sorting, and testing 134 responses to a maintainability survey that yielded more than 500 data points, to form a new guide, a new and more definite guide to web maintainability.
#197 · · html, css, maintainability
The Two Extremes of Writing CSS, and What We Can Learn From Them
Extremes can be useful. In practice they help get the maximum out of a given approach, and in theory they can show what we’re headed to. Compare two ways of writing CSS—like Tachyons or Atomic CSS, and 2000’s idealistic engineering.
#196 · · css
Expert Web Development: A 3rd Key Differentiator
As web developers we have decisions to make and our decisions depend on a few variables. Two that have become much more important over the years are the one of code for research or production, and the one of web site or app…
#195 ·
An Ode to Smashing Magazine
Excitement about a success story.
#194 ·
Performance of CSS Selectors Is Still Irrelevant
From my upcoming book on CSS optimization: Selector performance is not something to optimize for as the price we pay for it is terrible: We micro-manage our work for gains that aren’t noticeable.
#193 · · css, performance
On Big Picture Thinking in Web Development
Thoughts on thinking outside the box, in tech, with examples ranging from selector performance to a general development vision, to illustrate how very different issues can all reach beyond their perimeter.
#192 · · performance, maintainability, accessibility, design
CSS: The Reason Why Selectors Should Be Ordered, Too
We’ve talked a lot about declarations as declarations are at the heart of our work with direct consequences for the quality of our style sheets. We’ve not talked much about selectors, though, and that may be a mistake.
#191 · · css
Static Site Generation With Grow: How to Set Up Syndication Feeds
Grow is a static site generator that I’ve slowly been switching to on my own projects. Here I wish to lay out how to do something with Grow that’s not overly difficult, but also not well-documented—to set up syndication feeds.
#190 ·
DRY CSS: How to Use Declarations Just Once, Effectively
Using declarations just once is one way to control repetition in style sheets. It’s not a silver bullet, as we’ve seen with recent data, but it’s so powerful as to make for a key style sheet optimization method.
#189 · · css, optimization
5 Reasons Against Resets, Normalizers, Reboots
A word about one of CSS’s horsemen of the apocalypse.
#188 · · css
The 3 Levels of Code Consistency
Consistency is a factor for code quality and one of the key reasons why we need coding guidelines. Interestingly enough there are three levels of consistency: individual, collective, and institutional.
#187 · · quality
Understandable-Simple vs. Minimal-Simple Code
Code simplicity seems to be a goal quite worthwhile, contributing to better understanding, greater robustness, and higher quality. That’s at least what comes to my mind when looking at the matter…
#186 · · minimalism
On Enforcing Coding Guidelines
Surprisingly a snippet from The Little Book of Website Quality Control, not the one of HTML/CSS coding guidelines, a few thoughts on enforcing coding standards.
#185 · · management