Web Standards

April 27

The end of responsive images

How sizes="auto" with loading="lazy" lets browsers handle most responsive images.

April 24

Your options for preloading images with JavaScript

Five approaches compared with their caching and CORS trade-offs.

April 23

Playwright accessibility testing: what axe and Lighthouse miss

Practical Playwright patterns for testing what automated scanners miss.

April 22

Highlights from Git 2.54

New git history reword and git history split commands for safer history editing.

April 21

Firefox 150 release notes for developers

New CSS features, media pseudo-classes, animation range, and ariaNotify().

April 20

Fully local code embeds

A web component for isolated code sandboxes without third-party embeds.

April 17

Introducing masonry-gridlanes-wc: a native-first masonry web component

A web component with native CSS masonry support and a JavaScript fallback.

April 27

The end of responsive images

How sizes="auto" with loading="lazy" lets browsers handle most responsive images.

April 20

Fully local code embeds

A web component for isolated code sandboxes without third-party embeds.

April 7

Getting your article shared: tips from ten years of newsletter curation

Practical advice on OG tags, sharing images, titles, blurbs, and canonical URLs.

April 2

Squarespace and web standards: how we helped bring HTML video and audio lazy loading to today’s browsers

How Squarespace engineers contributed lazy loading for video and audio to the web platform.

March 31

Form-associated custom elements in practice

Retrofitting AgnosticUI with ElementInternals and form validation.

March 19

Abusing customizable selects

Three creative CSS demos with folders, cards, and emojis.

March 13

You don’t know HTML tables

Advanced deep-dive into table vocabulary, semantics, and the Table Object Model.

April 15

Modern CSS feature support for shadow DOM

Tracking CSS feature parity across the shadow DOM boundary.

April 10

Inverted themes with light-dark()

Adaptive theme switching with CSS container style queries and a JS polyfill fallback.

April 6

What is CSS containment and how can I use it?

How contain values, shorthands, and content-visibility cut unnecessary browser work.

April 3

The great CSS expansion

CSS features that replace hundreds of kilobytes of JavaScript libraries.

March 30

CSS is DOOMed: rendering DOOM in 3D with CSS

Every wall, floor, and enemy is a <div> positioned in 3D space.

March 27

The Layout Maestro, a practical CSS course on building web layouts

Learn to think about layout decisions through visual lessons and demos.

March 26

Under the hood: a closer look at the CSS architecture behind the redesign

Cascade layers, design tokens, light-dark(), and container queries in action.

April 24

Your options for preloading images with JavaScript

Five approaches compared with their caching and CORS trade-offs.

April 20

Fully local code embeds

A web component for isolated code sandboxes without third-party embeds.

April 13

Progressive web components

An HTML-and-CSS-first library for building web components that hydrate with JS.

April 1

Native JSON modules are finally real

Import attributes syntax now works in browsers and runtimes without bundlers.

March 18

Temporal: the 9-year journey to fix time in JavaScript

From TC39 proposal to Stage 4, with a shared Rust implementation across engines.

February 27

Making WebAssembly a first-class language on the web

Component model could remove JS glue, simplify loading, and speed up web API access.

February 16

State of React 2025 results are live

React 19, CRA deprecation, CVEs and RSC debates, and AI tooling shaping the ecosystem.

April 23

Playwright accessibility testing: what axe and Lighthouse miss

Practical Playwright patterns for testing what automated scanners miss.

March 13

You don’t know HTML tables

Advanced deep-dive into table vocabulary, semantics, and the Table Object Model.

March 11

Everything you never wanted to know about visually-hidden

Two decades of CSS hacks for accessible hiding and why there is still no native solution.

March 5

A new meta tag for respecting text scaling on mobile

How the proposed textscale meta tag honors OS text size settings on mobile.

February 19

Accessible building blocks for web

Short videos on headings, images, links, buttons, and forms, with practical accessibility tips.

February 10

Reference Target: having your encapsulation and eating it too

New proposal lets shadow DOM internals be referenced via the host without breaking encapsulation.

January 30

Five accessibility checks to run on every component

Essential component tests for keyboard, tokens, names, zoom, and screen readers.

April 21

Firefox 150 release notes for developers

New CSS features, media pseudo-classes, animation range, and ariaNotify().

April 8

What’s new in Chrome 147

View transitions, contrast-color(), border-shape, Math.sumPrecise, and more.

March 25

WebKit features for Safari 26.4

Grid lanes, WebTransport, Keyboard Lock API, and 191 bug fixes.

March 24

Firefox 149 release notes for developers

Popover hint, CloseWatcher, shape-outside: xywh(), and more CSS and API updates.

March 12

What’s new in Chrome 146

Scroll-triggered animations, Sanitizer API, WebGPU compat mode, and more.

February 25

Firefox 148 release notes for developers

HTML sanitizer, Trusted Types, CSS shape(), and more.

February 17

What’s new in Chrome 145

New CSS typography properties, an Origin object, and shorter UA string by default.