Web Standards

May 15
Browsers treat big sites differently
How Safari and Firefox quietly patch the web to keep big sites working.
May 14
The HTML Sanitizer API
Browser-native XSS-safe HTML insertion without DOMPurify or other libraries.
May 13
Soon we can finally banish JavaScript to the ShadowRealm
A look at the TC39 ShadowRealm proposal for isolating JavaScript in clean execution contexts.
May 12
WebKit features for Safari 26.5
The :open pseudo-class, element-scoped random(), Origin API, and 63 bug fixes.
May 11
How to control infinite CSS animations
Speed up, slow down, and reverse animations with animation-composition and CSS variables.
May 8
From React to native web with nanotags: a migration that saved 100 KB
How Evil Martians replaced React and Ark UI with Web Components and a 2.5 KB wrapper library.
May 7
Using safe-area-inset to build mobile-safe layouts
How to keep notches, cutouts, and home indicators from overlapping your UI.

May 14
The HTML Sanitizer API
Browser-native XSS-safe HTML insertion without DOMPurify or other libraries.
April 30
The web is fun again: first experiments with HTML in <canvas>
An experimental Chrome API that draws real HTML into <canvas>, with pixel and shader effects.
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 13
Progressive web components
An HTML-and-CSS-first library for building web components that hydrate with JS.
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.

May 11
How to control infinite CSS animations
Speed up, slow down, and reverse animations with animation-composition and CSS variables.
May 7
Using safe-area-inset to build mobile-safe layouts
How to keep notches, cutouts, and home indicators from overlapping your UI.
May 6
What’s new in Chrome 148
Name-only container queries, at-rule() in @supports, lazy <video> and <audio>, Prompt API, and more.
May 5
Media queries range syntax
How CSS comparison operators replace overlapping min-width and max-width breakpoints.
May 1
SVG from scratch
Carmen Ansio presents SVG not as a file format but as a DOM you can style and script.
April 29
Scroll-driven animations
Josh Comeau dives into CSS animation-timeline and maps keyframes over scroll distance.
April 17
Introducing masonry-gridlanes-wc: a native-first masonry web component
A web component with native CSS masonry support and a JavaScript fallback.

May 14
The HTML Sanitizer API
Browser-native XSS-safe HTML insertion without DOMPurify or other libraries.
May 13
Soon we can finally banish JavaScript to the ShadowRealm
A look at the TC39 ShadowRealm proposal for isolating JavaScript in clean execution contexts.
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 31
Form-associated custom elements in practice
Retrofitting AgnosticUI with ElementInternals and form validation.

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.

May 15
Browsers treat big sites differently
How Safari and Firefox quietly patch the web to keep big sites working.
May 12
WebKit features for Safari 26.5
The :open pseudo-class, element-scoped random(), Origin API, and 63 bug fixes.
May 6
What’s new in Chrome 148
Name-only container queries, at-rule() in @supports, lazy <video> and <audio>, Prompt API, and more.
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.