Arrived at #TPAC in Kobe, Japan. Very confused by everything around (first time in Asia, come on) and still jet-lagged, but started exploring the city.

setHTML(), Trusted Types and the Sanitizer API. Ollie Williams shows how these APIs protect against XSS by sanitizing HTML safely and enforcing trusted types. Supported in Firefox Nightly and Chrome Canary, with wider adoption coming. #security #html olliewilliams.xyz/blog/sanitiz...

Chrome 142 adds range syntax for CSS style queries, interestfor attribute for buttons and links, unified <select> rendering, SVG download support, WebGPU and FedCM improvements, permissions for local network access, and more. #browser #chrome developer.chrome.com/release-note...

Deprecating XSLT in browsers. Chrome plans to remove XSLT (the XML transformation language) due to low usage and security risks. Deprecation starts in version 143, full removal in 155. WHATWG, Firefox, and Safari expressed support. #browser #chrome groups.google.com/a/chromium.o...

I build websites!

📣 Firefox 144 is out! What's new for developers: 🧩 View Transition API for SPAs ⚙️ New Map/WeakMap methods (getOrInsert) 🧱 Element.moveBefore() 📱 ScreenOrientation.lock() 🕐 Built-in time picker for <input type="datetime-local"> (🧪exp.) Read more 👇 developer.mozilla.org/en-US/docs/...

Кастомные функции и if() в CSS. Юна Кравец и Брамус возвращаются в новом составе CSS Podcast. В свежем эпизоде — про нетипичные для CSS новинки, которые появились в Chrome в этом году и сильно поменяют, как мы пишем стили в будущем. #css #podcast thecsspodcast.libsyn.com/92-css-if-an...

As an experiment, we (the Firefox team) wanted to try a new way to get feedback on which Interop proposals matter most. So, here's a web app where you can rank the proposals you care about, giving us data we can use when reviewing which ones to champion. interop-rank.jakearchibald.com

Представляем React Foundation. Команда React объявила о запуске некоммерческой организации в рамках Linux Foundation, куда перейдут React, React Native, и вспомогательные проекты вроде JSX. Поддержку фонду окажут Amazon, Meta, Microsoft, Vercel и другие компании. #react react.dev/blog/2025/10...

Help us make MDN even better for you! 📣 We’re running a short survey to understand how developers use MDN in their day-to-day work and learning. ⏱️ Takes ~10 minutes ✅ All questions optional 🔒 Responses are anonymous Take the survey 📝 survey.alchemer.com/s3/8409929/...

Эффект жидкого стекла в браузере: рефракция на CSS и SVG. Крис Фейхо экспериментирует с SVG-фильтрами, чтобы добиться противоречивого, но очень привлекательного эффекта из будущих версий iOS и macOS. #css #svg kube.io/blog/liquid-...

Interop 2026 is now open for proposals! This is your chance to tell browser-makers which well-defined, well-tested features you wish had better support across browsers. ⬇️ Here's how ⬇️ github.com/web-platform...

Folks who use Firefox Developer Edition: What drew you to that version rather than Firefox Release/Beta/Nightly?

Arrived just in time for vacation 🤓 shadycharacters.co.uk/books/face-w...

Yay! It's the first Firefox release since I've joined the team, so let's take a look at some of the new developer-facing features in Firefox 142… 🧵

Gecko: Intent to ship web apps in Firefox for Windows

MDN just got a glow-up! 🌟 We’ve completely rebuilt our front end, redesigned, reengineered, and ready to help you find what you need. ✨ New search ✨ Improved typography & code rendering ✨ Sleeker nav & icons Read more 👇 developer.mozilla.org/en-US/blog/...

Starting my new role on Monday. Could be anywhere.

Div is not a button, you say. How about li? Looks legit. <li _ngcrap routerlink="/activities" tabindex="0"> Activity stream </li>

MDN is 20 years old! 🥳 🙏 A huge thank you to... The devs who read and trust MDN The contributors who improve it Everyone working on the web platform who shares our mission. Here's how we celebrated with the web.dev team! 🧁 developer.mozilla.org/en-US/blog/...

This week’s character is chunky, charming, and surprisingly easy to build. If you can style a <button>, you can create this froggy. Seriously. 🐸 Learn how basic CSS building blocks turn into a froggy with cheeks, toes, and a fly. youtu.be/rRsZDu7Ax3I

I guess I’m not a pro anymore 🥲 Jumped from 15” Pro M1 Max to just 13” M4 Air and can’t really tell the difference, even for the podcast production workflow. Not sure if I’ve ever used the extra ports that much.

Most of the people: Huh? 🤔 Me: There’s no way you can use Shure SM7B on a stand like this because the XLR port is blocked 🙄 (Étoile S01E02)

How sausages are made, featuring @brucel.bsky.social #cssday

You don’t have to be a GeoGuessr expert to spot the city in the photo. Just walking here feels like a crime 😬

Sold out. But our live stream isn't. cssday.nl/live-stream....

This book didn’t age well 🥲 (Hail Mary Project by Andy Weir)

[New blog post] Are CSS Carousels accessible sarasoueidan.com/blog/css-car... In this post, I share some important insights from examining the accessibility of CSS-only carousels that use new features introduced in the #CSS Overflow Module Level 5 spec. #a11y

Ever wondered why colors look different across devices? 🌈 In the new blog by @pgurtovaia.bsky.social, you will learn, 👀 How humans perceive it 💻 How devices render it, and 🧑‍💻 What you, as a developer, need to know Dive deep 👇 developer.mozilla.org/en-US/blog/...

Today I join the DOM Core team at Mozilla. Couldn't be happier. www.keithcirkel.co.uk/joining-mozi...

Planned a four-day CSS trip to Amsterdam in June: June 4, Pre-CSS Day meetup www.meetup.com/coven-of-wis... June 5–6, @cssday.bsky.social conference cssday.nl June 7, CSS Café meetup www.meetup.com/css-cafe/eve... Who’s coming? 🤓

I just discovered that you can’t debug styles in a shadow root in WebKit Web Inspector if they’re attached using adoptedStyleSheets (constructable stylesheets). For some reason, they’re considered user agent stylesheets 🤔 bugs.webkit.org/show_bug.cgi...

CSS Day 2025 is coming! Today we announce four new speakers: @ishadeed.com , @cydstumpel.nl , @utilitybend.com , and Amit Sheen. Also we announce an Advanced Design Token workshop by @bradfrost.com and @ian-frost.bsky.social on 4th of June. cssday.nl has all the info. See you in June?

Surely this new video won't make me seem like a crank. www.youtube.com/watch?v=QEJp...

JavaScript's date object has been tricky for years, but that will change soon. The NEW Temporal API brings, 🌍 Easily handle time zones 📆 Precise date math 🕒 Parse ISO strings without errors ⌛ Durations, date ranges, and more. Start exploring 👇 developer.mozilla.org/en-US/blog/...

The backstory here is - h1 was specified to have automatic heading level based on the number of ancestor sections (or aside, article, nav). - The default rendering was specified to (roughly) match, such that <section><h1> would have the same font-size and margin as h2 - cont...

CSS Day 2025 will take place on 5th and 6th of June in Amsterdam. #cssday cssday.nl

Starting from Chrome 122 and today’s Firefox 134, you can use align-self and justify-self (or the place-self shortcut) to control boxes with position: absolute and inset: 0. Waiting for Safari to catch up! codepen.io/pepelsbey/pe... developer.mozilla.org/en-US/docs/M...

Told you overlays are bad! "...despite the company’s claims, accessWidget did not make all user websites WCAG-compliant and these claims were therefore false, misleading, or unsubstantiated, in violation of the FTC Act." #a11y #accessibility www.ftc.gov/news-events/...

I have a suspicion that jzczhz and jzazbz color spaces were named by a cat walking on a keyboard 🥲 mastodon.scot/@svgeesus/11...

Happy browser choice day to those in Europe who celebrate! This is a second attempt to get it right. Brought to you by the iOS 18.2 update and the fine folks from open-web-advocacy.org

Inflation strikes again, but this time you might actually like it! The console already had $() and $$(), Firefox Nightly now has $$$(), which returns an array of nodes matching the selector, including those in the ShadowDOM. Hopefully this will make working with Web Components a bit easier 🙂

Gather around the fire, kids. Today, I will tell you an HTMHell story about native HTML color scheme switching. It’s getting dark early in Berlin in the winter… htmhell.dev/adventcalend...

Выпуск №451. Вадим Макеев и Алексей Симоненко про адвент-календари, Firefox, сложности Interop, новые фичи, Zed и как отобрать JavaScript у Oracle. Слушайте на Ютубе youtu.be/Nh6S5dfufOk Ссылки на сайте web-standards.ru/podcast/451/

8 AI Tips for Web Developers (and Their Careers): AI is everywhere and comes with many problems and challenges. Yet as web developers, we need to adapt to a reality with AI. A few ideas on how we can make use of AI to the benefit of our work and our careers.

🚨 Introducing the 2024 Web Almanac, our annual "state of the web" report! 🔖 almanac.httparchive.org/en/2024/ 21 chapters (11 publishing today, the rest to follow) 65 contributors for today's chapters (more to follow) 17M websites analyzed 83 TB of data processed 628 queries written

Выпуск №448. Никита Дубко и Алексей Симоненко про Safari TP 207, мгновенную навигацию, опасный npm, безголовые компоненты и width: stretch. Слушайте на Ютубе youtu.be/6WGx80VROcE Ссылки на сайте web-standards.ru/podcast/448/

With another wave of seasonal migration between social networks, let me remind you that I cross-post pretty much everywhere I can to stay in touch with scattered friends. I’m mostly active on Mastodon, but feel free to pick the one that works for you:

Have you seen any good articles or projects using Cascade Layers for CSS architecture? Modern CSS seems capable of something similar to BEM without complex tooling, but I’m struggling to make it work. You know, 15-year-old habits won’t let you go easy.

Performance is a key aspect of the user experience 🥲