The overall interoperability score for Interop 2025 has reached 92% test pass rate!! Looking good!

So happy that "Added WebGPU support for WebXR" (developer.apple.com/documentatio...) made it! Thank you!

Curious about web technology coming to Safari? How about field-sizing, position-visibility, random(), scrollbar-color, hidden=until-found, auto-expanding <details>, command & commandfor, Largest Contentful Paint, CHIPS, scrollend event, Navigation API & more! developer.apple.com/documentatio...

Safari 26.1 comes with many, many bug fixes! :)

Safari 26.1 arrives today. What does this bring developers? Many improvements to Anchor Positioning. A refactor of how WebKit handles CSS Units, bringing relative units (rlh, ic, cap, cqw, cqi, cqmin, cqmax) to SVG for the first time. And many other fixes. webkit.org/blog/17541/w...

There's a new #CSS Working Group poll to get feedback on different names for the infamous 'Pinterest' layout. - Since it uses many of the grid-* properties, `grid` will be in the name somewhere - We don't use metaphors in CSS names, so `masonry` is not listed here docs.google.com/forms/d/e/1F...

Between one thousand and four thousand tests fail in only one browser — out of over two millions tests. That’s still an incredibly high pass rate.

Got thoughts about Web Push? So many web developers talked about it for years… and now I hear nothing. Are you using Web Push? Have you learned about Declarative Web Push?

After seeing me with a horror novel my coworker told me that he wants to read something really scary so I sent him an article with the title: “Repeat COVID-19 Infections Could Double Your Risk of Long COVID.”

We’ve been busy over here. For those asking about “stable” — yes, the work that’s currently in Safari Technology Preview will land in stable. Yup.

Interop 2025 is looking good!

Largest Contentful Paint (from Core Web Vitals) is now available in Safari Technology Preview. webkit.org/blog/17504/r...

It’s really disheartening to see people who admit this regime is doing eugenics fail to understand the ways in which chronically ill, disabled, and immunocompromised people are just absolutely fucked by Long Covid

Meanwhile, there’s an incredible amount of offensive content on Sora — including video after video that’s deeply and shockingly anti-Semitic, and I haven’t heard anyone call it out.

I discovered a useful feature in Safari DevTools today. We can show the flex items order like (item #1, item #2, etc) and their corresponding order value (if it's changed). It's called "Order Numbers". @webkitgtk.org

i love the spreadsheet analogy here

Was surprised to see that, even though CSS Grid isn't a new feature, it's still high on the list of things devs find confusing, so wrote a post about it. I focus on a new mental model I think is helpful. Let me know what you think! webkit.org/blog/17474/c...

I wish Command Invokers had a different name that made it most easy for a web developers to understand what it is. I’d call it Button Commands.

I just learned web fonts have been supported for Initial Letter since Safari 18.4+. (Still prefixed, but before you couldn’t use a web font.) Yay!!! Have you used initial letter in CSS? Do you want to?

Anchor Positioning has a way to declare where the item appears. Use the `position-area` property with pre-named areas! @saron.bsky.social realized maybe some of the names are confusing. Read more & help decide — should the names be changed? webkit.org/blog/17417/p... What do you think??

Give folks their flowers No, I mean right now. Go tell someone you loved their work right now. They're on social media just say it, it has never been easier "They know how much people love--" no they don't go say it right now to a composer or artist or game dev or writer or anyone AAAAAAAHHHHHHHHH

I accidentally called someone on the phone phone, instead of FaceTime Audio. (Or Zoom/WebEx/etc.) Wow, the audio quality is of course much worse, and I am so much more tired afterwards. Phone audio quality is exhausting.

With everything going on, standing up for privacy is more important than ever. youtu.be/0HjDpPnxcP0

calling autism a “tragedy” and saying that there should be fewer autistic people are eugenicist talking points. Everyone who opposes such views also needs to recognize the ways in which everyday ableism left the door wide open for a person like RFK Jr.

Don't tell me boycotts don't work

Wow, people are really bending over backwards to justify shipping a new web API that definitely has a strong formal objection. So much twisting of logic to try and make it make sense. So many half-truths being stated as reality when they are not reality. The cognitive dissonance. The anger & hate.

Still fighting form controls with endless CSS? Tim Nguyen from Apple reveals upcoming improvements that will finally make them customizable with pure CSS #Forms #DevSummit25 Tim Nguyen at Dev Summit 25 bit.ly/3Iooh20

Why am I suddenly seeing a bunch of well-known & well-respected web dev guys returning to X, using it as their main social media channel? Why am I not surprised? Disappointed. Jaded. Of course they are. Watching the mass public turn to the far right is hard.

Did you know that on macOS, you can update just to Safari 26, while remaining on macOS 15 Sequoia or even macOS 14 Sonoma? Go to  > System Settings > General > Software Update. Under “Also Available” you’ll find Safari listed. Click “Update Now”.

CSS `random()` just landed in Safari Technology Preview. We are the first browser to implement! “There are ongoing discussions in the CSS Working Group about the specification, and several open issues remain about whether this approach best serves developers.” webkit.org/blog/17285/r...

Safari 26 is here!!! Anchor Positioning, Scroll-driven animations, High Dynamic Range images, the new HTML <model> element, the all-new Digital Credentials API, SVG icon support, WebGPU, WebKit in SwiftUI, every site can be a web app on iOS and iPadOS, and much more. webkit.org/blog/17333/w...

Have you been meaning to learn how to use CSS Subgrid? Here’s a very practical and straightforward how-to from @saron.bsky.social! webkit.org/blog/17339/s...

🚨 UPDATE on the current COVID vaccine access situation in the US. Please note that this is based on state laws but different things may be happening on the ground, and some pharmacies are defaulting to federal guidelines instead of state laws.

Hey look I know that tool!

There's a ridiculous amount of cool stuff! They ate!

Please stop inheriting the box-model. The supposed use-case for that is extremely out-dated, inheritance doesn't really help, and it actively makes real box-sizing use-cases more difficult! This #CSS best practice was never the best to begin with: www.oddbird.net/2025/09/04/b...

Holy fuck Safari is dropping so much gold in this release 😍

I will not deny it: it is a lonely thing (it is a very lonely thing) to continue taking precautions after your coworkers and family and friends have abandoned taking them, but in such moments I remind myself that it is better to feel lonely than to have this virus for company.

The Safari team are seriously on fire.🔥 Progress so far is insane.

Did you see? The Interop Project is now asking for proposals for what should be included in Interop 2026. Now until Sept 24th. Learn exactly how to submit something at: webkit.org/blog/17320/s...

Did you see? Th Interop Project is now asking for proposals for what should be included in Interop 2026. Now until Sept 24th. Learn exactly how to submit something at: webkit.org/blog/17320/s...

Wow there are 22 new features in today’s Safari Technology Preview 277! Including `field-sizing`, `scrollbar-color`, `position-visibility`, more of Anchor Positioning, `command` and `commandfor` attributes on buttons, `scrollend` event, Navigation API… and more: webkit.org/blog/17324/r...

CSS Weekly #619 👀 Create Scrollspy effects using only CSS 🧮 Learn how the random() function works ↩️ Restore deleted files in VS Code Featuring @sarasoueidan.com, @jensimmons.bsky.social, @shadeed9.bsky.social, @amitsheen.bsky.social 2x, @anatudor.bsky.social. 🙏 cssw.io/ssue-619

I will die on this hill: it isn’t hard to say “at the height of the pandemic” or “at the start of COVID” during a podcast interview. Producers, hosts, don’t let your guests say “during COVID” like this thing is over. Correct them. Ask them to say the sentence again. This is your job.

You still have time, The State of HTML 2025 survey is live. Browser vendors use this data to prioritize features, fix incompatibilities. Standards bodies use it too. It’s not just a survey, it’s influence. Take 10 minutes. Share what you care about. 👇 stateofhtml.com/en-US

With health agencies collapsing, it's never been more important for all of us to play active roles in protecting each other's health. A couple of easy things you can do: 1️⃣ Wear a well-fitting mask and distribute them to others 2️⃣ Spread word about updated vaccines and help others make appointments

If the lack of data makes it difficult for you to know exactly how bad the current Covid wave is, just look at the newspaper of record’s recent headline: “Covid is spreading again this summer,” and remember if they have to admit the virus isn’t gone this wave must be pretty bad.

A gentle introduction to #CSS anchor positioning by @saron.bsky.social webkit.org/blog/17240/a... — I'm loving all the simple guides to new CSS features that are now being published on the webkit blog. It's slowly becoming a great resource to stay up-to-date with the latest in #CSS.

Did you know there’s work going on to add a `random()` function to CSS?? You can try it out today in Safari Technology Preview. Learn what it means, how to use it and see a bunch of examples at: webkit.org/blog/17285/r...