Today I found my grandfather’s passport from 1943, containing evidence he traveled to Germany four times in 1944, and he seems to have visited Potsdam Babelsberg, the centre of German movie production.

Interesting linguistic experience: I called a help desk, and was helped very professionally, but the person spoke a weirdly accented Dutch that I couldn't pin down, and I had trouble understanding her.

The last few days I spent in historical studies, for the first time in many many years. And to my utter surprise I am now ready to argue that chapter 438 of the Thidrekssaga was composed in Aachen in the first quarter of the 9th century. https://quirksmode.org/ths/saga.php#ch438

A friend writes exam questions for students consisting of one correct and three plausible-but-incorrect answers ... ... and uses AI to generate the WRONG answers ... ... and thus has to REJECT inadvertently-correct answers ... ... and teaches AI the wrong things.

- All bills for performance.now() 2025 paid - 11 speakers for CSS Day 2026 more or less confirmed Time to start my annual no-conference-organising month.

Cleaning out my old clothes and found my old conference jacket with buttons. What’s Huffduffer again? Sounds familiar.

Home. No more conferences until late February.

#ffconf is starting, right on time.

Finally found #ffconf . Now sitting in the front row. Front. You get it?

Very sorry to all at #ffconf , but I'm heading to bed early. I had a root canal yesterday, and although it does not hurt for some reason it makes me extremely tired.

Did #ffconf change hotels or something? Still only four of us in the lobby

In hotel. Nobody was in the lobby. Disappointed. Still searching for #ffconf .

Considerably later than projected our hero has arrived at Gatwick train station in his quest for #ffconf

At Schiphol waiting for my flight to Gatwick an d then on to #ffconf . ETA hotel about 2.5 hours.

Breaking news: I do not have a hangover. No sir, I don't. At all.

This post would resonate more with me if it weren't exactly the teens and young adults of the 1990s that form the backbone of the current fascist movements. Witnessing the link to the past doesn't necessarily mean anything.

What do I recommend to a friend who's looking for an absolute-beginners CSS intro? "How do I make margins", that sort of thing?

"The difference between bandwidth and leadership is scalability" https://experiments.randomthebook.com/LinkedInWisdom/Index.html

Home. Sleep. No #perfnow day 3. I'm sorry.

If you don't want a firehose of modern insights into web performance cluttering up your timeline, don't follow @perfnow.nl

No lies detected.

Right in time for the conference!

If you don't want a firehose of modern insights into web performance cluttering up your timeline, don't follow @perfnow.nl

And #perfnow has started. A live stream is available via https://perfnow.nl/live-stream.html

Ticket. Bought one last week. Hotel. Check. Fuckingly annoying Easyjet site survived. Check. I think. So it seems I'm going to #ffconf . Will you? https://ffconf.org/2025

Two of our attendees were refused a visa 😞 Still, that means we have two tickets left if anyone wants to come at this late stage. perfnow.nl/tickets.html

Three tickets left. Buy now.

Schedule schedule on the wall, who has the best line-up of them all? perfnow.nl/schedule.html

OK, we're down to our last tickets. There's still room for people to join performance.now() on 30th and 31st of October (in two weeks and a bit), but it's time to decide. https://perfnow.nl Last tickets at https://perfnow-2025.eventstack.shop

OK, we're down to our last tickets. There's still room for people to join performance.now() on 30th and 31st of October (in two weeks and a bit), but it's time to decide. perfnow.nl Last tickets at perfnow-2025.eventstack.shop

Left picture: the pro-Palestina demonstration last weekend. Right picture: the anti-immigration demonstration this weekend. Both on the same place about 1km from my house. Arrests last weekend: 0. Arrests this weekend: dozens.

Anyone who works on browsers, or might know of where there might be information on this: I'm pretty sure that a few years ago I heard that browsers (maybe it was a specific one?) were optimizing custom props declared on the :root, and which didn't change values. Was this a thing? Is it still true?

In the tram I sat opposite two girls, who did some web design and were clearly about to become a couple. It was very sweet … and then one girl tried to impress the other by naming Adobe products… I hope someone can explain the importance of Adobe products in modern lesbianist lifestyles.

Today I went to the university library for the first time in close to 25 years in order to pick up my library card. They couldn’t help me because the printer broke down. And tomorrow they’re closed due to the official opening. It’s like coming home, except with more bureaucracy.

... and if I were to ask you "Who would you like to see speak at CSS Day 2026", what would your answer be? Name as many names as you like. I'd like to hear about people who aren't that well known yet.

performance.now() is coming! Every byte shipped carries a carbon cost. @inesakrap.bsky.social will present insights from the Sustainable Web Guidelines that result in a site that is not only fast, but also green and responsible. perfnow.nl/speakers.html#ines

Oh, good tip. Go here: https://www.linkedin.com/mypreferences/d/settings/data-for-ai-improvement and turn off "Data for Generative AI Improvement" on LinkedIn.

performance.now() is coming! LCP and INP measure loading and responsiveness of entire pages – but same-document soft navigations were much harder to measure. Until now! Michal Mocny will explain how new Performance APIs make this possible. perfnow.nl/speakers.html#michal

performance.now() is coming! LCP and INP measure loading and responsiveness of entire pages – but same-document soft navigations were much harder to measure. Until now! @mmocny.com will explain how new Performance APIs make this possible. perfnow.nl/speakers.html#michal

performance.now() is coming! As tooling improves, is performance testing becoming any easier? @csswizardry.com, who spends every day auditing client projects,, thinks confusion has increased. Let's ensure that every test we run has a purpose and gives us useful data. perfnow.nl/speakers.htm...

Today our congregation of faithful will sing the psalm What An Incredible Piece Of Shit Gimp Is

performance.now() is coming! @tammyeverts.com asks a seemingly-simple question: How Fast Is Fast Enough? She'll touch on questions — ranging from neuroscience to business metrics — to get you thinking about how you create, measure, and report your performance goals. perfnow.nl/speakers.htm...

justify-self on arbitrary elements is Chrome only for now, correct?

Re-aligning my business goals ... stand by ...

performance.now() is coming! Signal-based fine-grained reactivity works great, but @rich-harris.dev feels there's more to performance than updating the screen at 60 fps. We'll learn about new approaches that help you build fast, reliable, data-efficient apps. perfnow.nl/speakers.htm...

A car just went by that said "Transforming Future Coolness". It sounds great, but I don't know what the product would be. Or is it an experience?

performance.now() is coming! @marcysutton.com explains how designing for accessibility contributes to better experiences, and why subtle choices — like which elements receive focus — lead to better products. She’ll also talk about the legal context in Europe. perfnow.nl/speakers.htm...

performance.now() is coming! @ethangardner.com will offer practical tips on presenting engineering data as a competitive advantage, a revenue driver, and a tool for enhancing user experience to help make performance optimization a strategic priority. perfnow.nl/speakers.htm...

performance.now() is coming! @webx.bsky.social [] will explain how he built a Performance AI assistant and agentic workflow on top of a fork of Chrome DevTools. Few AI systems can reason with the complex reality of performance data. Learn how to solve that. perfnow.nl/speakers.htm...