I bought a turntable. Yes… I am that old.

2015 was the first year I attended Beyond Tellerrand and I can’t remember a single edition that was not absolutely and completely inspiring. So many fantastic talks and speakers over the years. Such an amazing community. You should become a friend of the conference. I have.

After an incredibly busy month of traveling I am finally on my way home. Last trip of the year, now time for rest and family. Malta was great! Thanks DevFest Malta for having me.

Oooh. This is incredibly useful. Just the other day I tried if inherit works in a calc() function - it obviously doesn’t. But now inherit() does!

🔥🔥🔥 Lowest setting. CSS powered flamethrower! Yes, it is really controlled by CSS. I can add MIDI inputs. Then use CSS to trigger animations and output the result to DMX for controlling the flamethrower.

Current status: working on side projects until the Cloudflare issue has been solved.

DevFest Warsaw is about to start. This is such a lovely space #devfest2025 #devfestwarsaw #googledevelopers

Current mood: youtu.be/Ra8gSw7Djvo?...

Arrived in Warsaw this evening for my penultimate conference of the year. Tomorrow DevFest Warsaw, then in a week and a half DevFest Malta. Tonight a quiet night. We’re halfway November and I have only slept 4 nights in my own bed. I’ll need a couple of months rest after this. #devfestwarsaw

Okay, one more. I just loooooove the reflection here. So good. Doesn’t look like shit at all. No siree, ship it!

Most relatable conference talk silde ever, courtesy of @html5test.com at #HalfStack

On my way to Heathrow after another fantastic edition of @halfstackconf.bsky.social. Happy with how my talk about Baseline went and then I did another unplanned 10 minute talk about one of my side projects that I literally wrote the night before, after the speaker dinner 😅

It’s alive and on stage! cc: @nerdy.dev

Just got home. First thing my 11-year old said to me: Dad, did you buy a flamethrower…? Eh. Yes. Yes, I did. 🔥

Almost home again after a couple of amazing days at @beyondtellerrand.com. Thank you so much @marcthiele.com! It was so lovely seeing everybody again. After spending a couple hours at home I am off again to London for @halfstackconf.bsky.social and then straight to Warsaw for DevFest.

@nerdy.dev This is happening. MIDI → CSS → DMX → 🔥

#js developers 📣! There's still time to sign up for @halfstackconf.bsky.social London on Wed 12th November. There's some great talks on the list, including myself talking about #vectorsearch. Here's my 10% off code if you still haven't got your 🎫 (😱): ti.to/halfstack/ha... See you there! 👋

Looking for some random thing on AliExpress when suddenly… Hey! I could use a flame thrower! It would be fun to connect it to the web and…

I guess Deutsche Bahn is going to Deutsche Bahn. Good decision to travel the day before. I will be late, but I’ll get to Berlin. Lessons learned from last year visiting @beyondtellerrand.com where I missed the first two talks and got stranded in the middle of the night on my way back home.

And from London to Warsaw where I will join DevFest Warsaw and give a talk about Project Fugu. I will show how my company build a completely browser based cash register application that is using WebUSB, WebHID, WebSerial for talking to point of sale devices. 🎟️ sites.google.com/view/devfest...

And from Berlin straight to London for HalfStack where I will be giving a new talk about Baseline. I'll be talking about the issues that web developers have keeping up with the ever expanding web platform and how to deal with browser compatibility and interoperability. 🎟️ halfstackconf.com/london

Going to be a busy two weeks! Traveling to Berlin tomorrow for Beyond Tellerrand @beyondtellerrand.com. I've been looking forward to this for at least since the Dusseldorf edition this spring. Can't wait! I see there are still tickets available, so join us! 🎟️ beyondtellerrand.com/events/berli...

𝟏𝟐 𝐝𝐚𝐲𝐬 𝐥𝐞𝐟𝐭 𝐮𝐧𝐭𝐢𝐥 𝟏𝟐 𝐍𝐨𝐯𝐞𝐦𝐛𝐞𝐫ⵑ Be part of the final HalfStack London, a full day of creative web explorations, live demos, music, quizzes, and karaoke! 🎉 📅 12 Nov 2025 | 93 Feet East, Shoreditch 👉 halfstackconf.com/london #HalfStack #HalfStackLondon

If you find yourself wondering if you really need four oscilloscopes... then it is already too late and you might as well buy that fifth one. Okay, two of them are in working condition. Barely. One is at the repair shop for a blown capacitor. One worked for 5 minutes. So yes. I do need one more.

🔥 Hot off the press 🔥 You can you can finally style anchored elements based on their fallback position in CSS! Meet the CSS anchored container query 🤝 container-type: anchored @‎container anchored(fallback: <fallback-name>) (landing in Chrome 143) developer.chrome.com/blog/anchore...

Only two more weeks until it is time for HalfStack London. Attending HalfStack is always a treat with great talks, fun people and good pizza. I'll be speaking again this year about Baseline and how we can make informed choices about browser support in 2025. 🎟️ halfstackconf.com/london

𝐇𝐚𝐥𝐟𝐒𝐭𝐚𝐜𝐤 𝐋𝐨𝐧𝐝𝐨𝐧: The fun, creative side of web development. 🎉 📅 12 Nov 2025 | 93 Feet East, Shoreditch 🎟️ halfstackconf.com/london #HalfStack #HalfStackLondon

Welcome to a new week. I‘ll send the badges to the printer today. If you want your name to be printed, get your ticket for #btconf Berlin until noon. beyondtellerrand.com/events/berli...

I can’t believe how much work I can do while procrastinating. It’s not the work I was supposed to do but this weekend has been so much fun. And that talk I haven’t written yet… and have to present in two weeks time… that is going to be fine. I can do that later. Yeah.

Another new experiment: a clock. A great clock because it doesn't care how you hold it. It levels itself. A bad clock, because it breaks easily. Shake it and the hands will drop down by gravity. The best part... you can set the time by just moving the hands and give them a little sweep.

New scope! Well… it’s an old scope and it is in pretty terrible state. But at least it is working. Hasn’t blown a capacitor yet. And look! SVG paths! The principles are actually really simple. I’ll do a write up at a later moment.

And the oscilloscope just went up in smoke 💨 A crackling sound. A huge puff of white smoke. Scrambling to find the power cable and just caught the last bit on camera. One might think we have a new pope.

I bought an old, second hand oscilloscope and made something cool. I’m using WebAudio to send separate signals to the left and right channel. Feed those into the BNC inputs of the oscilloscope. Plot it on the X and Y axis. And you can make arbitrary line drawings.

Apple has relented. The latest iOS 26 Beta includes a toggle for "Liquid Glass," its magical new design language that puts fashion ahead of function at every turn. Soon users will be able to disable most of that accessibility nightmare with a frosted glass alternative that's far less terrible.

@html5test.com is back at HalfStack London! ✨ With Baseline 2025, Niels will explore which web features are safe to use today and how to stay modern without breaking browser support. 💻 📅 12 Nov 2025 — 93 Feet East, Shoreditch 🎟️ halfstackconf.com/london #HalfStack #HalfStackLondon #WebDevelopment

Claude just suggested this to prevent XSS: $name = strip_tags($firstname) . ' ' . strip_tags($lastname); This is going to be a rough couple of years.

It was my intention to not give any talks this fall… but somehow I failed miserably. Last week I had zero talks planned. Now it looks like it is going to be FOUR in November alone. Oh, and I promised to write a completely new talk 😅

It's also easy to debug using @developer.chrome.com It shows you which fallback position is used by crossing out all the others. When all of them are crossed out, the position defined on the element is the one used.

I am afraid this is turning into an addiction. I just bought tickets for a flight to Tromsø for another Northern Lights trip expedition… 😬

I was reading through the CSS Anchored Position spec and I just could not figure out how to make a tooltip that points towards the anchor. To me that was kind of an obvious requirement as this is a really common pattern for tooltips. This is what I ended up with: codepen.io/NielsLeenhee...

Playing around with CSS Anchor Positioning in Safari 26... And it is not going well..

For organising Fronteers Darkmode we had a tiny budget. In fact no budget at all for AV. But thanks to an ATEM Mini Pro and a very long USB-C cable we managed to make it look like a high-budget conference instead of a meetup. nielsleenheer.com/articles/202...

“Terrible things are happening outside. Poor helpless people are being dragged out of their homes. Families are torn apart. Men, women, and children are separated. Children come home from school to find that their parents have disappeared.” Diary of Anne Frank January 13, 1943

Hahaha. All conference speakers need this.

Not much hope for Liquid Glass improvements in iOS 26.1…

From what I heard there are only a very limited number of tickets left. Ticket sales will close at midnight. So last chance for a great evening at Fronteers Dark Mode! And it is only €49 for Fronteers members and €99 for regular tickets, which is a steal.

🎨 Speaker spotlight: Rune Devuyst – The Dark Side of Bright Colours Colour isn’t just a visual choice — it shapes accessibility and device energy use. Rune explores how your palette impacts OLED screens, contrast, and even sustainability. ⚡ 🎟️ Tickets & info: fronteersconf.org

🌱 Thorsten Jonas – Beyond User-Centricity Great UX shouldn't come at the planet’s expense. Thorsten shows how to design sustainable, responsible digital products—by default. 🗓 Fronteers Dark Mode · Oct 3 · Dordrecht 🎟️ fronteersconf.org

🎸 Dylan Beattie brings Rockstar 2.0 to Fronteers Dark Mode! A joke language based on Bon Jovi — powered by real tech like .NET, JS & WASM. Expect laughs, insights & maybe a Rockstar cert. 🤘 🗓 Oct 3 · Dordrecht 🎟️ fronteersconf.org

My main takeaway so far from this @inclusivedesign24.bsky.social talk about BBC app design is that Apple's liquid glass is absolute dogshit when it comes to accessibility 😬