Cyd Stumpel

Started working on my demo for Fronteers Dark Mode, this is built with CSS scroll-driven animations, no JS 💅 My talk will go into detail on where you can replace JS with CSS! Tickets are still available: fronteersconf.org This cool effect is inspired by @thomasaufresne.com → bennettandclive.com

Even my non-techy friends were starting to ask me if I was doing okay after the whole php thing 😂

WIP page transitions for my 2027 portfolio

4 weeks left to get your ticket - I know you've not done it yet. Don't leave it and miss out. Who is this for? Devs, designers, product people, newbies and oldies. It's a single track day designed to reignite our connection to what we do. 2026.ffconf.org

Building CSS Scroll-Triggered Animations (or thinking of building some) that use `animation-trigger` and `timeline-trigger`? Here’s the debugging tool you are looking for: brm.us/sta-debugger

LinkedIn recruiters obviously aren’t used to Dutch bluntness💅

Just in time for me! cydstumpel.nl/my-picks-for...

Honestly, if you're going to prompt, go for it, but those little details are the important bit. I'm making these to show what's possible, and the things that improve your sites/apps. More and more sites are looking the same these days, to the point where I'm reminiscent of the Bootstrap days

A little summary of my experience at Fronteers Dark Mode, a breakdown of the header effect of my demo, and a tiny bit of yapping at the end on existential dread in the age of AI 💁🏻‍♀️ @fronteers.bsky.social cydstumpel.nl/demo-deep-di...

After 7.5 months of tweaking, reviewing, and rewriting, the docs for Scroll-Triggered Animations have landed on @developer.mozilla.org (MDN)! → developer.mozilla.org/en-US/docs/W... Congrats and thanks to Chris Mills and @estelle.bsky.social for their hard work and sweating the details on this!

Next up, @cydstumpel.nl on scroll driven animations, view transitions and a quick glimpse to scroll triggered animations. #fronteers #darkmode

Just did a 90% run through of my Fronteers Dark Mode presentation and it's already 55 minutes long 🥹. Should I: A) remove some of the demo animations or B) bribe the conference ?

Just helping with editing here. These bots aren’t sentient. They’re doing what they’re programmed to do. OpenAI, a private company supposedly bound by laws, committed federal crimes.

Fronteers Dark Mode conference is next week! Monday I'll send badges to the printer... which means if you want a proper badge... sign up now! We've got a handful of tickets left and they are only €100 for an evening of front-end talks by some amazing speakers. www.fronteersconf.org

put // comments in CSS in interop 2027 u cowards

I’m so done with tech CEOs sharing their beliefs, I now need to find a different code editor, password manager and probably a new bookkeeping system.

don't be nice.

Two weeks from now Fronteers Dark Mode will happen in Dordrecht in The Netherlands. There are still a few tickets left. Be quick ⚠️ Join us for an afternoon and evening of great talks. With a spectacular line up: @anjana.dev, @tunetheweb.com, @cydstumpel.nl, @csswizardry.com and @heydonworks.com

Finally looked into CSS scroll triggered animations and wrote down what I learned! Special thanks to Bramus for answering some of my questions cydstumpel.nl/css-scroll-t...

I've started coding, and this is why I shouldn't design professionally, haha, I always change it in development

Are we still arguing over two- vs tri-state color mode toggles? Let's actually talk about the important stuff; like animating the shit out of the toggle! (only for those who don't prefer reduced motion of course)

Kids love books, right? RIGHT? I’m trying to become my best friend’s kids favorite honorary aunt by writing and illustrating a children’s book

Made a browser extension that randomly adds silly cross-document view transitions to all websites. Now it's time to create a collective repository of silly transitions for all of us to share.

It's Tuesday, so it's time for another featured talk from #JSHeroes 2026. This time we put the spotlight on @cydstumpel.nl's awesome talk titled "You might not need JS". Spoiler alert! it's true! www.youtube.com/watch?v=mtsc...

Turns out you can fit an entire snake game into a single <div> with CSS border-shape mkrl.xyz/border-snake/

NO, ADOBE, I DON'T NEED A FUCKING AI SUMMARY OF A CV. FUCK OFF. LITERALLY FUCK DIRECTLY OFF. I CANNOT KEEP SPENDING MY TIME DIP DODGING AROUND FORCED AI BOLLOCKS IN EVERY FUCKING APP I USE, EVERY DOCUMENT I READ, EVERY SITE I VISIT, EVERY APPLIANCE I TURN ON, FUCK OFF, FUCK OFF, FUUUUCKKK OFFFFFF

I might have gotten carried away with Figma animations for my portfolio explorations. 1/10 would not recommend

An extremely good and important read. henry.codes/writing/it-d...

wrote about the AB's Web Meetup on the W3C blog www.w3.org/blog/2026/cs... (with shoutouts to and pictures of @level-level.com @cydstumpel.nl @cyns.bsky.social @torgo.com!)

Having way too much fun and spending way too much time on the @gsap-greensock.bsky.social and @codetv.dev hackathon, hopefully I’ll be done tomorrow 😅

I didn't get to all the cool view transition stuff I added to the JS heroes conference demo I made for my talk, so here it is in one blog post! cydstumpel.nl/a-deep-dive-...

The joy I felt when I met someone who brought position sticky to browsers🫶 @tess.oconnor.cx

One of my students had to resit his assessment today and talk about what he learned during the minor. One of the things he said he learned was how open and approachable CSS folks are, during CSS day but also when he emailed @miriam.codes with a CSS question and was so delighted she responded! ❤️

Sketching out some data fishualisation 🐠stuff!!

Early bird tickets have been let out the door. Folks have already got theirs. Think of how much cooler the day is going to be on 13th November surrounded by YOUR people, and watching 8 amazing talks. It's an infectious day (in that good way!). Join us: 2026.ffconf.org

I can tell everyone now! I’m speaking at @ffconf.org in November 🥳, tickets go on sale next week! ✨

From the archives: Browser support for view transitions is rocketing and there's not many better out there to help you understand how to implement them than Cyd Stumpel. piccalil.li/blog/start-i...

I got to talk about my favorite projects, work philosophy and origin story for this developer spotlight, thanks Codrops💙

Another lanyard goes on the wall, #cssday was lots of fun! ✨

Krijn is live-blogging #cssday if you are at home and have FOMO krijnhoetmer.nl/log/2026/06/...

When @chriscoyier.net asks you to write an article, you say yes! 🙌 master.dev/blog/demysti...

Great talk by @cydstumpel.nl at the-web-you-want.org