Reminder: tickets get more expensive onThursday. There are only nine tickets in the middle bracket left. perfnow.nl/tickets.html
performance.now() conference
@perfnow.nl
A single track conference with fourteen world-class sessions covering today’s most important web performance insights. #perfnow https://perfnow.nl 19th and 20th of November, Amsterdam Curated by Tim Kadlec, Tammy Everts, Harry Roberts, and PPK
Oh dear, speakers are being announced in carload lots! Today we add bsky.app/profile/clif... about Core Mobile Vitals bsky.app/profile/jpam... as our second MC bsky.app/profile/mach... about selling web performance Come join them at perfnow.nl
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the web performance community will gather at performance.now() in Amsterdam to discuss today’s most important web performance insights.
perfnow.nl
Three new speakers were announced for perfnow.nl ! Aleth Gueguen about native web and PWAs. @adactio.com about long-term performance: not milliseconds but decades Risko Ruus about regression testing and other QA Tickets: perfnow.nl/tickets.html See you in November in Amsterdam!
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
Reminder: ticket prices will go up by €100 + VAT this Wednesday, 1st of July. There are a few cheap tickets left. We also announced @patmeenan.com, @stephaniewalter.bsky.social and @programmingart.bsky.social (MC). perfnow.nl/tickets.html
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
Remember: ticket prices will go up by €100 + VAT next Wednesday, 1st of July. Grab your cheap tickets while you can. perfnow.nl/tickets.html
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
My presentation, Making Performance Allies from @perfnow.nl just got posted to YouTube - www.youtube.com/watch?v=ygdx.... The tips I share in the presentation were designed to make #webperf stick beyond the occasional task that finds its way out of the backlog. Enjoy!
Making Performance Allies - Ethan Gardner - performance.now() 2025
YouTube video by Web Conferences Amsterdam
youtube.com
My talk from @perfnow.nl is out! It was a super special time compiling years of information on Accessibility and Performance into one talk. Even cooler that my little family could be there in Amsterdam to see it. 💗 youtu.be/Fdvk_qOKjVM?... #a11y
Accessibility and Performance - Marcy Sutton Todd - performance.now() 2025
YouTube video by Web Conferences Amsterdam
youtu.be
Six early-bird tickets left. Will they run out today? Or are you feeling lucky and wait for Monday? perfnow.nl/tickets.html
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
Ticket acquired. Can’t wait to see you all later this year! Go get yours!
performance.now() conference@perfnow.nl · 4mo agoTicket sales are open! perfnow.nl/tickets.html
Ticket sales are open! perfnow.nl/tickets.html
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
We just sent out a TEST MAIL to our mailing list. Last year quite a few people didn't see the announcement mail and missed the early bird ticket sale. So this year we run a test first. If you're subscribed to our mailing list, please make sure you got the test mail. Or perfnow.nl/subscribe
performance.now() 2026 is coming. Ticket sales will open in May with cheap and ultra-cheap early bird tickets. These will be announced in our newsletter first. So subscribe via perfnow.nl/subscribe perfnow.nl
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
performance.now() 2026 is coming. Ticket sales will open in May with cheap and ultra-cheap early bird tickets. These will be announced in our newsletter first. So subscribe via perfnow.nl/subscribe perfnow.nl
performance.now(); 19th and 20th of November 2026, Amsterdam
On 19th and 20th of November 2026, the seventh edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
perfnow.nl
Conference organising in 2026 quirksmode.org/quirksblog/a...
Conference organising in 2026
Conference organisers have tough job because tickets are more difficult to sell these days. And a good conference circuit is typically something that you start to miss only when it's too late. Here a...
quirksmode.org
2025 conference photos are up perfnow.nl/2025/pix/pho... (though I need to consult a speculation rules expert at some point)
performance.now() 2025 photos
perfnow.nl
And the performance.sync() videos, the Wednesday pre-party, are also live. www.youtube.com/@WebConferen...
Web Conferences Amsterdam
We curate and organise deep-diving, single-track, content-focused web conferences, in Amsterdam. Most sessions, about 45 minutes each, include a Q&A session with the speaker. We aim to cover technique...
youtube.com
A little aftermovie to whet your appetite. www.youtube.com/watch?v=ByOC...
This was performance.now() 2025
YouTube video by Web Conferences Amsterdam
youtube.com
Here you go! My first perf now as a speaker… it’s was amazing 🤩 docs.google.com/presentation...
PerfNow25 - Big Data, Zero JS: Cross-Browser Virtual scrolling
Big Data, Zero JS Cross-Browser Virtual Scrolling CONTAIN & CONTENT-VISIBILITY
docs.google.com
I shilled a javascript framework at a web perf conference and came out mostly unscathed, AMA
Joan León@nucliweb.net · 11mo ago"0 kB of JavaScript is not a feature" - @rich-harris.dev #perfnow #WebPerf
performance.now() 2026 will take place on 19th and 20th of November 2026. #perfnow.
Unsurprising revelation from #perfnow: @rich-harris.dev really is ruddy good at demonstrating interesting concepts. His @svelte.dev is demo is terribly compelling.
#perfnow absolutely fantastic and compelling demos from @rich-harris.dev but I'm trying to resist concerns on his preference for tabs over spaces...😂
@perfnow.nl for whoever asked that question about Sec-Purpose it DOES get set on sub-resources for prerendered speculations. Not just the document. #perfnow
It’s an honor to see my company #speedkit mentioned on stage at #perfnow by a web performance VIP and ambassador such as Barry @tunetheweb.com Pollard. 😊 Congrats to the Speed Kit team who implemented speculation rules in such an effective way in our product!
Making Sense of Long Animation Frames… The slides from my #PerfNow talk are available on Notist noti.st/andydavies/9...
Making Sense of LoAF by Andy Davies
Over time the web has become more reliant on JavaScript… but we’ve very little information on how its growth is affecting our visitors’ experience.
noti.st
