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
https://perfnow.nl
19th and 20th of November, Amsterdam
Curated by Tim Kadlec, Tammy Everts, Harry Roberts, and PPK
Pinned
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
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!
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!
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!
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
September 1, 2026 at 9:27 AM
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!
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!
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
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
June 29, 2026 at 8:25 AM
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
We also announced @patmeenan.com, @stephaniewalter.bsky.social and @programmingart.bsky.social (MC).
perfnow.nl/tickets.html
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
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
June 25, 2026 at 11:57 AM
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
perfnow.nl/tickets.html
Reposted by performance.now() conference
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!
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
www.youtube.com
June 17, 2026 at 11:51 PM
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!
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!
Reposted by performance.now() conference
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
June 12, 2026 at 5:01 PM
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
Six early-bird tickets left. Will they run out today? Or are you feeling lucky and wait for Monday?
perfnow.nl/tickets.html
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
May 22, 2026 at 11:03 AM
Six early-bird tickets left. Will they run out today? Or are you feeling lucky and wait for Monday?
perfnow.nl/tickets.html
perfnow.nl/tickets.html
Reposted by performance.now() conference
Ticket acquired. Can’t wait to see you all later this year! Go get yours!
May 22, 2026 at 4:40 AM
Ticket acquired. Can’t wait to see you all later this year! Go get yours!
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
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
May 11, 2026 at 12:06 PM
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
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
Reposted by performance.now() conference
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
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
April 23, 2026 at 1:14 PM
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
These will be announced in our newsletter first. So subscribe via perfnow.nl/subscribe
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
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
April 23, 2026 at 1:14 PM
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
These will be announced in our newsletter first. So subscribe via perfnow.nl/subscribe
perfnow.nl
Reposted by performance.now() conference
2025 conference photos are up
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
performance.now() 2025 photos
perfnow.nl
November 5, 2025 at 11:24 AM
2025 conference photos are up
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
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...
www.youtube.com
November 5, 2025 at 10:59 AM
And the performance.sync() videos, the Wednesday pre-party, are also live. www.youtube.com/@WebConferen...
This was performance.now() 2025
YouTube video by Web Conferences Amsterdam
www.youtube.com
November 4, 2025 at 11:51 AM
Reposted by performance.now() conference
Reposted by performance.now() conference
I shilled a javascript framework at a web perf conference and came out mostly unscathed, AMA
November 1, 2025 at 8:45 AM
I shilled a javascript framework at a web perf conference and came out mostly unscathed, AMA
performance.now() 2026 will take place on 19th and 20th of November 2026. #perfnow.
November 1, 2025 at 8:21 AM
performance.now() 2026 will take place on 19th and 20th of November 2026. #perfnow.
Reposted by performance.now() conference
Unsurprising revelation from #perfnow:
@rich-harris.dev really is ruddy good at demonstrating interesting concepts.
His @svelte.dev is demo is terribly compelling.
@rich-harris.dev really is ruddy good at demonstrating interesting concepts.
His @svelte.dev is demo is terribly compelling.
October 31, 2025 at 4:44 PM
Unsurprising revelation from #perfnow:
@rich-harris.dev really is ruddy good at demonstrating interesting concepts.
His @svelte.dev is demo is terribly compelling.
@rich-harris.dev really is ruddy good at demonstrating interesting concepts.
His @svelte.dev is demo is terribly compelling.
Reposted by performance.now() conference
October 31, 2025 at 4:43 PM
Reposted by performance.now() conference
@rich-harris.dev might have the best demo app I have ever seen 😁 at #perfNow
October 31, 2025 at 4:41 PM
@rich-harris.dev might have the best demo app I have ever seen 😁 at #perfNow
Reposted by performance.now() conference
October 31, 2025 at 4:32 PM
Reposted by performance.now() conference
#perfnow absolutely fantastic and compelling demos from @rich-harris.dev but I'm trying to resist concerns on his preference for tabs over spaces...😂
October 31, 2025 at 4:47 PM
#perfnow absolutely fantastic and compelling demos from @rich-harris.dev but I'm trying to resist concerns on his preference for tabs over spaces...😂
Reposted by performance.now() conference
@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
October 31, 2025 at 3:16 PM
@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