performance.now()

the web performance conference 30-31 October 2025, Amsterdam we're down to our last tickets

Schedule

Here is the conference schedule, including side events.

The conference starts at 09:30 (doors open 08:30) and ends at 18:00, at which time we'll have drinks at the venue.

Get your tickets

Wednesday 29th

From 13:00 to 15:00 the W3C RUM Community Group will meet at the Google offices in Amsterdam for the first Real User Meetup.

From 19:00 to midnight the official performance.sync() pre-conference meetup will take place in Desmet (same venue as last year), kindly sponsored by Mozilla.

The conference

Time Thursday 30th of October Friday 31st of October
08:30Doors open, registration, light refreshments
09:30Welcome words by our MCs, Tim & Phil
09:40Tammy Everts How Fast is Fast Enough? Tim Kadlec Introduction to day 2
10:00Harry Roberts How to Think like a Performance Engineer Andy Davies LoAF
10:50Break
11:30Marcy Sutton Todd Accessibility and PerformanceMichal Mocny Measuring Interactions and Navigations
12:20Michael Hladky Big Data, Zero JS: Cross-Browser Virtual scrollingNadia Makarevich React, Rendering, Performance
13:10Lunch
14:40Ines Akrap Fast, green, responsibleBarry Pollard Speculations about Web Performance
15:30Umar Hansa Modern Performance WorkflowsVinicius Dallacqua DevTools, AI, Insights
16:20Break
17:10Ethan Gardner Making Performance AlliesRich Harris Fine-grained everything
18:00Closing remarks
18:05Drinks, a bite & mingling Sponsored by SpeedCurveDrinks, a bite & mingling Sponsored by Cloudflare

Performance Help Desk

During the breaks you can get answers to your web performance questions at the Performance Help Desk, sponsored by Google. The help desk will be staffed throughout the conference by members of Google's performance team and other experts from the performance community.