performance.now()

the web performance conference 30-31 October 2025, Amsterdam

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

On Wednesday 29th we have a RUM Community Group meeting and the official performance.sync() pre-conference meetup.

Afternoon: Real User Meetup at Google Amsterdam

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.

A great opportunity to have a real life meeting with (potential) members of the W3C RUM Group, to talk about real user monitoring, frontend observability and web performance measuring over lunch at Google Amsterdam HQ!

Access is free but registration is required.

Evening: performance.sync() at Desmet

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.

Enjoy drinks and light snacks in a relaxed atmosphere where you can connect with fellow attendees and speakers. We’ll be putting on a series of short talks from community members. Whether you’re here to learn or share, this is a great opportunity to meet others passionate about web performance.

Here, too, access is free but registration is required.

This event is looking for speakers! Please use this form to propose a session. These sessions will be recorded and published on our YouTube channel.

Thursday 30th and Friday 31st

The conference! It will run from 09:30 to 18:00 in the Zuiderkerk; doors open at 08:30. We'll also have drinks here.

We will publish the exact conference schedule later, but the times will closely resemble the 2024 schedule.

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.

Accessible only to ticket holders.

Saturday 1st

As yet we have nothing arranged on Saturday 1st, while we know a few attendees would like to hang out with their peers while waiting for their flight to leave. We'll get back to this — I hope.