performance.now() 2026

A single track web performance conference covering JavaScript and CSS performance, popular frameworks, performance culture, performance budgets, perceived performance, performance monitoring, and the post-Core-Web-Vital world.

The event takes place at the Oosterkerk venue and offers a single-track program covering performance monitoring, performance budgets, and perceived performance. Speakers share practical, actionable insights on measuring and improving performance in production. A live stream option is planned alongside in-person attendance.