At Fosdem 2025 I had the opportunity to arrange the Web Performance developer room together with Dave, Julien and Nazim from Mozilla.

FOSDEM is a completely free and open conference held annually in Brussels, Belgium, dedicated to promoting free and open-source software and knowledge sharing. One thing I particularly like about FOSDEM is that all speakers volunteer their time and expertise, making it truly community-driven. All sessions were recorded, so I'm excited to share the videos here for those who couldn't attend.

Our developer room was fully packed during several sessions, it was great to see that people still care about web performance.

Here are the talks from our Web Performance room this year:

• How browsers REALLY load Web pages - Robin Marx (video)
• Making Sense of the Long Animation Frames (LoAF) API - Andy Davies (video)
• Scheduling HTTP streams - Alexander Krizhanovsky (video)
• Chromium on Android: How we doubled Speedometer & developed the LoadLine benchmark - Eric Seckler, Gurj Bahia (video)
• Collaborate using the Firefox Profiler - Nazım Can Altınova (video)

Enjoy watching the talks!