Designing a New Web Engine — What Would You Do Differently?

Happenings

W3C's Xiaoqian Wu holds a breakout session on what it takes to build a new browser engine.

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Event details

Date:
– Central European Summer Time
– UTC
Location:
A Coruña, Spain (hybrid event, register for free)
Speakers:
Xiaoqian Wu, W3C
Host:
Igalia
Website:
Web Engines Hackfest 2025

As more teams — both large and small — begin exploring what it takes to build a new browser engine, we thought it would be nice to create a space where developers can share their “what if” ideas. For example:

  • What parts of the platform do you wish had been designed in a more structured way, especially in web standards?
  • Are there events or other APIs you think should never have been added?
  • If you could start from scratch, which features would you prioritize, remove, or completely redesign?
  • What capabilities do you wish existed to better serve end users?

We’d love to hear your perspectives and any lessons learned. Come join the session and share your thoughts!