How do you measure rendering performance for entire DOM subtrees without slowing down the browser? ⏱️

✍ In my new blog post, I dive into the technical details of how I implemented the new Container Timing #webperf API in #Blink / #Chromium.

https://blogs.igalia.com/dape/2026/03/26/the-implementation-of-container-timing-aggregating-paints-in-blink/

Instead of reinventing the wheel, we reuse existing Paint detection and "bubble up" events to a container root, efficiently aggregating them.

Read more about the architecture and how to test it today! ✍

cc @igalia @developers