What’s new in performance?

on YouTube ↗39m

" summary

Chrome now ships BFCache which makes back/forward navigations instantaneous and Chrome measures ~1 in 10 desktop and 1 in 5 mobile navigations as forward/back, so testing eligibility and removing unload handlers yields real LCP and CLS wins; fetchpriority and preload are distinct but combinable; Early Hints lets servers preconnect/preload during slow responses; responsiveness proposals include Interaction to Next Paint with thresholds IMP 200ms/500ms, the inputPending check and postTask priority scheduling, and tooling updates like WebPageTest experiments and web-vitals attribution.

AI-written summary · about

" chapters (6)

1. 0:00Start
2. 4:21Test your pages
3. 11:11Fetch priority & preload
4. 13:01Early Hints
5. 27:35Task priorities
6. 30:40Lighthouse User Flows

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