Better than loading fast… is loading instantly
summary
Chrome aims for truly instant loads by combining existing and new browser features rather than more JavaScript: reuse pages with the back/forward cache (BFCache) which restores pages instantly and already covers roughly 1 in 10 desktop and 1 in 5 mobile navigations; avoid unload handlers and Cache-Control: no-store which block BFCache; warm future views with prefetch and the revived pre-render via the speculation rules API (origin trial, demos on web.dev, pre-render caps ~10 pages); goal is LCP well below the LCP 2.5s threshold.
AI-written summary · about
chapters (11)
- 0:00Introduction and setup
- 1:47Core Web Vitals and LCP
- 3:54Limitations of SPAs and slow loading
- 6:22Back-forward cache benefits
- 9:17Testing and enabling BF cache
- 13:10Prefetching future page views
- 15:59Pre-rendering with speculation rules
- 19:30Demo of speculation rules
- 21:39Fixing first page load with predictors
- 24:29View transitions and instant UX
- 27:41Summary and Q&A
