early-hints

Apr 08

Investigating… a High LCP for Wish.com

Aaron T. Grogg

The latest in a series of posts that investigate problematic performance KPIs on live commercial websites. Table of Contents Intro Exploring the Issue Improving the Issue Summary Resources Intro On a recent Speedcurve Page Speed Benchmarks dashboard, when viewing USA > Retail > ｿ LCP...

performance debugging early-hints cwv lcp investigating-series fetchpriority server-side-generation devtools

Mar 31

Early Hints vs. Resource Hints vs. Speculation Rules: Which is right for what, and when?

Aaron T. Grogg

Early Hints, Resource Hints (comprised of dns-prefetch, preconnect, preload and prefetch links), and Speculation Rules all perform similar tasks: they try to fetch things sooner than necessary, so the user doesn’t have to wait for them when they are actually needed. But how and when they go about...

performance resource-hints early-hints cwv speculation rules progressive enhancement