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User experience is still queen here!
1. When can I see the page?
2. When can I interact with it?
3. Is it smooth?15:21 PM - 27 Nov 2019
1. When can I see the page?
Speed index is a great measure of when the page is visually populated. A newer metric, Largest Contentful Paint is on the rise and will soon have a larger weight in Lighthouse scores. web.dev/lcp/15:21 PM - 27 Nov 2019
2. When can I interact with it?
Time to interactive (TTI) & total blocking time (TBT) seek to quantify this. TBT is a newer metric that will soon have a larger weight in Lighthouse also. What makes both worse? Large blocks of scripting on the main thread. web.dev/tbt/15:21 PM - 27 Nov 2019
3. Is it smooth?
When I interact with a page, is it smooth to scroll and interact, and does it respond to me quickly? Sadly, no easy push-button metric exists for this. Learning Dev Tools profiling is your best bet and then measuring discreet interactions to debug.15:21 PM - 27 Nov 2019
.@umaar has a great course on Modern Dev Tools, and you can preview a free lesson on profiling a performance issue here moderndevtools.com/lessons/1115:21 PM - 27 Nov 2019
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