Web Performance Consultant
Hi Simon! I was wondering if you could help with...
Core Web Vitals are your friend, not your foe
Not just that Google thing
Controlled tests of a single page / interaction
Real data from real users on the web
Google only cares about field metrics 🌍!
Don't expect massive ranking boosts
If max ranking boost == 1, this page will get ~0.7
And they're collected from users around the world for free!
One load event per session, one FCP, one LCP...
This breaks page-level attribution 😱
SPA websites are penalised by
ignoring mid-session navigations
except CLS - where the worst 1-5s window is captured
<img src="">in HTML source
loadingattribute is not
Remember that CLS attribution is broken in Search Console