Google began rolling out the page experience update on 15th Jun 2021. It made Core Web Vitals (LCP, FID and CLS) ranking signals in mobile search.
They sit alongside HTTPS, mobile-friendliness and no intrusive interstitials.
Google had laid out the plan in an April 2021 post, "More time, tools, and details on the page experience update".
Launch coverage put the gradual rollout at mid-June through the end of August 2021.
Google always played down the impact. It said "sites generally should not expect drastic changes" because page experience is one of many ranking factors.
From 17th Jun 2021, the signals also began deciding which pages qualify for the Top Stories carousel.
On 2nd Sep 2021, Google confirmed the rollout had finished, slightly past its end-of-August target. It said: "The page experience rollout is complete now, including updates to Top Stories mobile carousel."
Desktop followed. On 4th Nov 2021, Google published "Timeline for bringing page experience ranking to desktop".
It committed to a February 2022 start and a finish by the end of March 2022. Every mobile signal carried over except mobile-friendliness.
The desktop rollout began on 22nd Feb 2022. It is logged at 9 days on Google's ranking updates history.
