The page experience update: the real 2021-2022 rollout timeline

“Page experience” reads like a single Google algorithm update in most SEO recaps, but Google’s own posts describe something slower and more staged: a preview, a delay, two separate rollouts a year apart, and a documentation page that quietly narrowed what the system covers. The dates below come from Google’s own Search Central posts and the “Updates” notes it appended to them afterward, not from third-party recaps.

The mobile rollout: preview, delay, completion#

Google first previewed the change on 28 May 2020, in a post that explicitly separated announcement from action: “the ranking changes described in this post will not happen before next year,” with at least six months’ notice promised before any launch. That November, a follow-up post set the date: page experience signals would roll into ranking in May 2021, combining the three original Core Web Vitals metrics (LCP, FID, and CLS) with existing signals for mobile-friendliness, HTTPS security, and the avoidance of intrusive interstitials.

The May 2021 date did not hold. A post published 19 April 2021 announced a gradual rollout “starting in mid-June this year” instead, adding that “page experience won’t play its full role as part of those systems until the end of August.” Google described the staged approach as adding a flavor gradually rather than all at once, so it could watch for unintended effects as the rollout reached more sites. Google later appended an update to that same post, dated 15 June 2021, saying the rollout was live globally and “will be complete by the end of August 2021” - the same window the April post had originally projected.

Desktop, on a separate calendar a year later#

Desktop page experience ranking was not part of the original 2021 rollout at all. Google announced its own timeline for desktop on 4 November 2021, stating rollout would “begin in February 2022” and be “complete by the end of March 2022,” using the same signal set that had already shipped on mobile - with mobile-friendliness dropped, since it does not apply to a desktop URL. A 22 February 2022 update confirmed the desktop rollout had started on schedule and reiterated the end-of-March completion date.

One correction landed in between the two rollouts. Google appended an update to its original posts on 4 August 2021 clarifying that Safe Browsing “isn’t used as a ranking signal,” despite Safe Browsing status appearing in Search Console under its own section outside the Page Experience report. This was a correction of a misreading, not a change to what the system actually did.

What is current in 2026 versus what Google announced in 2021#

Two things have measurably changed since the original rollout, both documented by Google itself rather than inferred.

First, the metric set changed on schedule with Google’s own stated plan to revise it “on a yearly basis”: First Input Delay (FID), one of the three original Core Web Vitals, was replaced by Interaction to Next Paint (INP) on 12 March 2024, per update notes Google added to both the 2020 and 2021 posts.

Second, and more consequential for how sites should prioritize page experience work: Google’s current documentation, last updated 10 December 2025, narrows what the system does in ranking terms. The original 2021 posts presented HTTPS security, mobile-friendliness, and the absence of intrusive interstitials as page experience ranking components on equal footing with Core Web Vitals, complete with a signal-by-signal comparison table for mobile versus desktop. The current documentation instead states plainly: “Beyond Core Web Vitals, other page experience aspects don’t directly help your website rank higher in search results.” Those other aspects, including HTTPS, mobile-friendliness, intrusive interstitials, excessive ads, and content distinction, remain listed as a self-assessment checklist, but Google now frames them as contributing to user satisfaction rather than functioning as ranking inputs on their own.

Why we care#

The rollout dates matter less in 2026 than the documentation shift does. A site auditing page experience today that still treats HTTPS, mobile-friendliness, and interstitial avoidance as independent ranking levers, the way the original 2021 posts described them, is optimizing against a framing Google itself has since narrowed. Core Web Vitals is the one component Google’s current documentation says “directly” affects ranking; the rest are baseline hygiene that keep a page eligible to compete, not separate scoring inputs. Treat the checklist as diagnostic, not as a set of ranking factors to chase individually - and treat any recap, including this one, as worth checking against Google’s dated posts directly rather than the secondhand summary that usually survives.