Just a few months ago, we covered how to prepare for the 2021 Core Web Vitals update.<\/p>\n\n\n\n
The update is already here. It was released back in June 2021. Unlike the rest, its rollout is expected to span across a few months, so it\u2019s too early to assess the full aftermath.<\/p>\n\n\n\n
Yet, as we pass the first half of the update, which is supposed to fully launch in August, we decided to take a look at some preliminary trends.<\/p>\n\n\n\n
The Core Web Vitals (CWV) are a part of Google\u2019s Page Experience Update , which puts a great deal of emphasis on user-friendliness signals that determine pages\u2019 rankings.<\/p>\n\n\n\n
Largest Contentful Paint (LCP) measures the render time of the largest image or text block visible within the viewport relative to when the page first started loading.<\/p>\n\n\n\n
First Input Delay (FID) measures interactivity (how quickly users can interact with the elements on a page).<\/p>\n\n\n\n
The Summer of 2021 was pretty rich for updates. So it\u2019s important to remember that on top of the extended Page Experience update, we also saw two broad core algo updates in June and July , as well as an Anti-Spam Update.<\/p>\n\n\n\n
Although SERPs could have been influenced by factors other than the Page Experience Update, we wanted to assess the initial impact of the arrival of Core Web Vitals, so we used the following methodology:<\/p>\n\n\n\n
We took over 2,500 random keywords from Alien Road Sensor \u2019s US database to collect the top 10 results from SERPs on both desktop and mobile web.<\/p>\n\n\n\n
We collected these SERPs for the following dates: Jun 8, 2021(before the start of the rollout), Jun 21, 2021(straight after the rollout), and July 15, 2021 (roughly one month into the rollout).<\/p>\n\n\n\n
We measured the Core Web Vitals metrics* for all the URLs that made it into the top 10 search results, comparing the values for the three dates.<\/p>\n\n\n\n
To explore some potential mobile SERP shifts, we analyzed over 18,000 URLs in June before the update and after the update, as well as in July. To assess the state of desktop SERPs, we analyzed over 19,000 URLs for the same timeframes.<\/p>\n\n\n\n
This post reveals what differences we managed to pinpoint thanks to the analysis of all the retrieved data. For this study, we used both lab and field data, with the latter having a ranking impact.<\/p>\n\n\n\n
Before we deep dive into the findings, we have to underline the key differentiating points between field and lab data:<\/p>\n\n\n\n
Field data is based on stats coming from real users, who each use a unique device and network connection to visit the page.<\/p>\n\n\n\n
Lab data is collected using a controlled environment, where device and network connection settings are predefined. Lab data emulates a Moto G4 mobile phone with a high-speed 3G connection.<\/p>\n\n\n\n
*Please note that we measured Total Blocking Time (TBT) instead of First Input Delay (FID) for lab data analysis. FID requires data from real users and hence cannot be measured in the lab. However, per Google, the lab-measurable TBT metric correlates with FID in the field, reflecting interactivity-related issues.<\/p>\n\n\n\n
We spotted no dramatic difference between the post-update data for June and July. Field data** confirms that the overall situation didn\u2019t change much. However, there are some smaller details we observed in the lab stats.<\/p>\n\n\n\n
According to lab data, the overall share of URLs that come with all metrics marked as \u2018Good\u2019 increased for both mobile and desktop.<\/p>\n\n\n\n
**It takes up to 28 days for field data to renew its stats, so stay tuned for the next edition of our study to see if field data returns different numbers.<\/p>\n\n\n\n
Field data indicates very minor changes to all three metrics we measured before, after, and one month into the update.<\/p>\n\n\n\n
The majority of URLs have \u2018Good\u2019 values for FID and CLS metrics. With LCP, we see as many pages within the \u2018To improve\u2019 range as within the \u2018Good\u2019 range.<\/p>\n\n\n\n
Since the start of the update, the number of pages that were within the \u2018Good\u2019 LCP range kept increasing, while those marked as \u2018Poor\u2019 had a fading presence across mobile SERPs. But the spotted changes were by a small 3% margin, not a statistically significant number, so this does not allow us to come to any grand conclusions.<\/p>\n\n\n\n
With TBT, the majority of URLs have \u2018Poor\u2019 TBT even after an update. But we can see that the share of \u2018Poor\u2019 pages decreased by 10% straight after the update, and then the numbers came back to pre-update levels in July. We see a similar \u2018bounce back\u2019 trend for URLs that have \u2018Good\u2019 TBT values. So far, this is merely an observation as it\u2019s not yet possible to pinpoint any potential cause (if any).<\/p>\n\n\n\n
Pre-update, the majority of URLs come with a \u2018Good\u2019 CLS score, with a seemingly sustainable upward improvement trend in all three data sets.<\/p>\n\n\n\n
While we did analyze the top-ranking URLs for how they stand in regard to CWV, this does not imply that they rank high thanks to good CWV values.<\/p>\n\n\n\n
So the good old \u2018correlation doesn\u2019t mean causation\u2019 logic applies to our analysis of the state of SERPs from a CWV perspective.<\/p>\n\n\n\n
We took a look at URLs with \u2018Good\u2019 values for all three metrics and assessed which SERP positions they tend to take.<\/p>\n\n\n\n
As filed data points out, before the update, the relationship between \u2018Good\u2019 values and positions was very straightforward \u2013 the fewer the share of pages with all \u2018Good\u2019 metrics, the further down the SERP.<\/p>\n\n\n\n
Since the update, we can see that Google seems to be taking a delicate stance, leveling out the rest of the SERPs instead of changing the top rankings due to CWV factors.<\/p>\n\n\n\n
But once again, this data does not imply that it is CWV-related factors that affect the SERPs.<\/p>\n\n\n\n
As the Page Experience Update now only applies to mobile search results, we predominantly focused on analyzing mobile SERPs.<\/p>\n\n\n\n
But, as Google confirmed, it will roll out the update to desktop as well, so we also checked how desktop SERPs are doing in relation to CWV-friendliness.<\/p>\n\n\n\n
As for the share of URLs that fall within the \u2018Good\u2019 range for all three CWV metrics, we see the following stats:<\/p>\n\n\n\n
Overall, desktop stats show a more obvious improvement trend for all CWV metrics compared to mobile:<\/p>\n\n\n\n
The majority of pages ranking for the top 10 positions on desktop SERPs have \u2018Good\u2019 LCP.<\/p>\n\n\n\n
We can see a similar share of pages that are within the \u2018To improve\u2019 TBT range on both mobile and desktop SERPs. Unlike mobile data, the majority of desktop URLs have \u2018Good\u2019 TBT values. This is expected as it\u2019s easier to pass the thresholds on desktop as mobile emulates a 3G network. But one month into the update, the metric\u2019s values deteriorated by an insignificant 1.5% margin compared to the pre-update levels.<\/p>\n\n\n\n
As you can see, interim data indicates that it\u2019s too early to be assessing the impact of Google\u2019s Page Experience update.<\/p>\n\n\n\n
So far, we haven\u2019t spotted any significant changes in rankings or managed to link them to CSW factors, so it\u2019s hard to pinpoint any systematic patterns at this point. But some initial analysis may imply that there is a general improvement trend in regard to CWV.<\/p>\n\n\n\n
Yet, we still have one more month to see the full rollout, and we sure will revisit our impact assessment after August once the update is complete. So stay tuned to our data studies to see the full analysis of the Page Experience Update\u2019s aftermath.<\/p>\n\n\n\n
In the meantime, while the update is still rolling out, make sure to utilize intel from tools like Site Audit (don\u2019t forget to leverage site improvement ideas from the Performance Report), as well as field data from Google Search Console and PageSpeed Insights to optimize your website for the final stage of the Page Experience Update.<\/p>\n\n\n\n
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Just a few months ago, we covered how to prepare for the 2021 Core Web Vitals update. The update is already here. It was released back in June 2021. Unlike the rest, its rollout is expected to span across a few months, so it\u2019s too early to assess the full aftermath. Yet, as we pass […]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-29741","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/posts\/29741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/comments?post=29741"}],"version-history":[{"count":1,"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/posts\/29741\/revisions"}],"predecessor-version":[{"id":30087,"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/posts\/29741\/revisions\/30087"}],"wp:attachment":[{"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/media?parent=29741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/categories?post=29741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/alienroad.com\/wp-json\/wp\/v2\/tags?post=29741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}