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How Often Will Core Web Vitals Ranking Factor Be Calculated? via @sejournal, @martinibuster



In a Google SEO office-hours hangout someone asked John Mueller about the update schedule for the ranking factor associated with the Core Web Vitals (CWV) scores. Will the ranking factor be updated in real-time or every 28 days?

The answer could be important because publishers who make changes to improve their Core Web Vitals (CWV) scores may be anxious to see the positive results of their changes, regardless of how small the ranking factor itself is.

This is the question asked:

“This page experience algorithm which is coming in May… just wanted to know if it will be a real-time algorithm or something like core updates where it will be updated from time to time?”


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Usually when John Mueller is asked a tricky question he pauses to think about it. But with this question he answered right away without hesitation.

Screenshot of Google's John Mueller answering question about core web vitals ranking factor update schedule

Screenshot of Google's John Mueller answering question about core web vitals ranking factor update schedule




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“I don’t know… I don’t know if that’s uh… decided completely yet.

I mean… part of that is also that there is just a general lag for the data anyway.

…We kind of have to wait that period of time until we have collected enough data.”

Mueller was making a reference to the Chrome User Experience data (CrUX) that is collected by Chrome users who have opted into participate in providing page speed and web vitals information to Google.

The core web vitals data is collected and updated every 28 days. That means the scores reported in Google Search Console or in tools like PageSpeed Insights are reports of what Google measured in (roughly) the previous 28 days.

That’s what Mueller was referencing when he said there was a “general lag for the data.”

Mueller continued his answer:

“So I suspect it’s not something that will be optimized for… speedy updates but more kind of to have a clear understanding of the overall picture.

…my guess is it’ll be more something of a slow thing rather than a real-time change.”


Does CWV Ranking Update Schedule Matter?

Some algorithm related factors are applied in real-time, like links. The Penguin algorithm has been described by Google to be a real-time algorithm.

Other factors like a widescale change to website content can take up to a few months to impact rankings depending on how many pages have changed.


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With regard to how often the Core Web Vitals ranking factor will be updated, John Mueller admitted that he didn’t know how often the Core Web Vitals ranking factors will be applied.

It’s apparently something that’s not been discussed with him and frankly it’s probably not something people are wondering about… until now.

Some may believe that knowing how often the CWV ranking signal is updated is important because ranking factors can impact rankings.

When a site publisher updates their site there follows a waiting period for feedback that will indicate how the changes impact ranking (if at all).



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His answer was more of an educated guess and a very reasonable one.

Would a more accurate and definitive answer matter?


Watch the video, beginning at about the 50 second spot:

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Google December Product Reviews Update Affects More Than English Language Sites? via @sejournal, @martinibuster



Google’s Product Reviews update was announced to be rolling out to the English language. No mention was made as to if or when it would roll out to other languages. Mueller answered a question as to whether it is rolling out to other languages.

Google December 2021 Product Reviews Update

On December 1, 2021, Google announced on Twitter that a Product Review update would be rolling out that would focus on English language web pages.

The focus of the update was for improving the quality of reviews shown in Google search, specifically targeting review sites.

A Googler tweeted a description of the kinds of sites that would be targeted for demotion in the search rankings:

“Mainly relevant to sites that post articles reviewing products.

Think of sites like “best TVs under $200″.com.

Goal is to improve the quality and usefulness of reviews we show users.”



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Google also published a blog post with more guidance on the product review update that introduced two new best practices that Google’s algorithm would be looking for.

The first best practice was a requirement of evidence that a product was actually handled and reviewed.

The second best practice was to provide links to more than one place that a user could purchase the product.

The Twitter announcement stated that it was rolling out to English language websites. The blog post did not mention what languages it was rolling out to nor did the blog post specify that the product review update was limited to the English language.

Google’s Mueller Thinking About Product Reviews Update

Screenshot of Google's John Mueller trying to recall if December Product Review Update affects more than the English language

Screenshot of Google's John Mueller trying to recall if December Product Review Update affects more than the English language

Product Review Update Targets More Languages?

The person asking the question was rightly under the impression that the product review update only affected English language search results.



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But he asserted that he was seeing search volatility in the German language that appears to be related to Google’s December 2021 Product Review Update.

This is his question:

“I was seeing some movements in German search as well.

So I was wondering if there could also be an effect on websites in other languages by this product reviews update… because we had lots of movement and volatility in the last weeks.

…My question is, is it possible that the product reviews update affects other sites as well?”

John Mueller answered:

“I don’t know… like other languages?

My assumption was this was global and and across all languages.

But I don’t know what we announced in the blog post specifically.


But usually we try to push the engineering team to make a decision on that so that we can document it properly in the blog post.

I don’t know if that happened with the product reviews update. I don’t recall the complete blog post.

But it’s… from my point of view it seems like something that we could be doing in multiple languages and wouldn’t be tied to English.

And even if it were English initially, it feels like something that is relevant across the board, and we should try to find ways to roll that out to other languages over time as well.

So I’m not particularly surprised that you see changes in Germany.

But I also don’t know what we actually announced with regards to the locations and languages that are involved.”

Does Product Reviews Update Affect More Languages?

While the tweeted announcement specified that the product reviews update was limited to the English language the official blog post did not mention any such limitations.

Google’s John Mueller offered his opinion that the product reviews update is something that Google could do in multiple languages.


One must wonder if the tweet was meant to communicate that the update was rolling out first in English and subsequently to other languages.

It’s unclear if the product reviews update was rolled out globally to more languages. Hopefully Google will clarify this soon.


Google Blog Post About Product Reviews Update

Product reviews update and your site

Google’s New Product Reviews Guidelines

Write high quality product reviews

John Mueller Discusses If Product Reviews Update Is Global

Watch Mueller answer the question at the 14:00 Minute Mark

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