During a hangout, one SEO professional asked John Mueller about Core Web Vitals, and if this could impact a site in the search results overall.
The professional asked John: So they prioritize their high search pages for product improvements, like anyone else would do.
Hypothetically, if they had a subset of pages with poor LCP or CLS, say video pages on the site that aren’t the main, or secondary, or even tertiary search traffic drivers, could a few pages with bad Core Web Vitals actually drag a site down?
John explained that this usually wouldn’t be a problem. He believes that there are two aspects here. On the one hand for Core Web Vitals, Google examines a sample of the traffic to these pages, which is done through the Chrome User Experience Report (also referred to as the CRUX report).
It’s a portion of the traffic to your website.
This means that for the most part, the things that Google will examine the most are the pages that get the most visits.
If you have random pages on the site that nobody ever looks at, and they are really slow, then these will not drag your site down – and the reverse is also true.
If these random pages were really fast, then they would not be pulling your site up either.
Even if it’s a lot of random pages, if they just don’t get much traffic, then Google doesn’t really care about them.
The idea here is that the main things people see should have a good user experience. If most people are seeing a certain portion of your site, then that’s the part that Google would want to focus on.
The other thing is with the page experience update, depending on how much data they have for your site, Google may split it up into different sections. And they try to do that by understanding which pages across a site are similar.
And this can be by type of template, or something like that.
Which means if Google can see a template that is mostly for an e-commerce site, and all the product pages are really fast.
Perhaps they have enough data to look at the product pages separately, then they can have that group of pages be treated on its own.
Then there are different kinds of pages across the site that could have data that’s kind of slow, and they could say “Well, this type of page is slower than the others.”
That’s the second part there.
So long as Google has enough data for the specific page type, then this is likely to be affected by Core Web Vitals and the page experience update.
This happens at approximately the 8:29 mark in the video.