Drop of URLs in Core Web Vitals

[Kateryna Bolotnikova]

Hey!

On February 6, on our website nur.kz, began the drop of analysed URLs in Core Web Vitals report https://prnt.sc/zq9z97 The urls didn't changed their status from "need improvement" to "poor", they simply disappeared from report.

In the "Coverage" report, we see the growth of valid pages https://prnt.sc/zqa5a5 . The positions and traffic of our site didn't deteriorate https://prnt.sc/zqacbe

What could lead to such consequences and can we change them?

[Peter Nikolow]

Probably some change on CrUX aggregation of data.

Here is example:

https://prnt.sc/zqn2z5

and root cause:
https://prnt.sc/zqn937

Site is constant on Search Console - no indexing changes or search performance click changes too.

If you need to go deeper on this issue then you need to use CGP BigQuery request to CrUX dataset:
https://web.dev/chrome-ux-report-bigquery/
and here are few queries that may help you:
https://github.com/GoogleChrome/CrUX

Now - mine theory is that URL Similarities on second screenshot has been changed. 

But this isn't something that we should hesitating because it's out of our control.

There isn't consequences and you can't change anything. Except to make your site faster.

Regards,

Peter

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[Kateryna Bolotnikova]

Thank you for your help!