[CrUX Announce] The 202505 dataset is live

['Barry Pollard' via Chrome UX Report (Announcements)]

Hi CrUX users,

This is your monthly announcement that the latest dataset has been published to BigQuery.

The 202505 (May 2025) dataset is now available and it covers 18,263,455 origins, an increase of 0.3% over last month.

Here's a look at origins' Core Web Vitals performance this month:

• 67.6% of origins (↓ 0.4%) had good LCP

• 78.3% of origins (↓ 0.2%) had good CLS

• 85.3% of origins (↓ 0.1%) had good INP

• 52.7% of origins (↓ 0.5%) had good LCP, CLS and INP

We've noticed a small dip in all the metrics, but haven't been able to identify any particular reasons for this. Looking historically there is often a small dip in May so hopefully we'll see a turnaround next month!

Cheers,

Barry

[Kieran Shuttlewood]

Hi Barry,

Apologies if this isn't the best place to ask - I wasn't sure where to send this, 

I noticed that some origins seem to have dropped from the dataset in the latest month. Do you know what might be causing this? 

April:

https://promo.bwin.es 

https://www.bwin.es

https://livegames.bwin.es 

https://playcasinoclient.bwin.es 

https://casino.bwin.es 

https://sports.bwin.es 

https://poker.bwin.es 

May: 

https://www.bwin.es 

https://livegames.bwin.es 

https://playcasinoclient.bwin.es 

Any clarity on this would be appreciated

Many thanks,

Kieran  

[Barry Pollard]

Those URLs redirect to other origins.

For example https://promo.bwin.es redirects to https://www.bwin.es/es/promo/offers. We only include the final URL in CrUX and do include its origin (https://www.bwin.es) in CrUX, but since https://promo.bwin.es is no longer the final URL for any visited users it no longer appears in CrUX.

I presume this changed recently?

[Fili Wiese]

Hello Kieran,

The origin needs to be discoverable, indexable and have enough visitors. 

SInce you now redirect these subdomains, they are not indexable and as such not included in the CrUX dataset.

See also:

https://developer.chrome.com/docs/crux/methodology#discoverability-eligibility

Hope this helps,

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