Google Chrome

With the release of Chrome 88, you can now view Core Web Vitals data in the Performance Recording section of Developer Tools. Web Vitals information such as FCP (First Contentful Paint), LCP (Largest Contentful Paint) and LS (Layout Shift) is currently displayed in the track. In short, there is now a new data trail for Core Web Vitals in this performance tracking section.

In the Chrome 88 Developer Tools, you can now view information about Google Web Vitals under Performance Records. After recording your charging performance, select the Web Vitals check box in the Performance area to display the new Web Vitals trace. This information track currently shows Web Vitals information such as FCP (First Contentful Paint), LCP (Largest Contentful Paint) and LS (Layout Shift).

Here is a screenshot that shows this in action:

Click for full size

Glenn Gabe said on Twitter that this was a "great addition".

Just make sure you update Chrome to 88, enable Developer Tools, and give it a try. It can help you debug these important web metrics in real time and in a very granular manner.

A little note on this in relation to the HTTP content:

Generally yes, but I would be careful to make general assumptions about Googlebot's network behavior based on Chrome, as rendering through our crawler interfaces with the network

– Martin Splitt (@ g33konaut), January 21, 2021

I don't know right now. I haven't tested this behavior yet.

– Martin Splitt (@ g33konaut), January 21, 2021

It should be fine as Googlebot can access the HTML.

Here is a screenshot of what it looks like. I hope it helps. pic.twitter.com/lT6uzROwmJ

– Glenn Gabe (@glenngabe) January 21, 2021

Forum discussion on Twitter.

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