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PageSpeed Insights Adds New Lighthouse Speed Metrics

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PageSpeed Insights Adds New Lighthouse Speed Metrics #PageSpeed #Insights #Adds #Lighthouse #Speed #Metrics Welcome to TmZ Blog, here is the new story we have for you today:


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Google’s PageSpeed Insights added two new metrics to the PageSpeed Insights API and UI for Lighthouse. The two metrics are labeled experimental are now being collected for field data while the corresponding lab data can be used for diagnostic purposes.

Google Lighthouse Updated

Lighthouse is now updated with the two new metrics.

The new Lighthouse metrics are:

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Interaction to Next Paint (INP)
Time to First Byte (TTFB)

Time to First Byte (TTFB)

Many people will already know of Time to First Byte, it’s been around for many years and some may already be be familiar with it.

The Time to First Byte (TTFB) metric measures how fast the server responds to a request for a resource.

Thus, the importance of this metric is that it  helps to isolate one factor (server responsiveness) which can have a negative effect upon all other page loading metrics that come afterward.

That makes TTFB a very important metric to review for diagnostic purposes.

Anyone focused on improving Core Web Vitals should give TTFB a look for a possible quick win.

What’s changed about TTFB is that this is the first time it is available as a metric in the PageSpeed Insights results section.

Chrome will also collect and report TTFB field data for the first time as well.

Interaction to Next Paint (INP)

Interaction to Next Paint (INP) is a brand new metric that represents how long it takes to interact with the entire page, what Google calls the “overall interaction latency.”

INP measures represents how long it takes to interact with the entire page, which is in contrast with First Input Delay which only measures how long it takes for the page to respond to the first interaction by a site visitor.

Google uses an example of a shopping page to illustrate the difference between a good INP and a poor INP.

The example of a shopping page shows a clickable image that spawns a bigger closeup version.

The example of poor responsiveness is a user clicking the image then waiting for something to happen as the bigger image downloads to the browser. There is no feedback response to the click.

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