Performance heads-up display in Chrome

As you may have noted, I'm busy with the performance on this website lately as we just talked about optimizing animated content, and improving our lighthouse score.

And with that, I found a super cool feature in Chrome, a so-called Performance Heads-up Display (HUD) baked in the core of Chrome!

This used to be an extension that you could add to Chrome, but it's now inside Chrome.
The display shows very useful information that you know from Lighthouse.

Including:

Largest Contentful Paint

First Input Delay

Cumulative Layout Shift

Average Dropped Frame

Max Dropped Frame

95th Percentile DF

Enable the performance heads-up display in Chrome

Of course, you are now wondering how to enable this, right?

Type about:flag in your chrome browser

Search for Show performance metrics in HUD

enable it and relaunch Chrome

These steps make it available in the top right corner.

This is super useful when doing many performance upgrades that you want to check right away, without waiting for Lighthouse to render.

The feature is also coming to mobile, but it doesn't seem to be in Chrome for iOS yet.

I am looking forward to also having the display there.

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