Google's three experience metrics (LCP, INP and CLS), their recommended values and how they affect your customers.

LCP: how long until it shows

Measures when the main content appears. Google recommends 2.5 seconds or less.

INP: how long until it responds

Measures how fast the page reacts when you tap a button. The recommended value is 200 milliseconds or less.

CLS: nothing should jump

Measures how much content shifts while loading. The target is 0.1 or less; nothing is more frustrating than tapping the wrong button.

Why we hand over the numbers

We measure these before launch and give you the result in writing, so speed is a fact, not a promise.

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