Cumulative Layout Shift
Example: A CLS of 0.25 (your hero image jumps the menu down 200px on load) makes 1-in-7 mobile visitors mis-tap the wrong CTA — usually the wrong reservation slot.
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CLS
A score that measures how much your page jumps around as it loads — when a banner slides in, an image arrives late, or a late-loading font nudges text down. Lower is better; under 0.1 is good.
Why it matters
If a customer taps "Reserve" and the button jumps at the last millisecond because a photo arrived and pushed it down, they tap the wrong thing and leave. A stable layout keeps conversions intact.
Frequently asked
What is Cumulative Layout Shift?
Cumulative Layout Shift is a score that measures how much your page jumps around as it loads — when a banner slides in, an image arrives late, or a late-loading font nudges text down. Lower is better; under 0.1 is good.
Why does Cumulative Layout Shift matter for a restaurant?
If a customer taps "Reserve" and the button jumps at the last millisecond because a photo arrived and pushed it down, they tap the wrong thing and leave. A stable layout keeps conversions intact.
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