Cumulative Layout Shift score is poor
Cumulative Layout Shift (CLS) measures how much your page's content jumps around while it is loading. A high CLS score means elements - text, buttons, images - visibly move or reflow as the page settles, which can cause visitors to accidentally click the wrong thing.
Why this matters
Poor CLS is disorienting and frustrating. Google includes Core Web Vitals, of which CLS is one, among the page experience signals it uses in search, though as one signal among many and not as a guarantee of ranking. A score above 0.25 is classified as 'poor' by Google's Core Web Vitals thresholds.
How to fix it
The most common causes are images and embeds without defined width and height attributes, and web fonts that cause text to reflow when they load. A developer running a Lighthouse audit can identify the specific elements causing the shift and apply targeted fixes.
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