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. Poor CLS is disorienting and frustrating. Google also uses it as a ranking signal — pages with high layout instability rank lower in search results. A score above 0.25 is classified as "poor" by Google's Core Web Vitals standards. 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.

Why this matters

Poor CLS is disorienting and frustrating. Google also uses it as a ranking signal — pages with high layout instability rank lower in search results. A score above 0.25 is classified as "poor" by Google's Core Web Vitals standards.

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.