cls score

12 apr. 2023 — CLS is a measure of the largest burst of layout shift scores for every unexpected layout shift that occurs during the entire lifecycle of a page.

Cumulative Layout Shift (CLS) is a performance metric introduced in 2020 by Lighthouse to measure the perceived visual stability of a page load.

11 juli 2025 — Cumulative Layout Shift (CLS) is a usability metric for websites, designed by Google as one of the Core Web Vital metrics.

What Is a Good CLS Score? A good cumulative layout shift score is anything below 0.1 while anything above 0.25 is considered poor.

Free CLS check. The CLS measures the largest burst of layout shift scores for all unexpected layout shifts that occur throughout the entire lifecycle of a page.

19 okt. 2025 — The Cumulative Layout Shift metric measures visual stability. Your CLS score increases when page content moves around after being rendered.

Cumulative Layout Shift (CLS) is a metric that evaluates site experience by measuring how much your site's pages shift unexpectedly.

31 juli 2025 — Measuring layout shift Cumulative Layout Shift (CLS) is a Core Web Vitals metric that you can use to quantify the impact of layout shifts on ...

6 okt. 2025 — A higher score means more layout instability. CLS Thresholds: Good (≤ 0.1): Minimal or no unexpected shifts, providing a stable experience.

One key metric is CLS (Cumulative Layout Shift), which measures how much the layout moves while the page loads. For example, you try to click a button and the ...