The State of Web Vitals

CLS distribution React sites

How CLS is distributed across real-user data, plus pass-rate breakdown.

Field data PhoneDesktopAll Scope All sites October 2026 edition · Desktop field outcomes · React sites only
React Scoped to 9,570 sites out of 210,902 analyzed (frameworks) Compare with all sites →
1

At a glance the headline numbers for CLS distribution

How CLS is distributed across real-user data, plus pass-rate breakdown.

79.7%
of sites pass CLS
0.02
Typical site
0.23
Worst 10% of sites

79.7% of sites pass CLS. The typical site's CLS is 0.02. The worst 10% are above 0.23.

The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
2

The CLS distribution site count at each CLS, from good to poor

0 272 544 816 1,088
0–0.0251,088 sites55% of all sites
0.025–0.05180 sites9.1% of all sites
0.05–0.075187 sites9.5% of all sites
0.075–0.181 sites4.1% of all sites
0.1–0.12590 sites4.6% of all sites
0.125–0.1558 sites2.9% of all sites
0.15–0.17529 sites1.5% of all sites
0.175–0.224 sites1.2% of all sites
0.2–0.22539 sites2% of all sites
0.225–0.2519 sites1% of all sites
0.25–0.27521 sites1.1% of all sites
0.275–0.332 sites1.6% of all sites
0.3–0.32515 sites0.8% of all sites
0.325–0.3511 sites0.6% of all sites
0.35–0.3758 sites0.4% of all sites
0.375–0.411 sites0.6% of all sites
0.4 and up85 sites4.3% of all sites
p50 = 0.02
p75 = 0.08
p90 = 0.23
p99 = 0.76
0–0.025 0.025–0.05 0.05–0.075 0.075–0.1 0.1–0.125 0.125–0.15 0.15–0.175 0.175–0.2 0.2–0.225 0.225–0.25 0.25–0.275 0.275–0.3 0.3–0.325 0.325–0.35 0.35–0.375 0.375–0.4 0.4+
Good (≤0.10) Needs improvement Poor (>0.25) Percentile markers Total: 1,978 sites

Most sites pass CLS. 79.7% sit at or under 0.10. The typical site is at 0.02, and 75% of sites stay under 0.08. Only 20.3% fail CLS. The worst 10% are above 0.23, and the worst 1% are above 0.76.

The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
3

The CLS pass rate the share of sites that are good, needs improvement and poor

CLS
79.7%
11.5%
8.8%
Good Needs Improvement Poor

79.7% of sites pass CLS. 11.5% are in the needs improvement band, between 0.1 and 0.25. 8.8% are poor, above 0.25. Misses split about evenly between the two.

The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
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