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 · Phone 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.

91.6%
of sites pass CLS
0.00
Typical site
0.08
Worst 10% of sites

91.6% of sites pass CLS. The typical site's CLS is 0.00. The worst 10% are above 0.08.

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

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

0 1,144 2,288 3,431 4,575
0–0.0254,575 sites83.6% of all sites
0.025–0.05167 sites3.1% of all sites
0.05–0.075160 sites2.9% of all sites
0.075–0.182 sites1.5% of all sites
0.1–0.12583 sites1.5% of all sites
0.125–0.1559 sites1.1% of all sites
0.15–0.17528 sites0.5% of all sites
0.175–0.224 sites0.4% of all sites
0.2–0.22526 sites0.5% of all sites
0.225–0.2518 sites0.3% of all sites
0.25–0.27530 sites0.5% of all sites
0.275–0.335 sites0.6% of all sites
0.3–0.32534 sites0.6% of all sites
0.325–0.3529 sites0.5% of all sites
0.35–0.37514 sites0.3% of all sites
0.375–0.48 sites0.1% of all sites
0.4 and up100 sites1.8% of all sites
p50 = 0.00
p75 = 0.01
p90 = 0.08
p99 = 0.51
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: 5,472 sites

Most sites pass CLS. 91.6% sit at or under 0.10. The typical site is at 0.00, and 75% of sites stay under 0.01. Only 8.4% fail CLS. The worst 10% are above 0.08, and the worst 1% are above 0.51.

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

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

CLS
91.6%
4.3%
Good Needs Improvement Poor

91.6% of sites pass CLS. 4.1% are in the needs improvement band, between 0.1 and 0.25. 4.3% are poor, above 0.25. A miss usually goes all the way to poor.

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