1
At a glance the headline numbers for RUM impact
Performance impact by rum provider.
4
Providers ranked
After min-sites filter
6,282
Sites in sample
Combined across all items
0.00
Best CLS (p75)
Sentry
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Sentry | 0.00 | 96.9% | 5,930 | |
| 2 | Vercel Analytics | 0.00 | 99.2% | 208 | |
| 3 | Cloudflare Web Analytics | 0.06 | 87.0% | 65 | |
| 4 | Netlify Analytics | 0.33 | 12.9% | 79 |
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Akamai mPulse 0.2% 15 0.04
SpeedCurve LUX 0.1% 6 0.09
Vercel Analytics 2.2% 208 0.00
Sentry 62% 5,930 0.00
Datadog RUM 0.2% 16 0.09
Cloudflare Web Analytics 0.7% 65 0.06
New Relic Browser 0.3% 26 0.10
Elastic RUM 0.1% 6 0.16
Netlify Analytics 0.8% 79 0.33
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site
No provider stands out: pass rates sit between 97% and 99%. computed
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
4
All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75
LCP
INP
CLS
FCP
TTFB
Sentry 62%
941.6s
9698ms
970.00
931.1s
85593ms
Vercel Analytics 2.2%
871.9s
96113ms
990.00
851.4s
78665ms
Netlify Analytics 0.8%
792.4s
18777ms
130.33
861.5s
71.2s
Cloudflare Web Analytics 0.7%
632.8s
80170ms
870.06
542.4s
321.8s
New Relic Browser 0.3%
682.7s
85145ms
820.10
681.8s
591.0s
Datadog RUM 0.2%
543.5s
39263ms
920.09
692.5s
461.3s
Akamai mPulse 0.2%
932.1s
43253ms
1000.04
671.9s
401.0s
Elastic RUM 0.1%
831.9s
100170ms
670.16
1001.2s
67817ms
SpeedCurve LUX 0.1%
1001.7s
17309ms
1000.09
1001.3s
67804ms
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites
One row per provider, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.
Vercel Analytics leads on CLS: 99% of its sites pass. Sentry trails at 97%. computed
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
Related signals Tag managers (8) → A/B testing (12) → Consent platforms (16) → Reviews (8) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured
210,902 crawled sites with Chrome field data, representing millions of real page loads. How we measured.