Bot detection impact React sites
Performance impact by bot_detection provider.
1
At a glance the headline numbers for Bot detection impact
Performance impact by bot_detection provider.
1
Providers ranked
After min-sites filter
1,700
Sites in sample
Combined across all items
0.04
Best CLS (p75)
reCAPTCHA
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 | reCAPTCHA | 0.04 | 85.3% | 1,700 |
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 Bot Manager 0.1% 14 0.04
reCAPTCHA 17.8% 1,700 0.04
Cloudflare Turnstile 0.2% 17 0.06
hCaptcha 0.2% 21 0.28
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
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
reCAPTCHA 17.8%
682.8s
89147ms
850.04
632.2s
471.6s
hCaptcha 0.2%
712.8s
77178ms
590.28
712.0s
531.6s
Cloudflare Turnstile 0.2%
732.6s
89178ms
820.06
642.3s
551.8s
Akamai Bot Manager 0.1%
792.2s
54239ms
860.04
502.0s
141.2s
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.
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
Related signals Push notifications (5) → Image CDNs (9) → RUM (14) → Marketing pixels (10) → 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.