1
At a glance the headline numbers for Bot detection impact
Performance impact by bot_detection provider.
6
Providers ranked
After min-sites filter
57,799
Sites in sample
Combined across all items
0.02
Best CLS (p75)
hCaptcha
The State of Web Vitals · November 2026 · 213,971 crawled sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | hCaptcha | 0.02 | 91.1% | 1,106 | |
| 2 | reCAPTCHA | 0.03 | 87.2% | 55,754 | |
| 3 | DataDome | 0.06 | 81.0% | 256 | |
| 4 | Cloudflare Turnstile | 0.07 | 79.3% | 418 | |
| 5 | Imperva Bot Management | 0.09 | 78.8% | 65 | |
| 6 | Akamai Bot Manager | 0.13 | 71.0% | 200 |
The State of Web Vitals · November 2026 · 213,971 crawled sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
hCaptcha 0.5% 1,106 0.02
reCAPTCHA 26.1% 55,754 0.03
DataDome 0.1% 256 0.06
Cloudflare Turnstile 0.2% 418 0.07
Imperva Bot Management 0% 65 0.09
PerimeterX/HUMAN 0% 15 0.07
Akamai Bot Manager 0.1% 200 0.13
Kasada 0% 5 0.31
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
91% of hCaptcha sites pass CLS. Akamai Bot Manager trails 20 points behind, leaving 29% of its sites failing. computed
The State of Web Vitals · November 2026 · 213,971 crawled sites · 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 26.1%
762.5s
92137ms
870.03
702.0s
521.3s
hCaptcha 0.5%
852.0s
86154ms
910.02
801.6s
681.0s
Cloudflare Turnstile 0.2%
822.2s
80176ms
790.07
741.8s
561.2s
DataDome 0.1%
672.8s
76197ms
810.06
701.9s
571.3s
Akamai Bot Manager 0.1%
662.9s
62243ms
710.13
562.1s
401.2s
Imperva Bot Management 0%
692.7s
80189ms
790.09
642.2s
541.1s
PerimeterX/HUMAN 0%
464.0s
50277ms
770.07
393.5s
312.1s
Kasada 0%
602.6s
20340ms
200.31
401.9s
401.1s
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.
hCaptcha leads on CLS: 91% of its sites pass. Akamai Bot Manager trails at 71%. computed
The State of Web Vitals · November 2026 · 213,971 crawled sites · phone field datacorewebvitals.io/state-of-cwv
Related signals Push notifications (5) → Image CDNs (9) → RUM (14) → Marketing pixels (10) → 213,971 crawled sites with Chrome field data, representing millions of real page loads · How we measured
213,971 crawled sites with Chrome field data, representing millions of real page loads. How we measured.