Bot detection impact

Performance impact by bot_detection provider.

Field data PhoneDesktopAll Scope All sites Q1 2026 edition · Desktop field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Bot detection impact

Performance impact by bot_detection provider.

5
Providers ranked
After min-sites filter
26,874
Sites in sample
Combined across all items
0.08
Best CLS (p75)
hCaptcha
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 hCaptcha 0.08 80.9%
525
2 Cloudflare Turnstile 0.10 75.6%
190
3 reCAPTCHA 0.10 76.5%
25,928
4 DataDome 0.12 70.9%
121
5 Akamai Bot Manager 0.13 66.3%
110
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
hCaptcha 0.6% 525 81% 0.08
reCAPTCHA 27.3% 25,928 77% 0.10
Cloudflare Turnstile 0.2% 190 76% 0.10
DataDome 0.1% 121 71% 0.12
Akamai Bot Manager 0.1% 110 66% 0.13
Imperva Bot Management 0% 38 66% 0.17
PerimeterX/HUMAN 0% 8 50% 0.24
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

81% of hCaptcha sites pass CLS. Akamai Bot Manager trails 15 points behind, leaving 34% of its sites failing. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · desktop 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 27.3%
832.1s
9969ms
770.10
791.7s
561.2s
hCaptcha 0.6%
911.8s
9970ms
810.08
861.4s
681.1s
Cloudflare Turnstile 0.2%
902.1s
9782ms
760.10
791.6s
631.2s
DataDome 0.1%
832.1s
100102ms
710.12
801.7s
601.2s
Akamai Bot Manager 0.1%
782.4s
91124ms
660.13
701.9s
491.2s
Imperva Bot Management 0%
593.3s
9381ms
660.17
552.5s
451.9s
PerimeterX/HUMAN 0%
673.2s
100112ms
500.24
503.2s
502.6s
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: 81% of its sites pass. Akamai Bot Manager trails at 66%. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals Push notifications (4) → Image CDNs (9) → RUM (13) → Marketing pixels (10) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured