1
At a glance the headline numbers for Ad networks impact
Ad networks ranked by performance impact.
7
Providers ranked
After min-sites filter
19,954
Sites in sample
Combined across all items
1.9s
Best LCP (p75)
Google Publisher Tag/GAM
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by LCP at p75, fastest first
| # | Provider | LCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Google Publisher Tag/GAM | 1.9s | 88.4% | 3,188 | |
| 2 | Prebid.js | 1.9s | 89.2% | 940 | |
| 3 | Taboola | 1.9s | 88.8% | 529 | |
| 4 | Amazon Publisher Services | 2.0s | 86.4% | 327 | |
| 5 | Criteo | 2.1s | 85.9% | 490 | |
| 6 | Google AdSense | 2.1s | 85.0% | 14,427 | |
| 7 | Index Exchange | 2.2s | 82.4% | 53 |
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing LCP per provider which group passes the LCP most often
ProviderSitesPassing LCPp75
Prebid.js 0.4% 940 1.9s
Outbrain 0% 29 1.6s
Taboola 0.3% 529 1.9s
Google Publisher Tag/GAM 1.5% 3,188 1.9s
Amazon Publisher Services 0.2% 327 2.0s
Criteo 0.2% 490 2.1s
Google AdSense 6.8% 14,427 2.1s
Index Exchange 0% 53 2.2s
Media.net 0% 22 2.7s
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good LCP (2.5s at p75) · one value per site
No provider stands out: pass rates sit between 85% and 89%. computed
The State of Web Vitals · October 2026 · 210,902 crawled 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
Google AdSense 6.8%
852.1s
9883ms
750.11
801.6s
591.2s
Google Publisher Tag/GAM 1.5%
881.9s
9887ms
680.13
861.4s
71886ms
Prebid.js 0.4%
891.9s
9690ms
620.15
891.4s
74838ms
Taboola 0.3%
891.9s
9891ms
680.13
881.4s
77745ms
Criteo 0.2%
862.1s
93117ms
650.14
861.5s
69916ms
Amazon Publisher Services 0.2%
862.0s
9597ms
640.14
881.3s
78745ms
Index Exchange 0%
822.2s
10079ms
550.15
841.3s
72839ms
Outbrain 0%
891.6s
9265ms
740.11
931.2s
78697ms
Media.net 0%
572.7s
100149ms
570.17
572.3s
502.0s
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.
Prebid.js leads on LCP: 89% of its sites pass. Google AdSense trails at 85%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Email marketing (8) → Font services (4) → CDN (16) → 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.