1
At a glance the headline numbers for Ad networks impact
Ad networks ranked by performance impact.
6
Providers ranked
After min-sites filter
9,463
Sites in sample
Combined across all items
1.9s
Best LCP (p75)
Google Publisher Tag/GAM
The State of Web Vitals · Q1 2026 · 94,910 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 | 88.8% | 1,487 | |
| 2 | Prebid.js | 1.9s | 89.0% | 441 | |
| 3 | Taboola | 1.9s | 89.6% | 247 | |
| 4 | Amazon Publisher Services | 1.9s | 88.2% | 158 | |
| 5 | Criteo | 2.0s | 86.8% | 231 | |
| 6 | Google AdSense | 2.0s | 85.6% | 6,899 |
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing LCP per provider which group passes the LCP most often
ProviderSitesPassing LCPp75
Taboola 0.3% 247 1.9s
Prebid.js 0.5% 441 1.9s
Google Publisher Tag/GAM 1.6% 1,487 1.9s
Amazon Publisher Services 0.2% 158 1.9s
Index Exchange 0% 24 2.2s
Criteo 0.2% 231 2.0s
Outbrain 0% 8 1.6s
Google AdSense 7.3% 6,899 2.0s
Media.net 0% 8 2.9s
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 86% and 90%. 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
Google AdSense 7.3%
862.0s
9982ms
740.11
811.6s
601.2s
Google Publisher Tag/GAM 1.6%
891.9s
9886ms
700.12
871.4s
71867ms
Prebid.js 0.5%
891.9s
9794ms
640.14
901.3s
74816ms
Taboola 0.3%
901.9s
9993ms
670.14
901.4s
81717ms
Criteo 0.2%
872.0s
95113ms
650.13
861.6s
67936ms
Amazon Publisher Services 0.2%
881.9s
9696ms
640.14
891.3s
78754ms
Index Exchange 0%
872.2s
100104ms
570.15
871.3s
70830ms
Outbrain 0%
861.6s
8672ms
710.10
1001.3s
71779ms
Media.net 0%
502.9s
100137ms
500.15
502.5s
332.4s
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.
Taboola leads on LCP: 90% of its sites pass. Google AdSense trails at 86%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (22) → Email marketing (7) → Font services (4) → CDN (15) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured
Chrome field data from 94,910 sites, representing millions of real page loads. How we measured.