Ad networks impact WordPress sites

Ad networks ranked by performance impact.

Field data PhoneDesktopAll Scope All sites October 2026 edition · Phone field outcomes · WordPress sites only
Metric LCP INP CLS
WordPress Scoped to 63,295 sites out of 203,892 analyzed (cms) Compare with all sites →
1

At a glance the headline numbers for Ad networks impact

Ad networks ranked by performance impact.

6
Providers ranked
After min-sites filter
6,105
Sites in sample
Combined across all items
151ms
Best INP (p75)
Amazon Publisher Services
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by INP at p75, fastest first

# Provider INP p75 Passing Sites
1 Amazon Publisher Services 151ms 96.1%
70
2 Prebid.js 161ms 88.8%
273
3 Criteo 161ms 89.8%
53
4 Google AdSense 163ms 87.6%
4,815
5 Google Publisher Tag/GAM 167ms 88.3%
811
6 Taboola 178ms 83.6%
83
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
3

Passing INP per provider which group passes the INP most often

ProviderSitesPassing INPp75
Media.net 0% 6 100% 150ms
Amazon Publisher Services 0.1% 70 96% 151ms
Index Exchange 0% 11 91% 176ms
Criteo 0.1% 53 90% 161ms
Prebid.js 0.4% 273 89% 161ms
Google Publisher Tag/GAM 1.3% 811 88% 167ms
Google AdSense 7.6% 4,815 88% 163ms
Taboola 0.1% 83 84% 178ms
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good INP (200ms at p75) · one value per site

No provider stands out: pass rates sit between 88% and 89%. computed

The State of Web Vitals · October 2026 · WordPress sites (63,295) · 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
Google AdSense 7.6%
652.9s
88163ms
840.06
532.4s
301.9s
Google Publisher Tag/GAM 1.3%
702.6s
88167ms
740.11
632.2s
461.4s
Prebid.js 0.4%
722.6s
89161ms
750.11
682.1s
541.2s
Taboola 0.1%
672.7s
84178ms
710.14
632.1s
481.5s
Amazon Publisher Services 0.1%
712.8s
96151ms
610.16
711.9s
70984ms
Criteo 0.1%
393.5s
90161ms
670.15
442.8s
311.8s
Index Exchange 0%
552.7s
91176ms
730.12
552.4s
461.6s
Media.net 0%
802.5s
100150ms
600.13
602.3s
01.9s
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 INP: 89% of its sites pass. Google Publisher Tag/GAM trails at 88%. computed

The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Email marketing (8) → Font services (4) → CDN (16) → 203,892 crawled sites with Chrome field data, representing millions of real page loads · How we measured