Ad networks impact on WordPress sites | The State of Web Vitals 2026

LCP INP CLS

WOWordPress Scoped to 63,295 sites out of 203,892 analyzed (cms) Compare with all sites →

At a glance the headline numbers for Ad networks impact

Ad networks ranked by performance impact.

Providers ranked

After min-sites filter

6,105

Sites in sample

Combined across all items

0.08

Best CLS (p75)

Google AdSense

The State of Web Vitals · October 2026 · WordPress sites (63,295) · all devices field datacorewebvitals.io/state-of-cwv

The ranking sorted by CLS at p75, fastest first

#	Provider	CLS p75	Passing	Sites
1	Google AdSense	0.08	81.1%	4,815
2	Prebid.js	0.11	73.8%	273
3	Google Publisher Tag/GAM	0.11	72.4%	811
4	Taboola	0.13	73.2%	83
5	Amazon Publisher Services	0.16	60.3%	70
6	Criteo	0.17	64.2%	53

The State of Web Vitals · October 2026 · WordPress sites (63,295) · all devices field datacorewebvitals.io/state-of-cwv

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75

Google AdSense 7.6% 4,815 81% 0.08

Prebid.js 0.4% 273 74% 0.11

Taboola 0.1% 83 73% 0.13

Google Publisher Tag/GAM 1.3% 811 72% 0.11

Media.net 0% 6 67% 0.11

Criteo 0.1% 53 64% 0.17

Amazon Publisher Services 0.1% 70 60% 0.16

Index Exchange 0% 11 55% 0.21

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 Google AdSense sites pass CLS. Google Publisher Tag/GAM trails 9 points behind, leaving 28% of its sites failing. computed

The State of Web Vitals · October 2026 · WordPress sites (63,295) · all devices field datacorewebvitals.io/state-of-cwv

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%

642.9s

93138ms

810.08

522.5s

272.0s

Google Publisher Tag/GAM 1.3%

722.6s

92154ms

720.11

642.1s

451.5s

Prebid.js 0.4%

742.5s

92151ms

740.11

692.0s

551.2s

Taboola 0.1%

772.5s

88170ms

730.13

652.0s

481.4s

Amazon Publisher Services 0.1%

762.5s

97133ms

600.16

771.7s

72953ms

Criteo 0.1%

403.5s

92154ms

640.17

422.8s

301.8s

Index Exchange 0%

552.8s

91163ms

550.21

552.3s

461.5s

Media.net 0%

672.5s

100153ms

670.11

672.1s

01.8s

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.

Google AdSense leads on CLS: 81% of its sites pass. Google Publisher Tag/GAM trails at 72%. computed

The State of Web Vitals · October 2026 · WordPress sites (63,295) · all devices 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

Ad networks impact WordPress sites

At a glance the headline numbers for Ad networks impact

The ranking sorted by CLS at p75, fastest first

Passing CLS per provider which group passes the CLS most often

All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75