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

2.6s

Best LCP (p75)

Prebid.js

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

The ranking sorted by LCP at p75, fastest first

#	Provider	LCP p75	Passing	Sites
1	Prebid.js	2.6s	71.7%	273
2	Google Publisher Tag/GAM	2.6s	70.4%	811
3	Taboola	2.7s	67.2%	83
4	Amazon Publisher Services	2.8s	70.9%	70
5	Google AdSense	2.9s	65.4%	4,815
6	Criteo	3.5s	38.5%	53

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

Passing LCP per provider which group passes the LCP most often

ProviderSitesPassing LCPp75

Media.net 0% 6 80% 2.5s

Prebid.js 0.4% 273 72% 2.6s

Amazon Publisher Services 0.1% 70 71% 2.8s

Google Publisher Tag/GAM 1.3% 811 70% 2.6s

Taboola 0.1% 83 67% 2.7s

Google AdSense 7.6% 4,815 65% 2.9s

Index Exchange 0% 11 55% 2.7s

Criteo 0.1% 53 39% 3.5s

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

72% of Prebid.js sites pass LCP. Google AdSense trails 7 points behind, leaving 35% of its sites failing. computed

The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone 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%

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 LCP: 72% of its sites pass. Google AdSense trails at 65%. 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

Ad networks impact WordPress sites

At a glance the headline numbers for Ad networks impact

The ranking sorted by LCP at p75, fastest first

Passing LCP per provider which group passes the LCP most often

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