Ad networks impact: 6 providers ranked | The State of Web Vitals 2026

LCP INP CLS

At a glance the headline numbers for Ad networks impact

Ad networks ranked by performance impact.

Providers ranked

After min-sites filter

17,864

Sites in sample

Combined across all items

0.11

Best CLS (p75)

Google AdSense

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv

The ranking sorted by CLS at p75, fastest first

#	Provider	CLS p75	Passing	Sites
1	Google AdSense	0.11	74.1%	12,952
2	Criteo	0.13	66.3%	450
3	Taboola	0.13	68.5%	482
4	Google Publisher Tag/GAM	0.13	67.9%	2,840
5	Amazon Publisher Services	0.14	64.4%	299
6	Prebid.js	0.14	62.7%	841

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75

Google AdSense 6.8% 12,952 74% 0.11

Outbrain 0% 25 70% 0.12

Taboola 0.3% 482 69% 0.13

Google Publisher Tag/GAM 1.5% 2,840 68% 0.13

Criteo 0.2% 450 66% 0.13

Amazon Publisher Services 0.2% 299 64% 0.14

Prebid.js 0.4% 841 63% 0.14

Index Exchange 0% 45 58% 0.14

Media.net 0% 21 57% 0.22

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

74% of Google AdSense sites pass CLS. Prebid.js trails 11 points behind, leaving 37% of its sites failing. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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 Publisher Tag/GAM 1.5%

881.9s

9786ms

680.13

861.4s

71870ms

Amazon Publisher Services 0.2%

872.0s

9599ms

640.14

881.3s

78745ms

Criteo 0.2%

862.1s

95115ms

660.13

861.5s

69926ms

Outbrain 0%

911.6s

9165ms

700.12

961.2s

78731ms

Index Exchange 0%

882.0s

10079ms

580.14

881.3s

74813ms

Google AdSense 6.8%

852.1s

9882ms

740.11

801.6s

591.2s

Prebid.js 0.4%

901.9s

9689ms

630.14

891.4s

74838ms

Taboola 0.3%

881.9s

9890ms

690.13

881.4s

77754ms

Media.net 0%

572.8s

100170ms

570.22

572.4s

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.

Google AdSense leads on CLS: 74% of its sites pass. Prebid.js trails at 63%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv

Related signals JS libraries (25) → Email marketing (8) → Font services (4) → CDN (16) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured