Marketing pixels impact React sites

Marketing pixels and tracking SDKs ranked by performance impact.

Field data PhoneDesktopAll Scope All sites October 2026 edition · Desktop field outcomes · React sites only
Metric LCP INP CLS
React Scoped to 9,570 sites out of 210,902 analyzed (frameworks) Compare with all sites →
1

At a glance the headline numbers for Marketing pixels impact

Marketing pixels and tracking SDKs ranked by performance impact.

6
Providers ranked
After min-sites filter
2,848
Sites in sample
Combined across all items
2.0s
Best LCP (p75)
LinkedIn Insight
The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by LCP at p75, fastest first

# Provider LCP p75 Passing Sites
1 LinkedIn Insight 2.0s 86.5%
85
2 Pinterest Tag 2.2s 85.3%
63
3 TikTok Pixel 2.4s 79.2%
105
4 Microsoft/Bing UET 2.4s 76.4%
414
5 Meta Pixel 2.6s 73.5%
1,426
6 Google Ads Conversion 2.8s 67.8%
755
The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
3

Passing LCP per provider which group passes the LCP most often

ProviderSitesPassing LCPp75
Reddit Pixel 0.1% 7 100% 1.8s
LinkedIn Insight 0.9% 85 87% 2.0s
Twitter/X Pixel 0.1% 10 86% 1.8s
Pinterest Tag 0.7% 63 85% 2.2s
TikTok Pixel 1.1% 105 79% 2.4s
Microsoft/Bing UET 4.3% 414 76% 2.4s
Snapchat Pixel 0.1% 10 75% 2.4s
Meta Pixel 14.9% 1,426 74% 2.6s
Google Ads Conversion 7.9% 755 68% 2.8s
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

79% of TikTok Pixel sites pass LCP. Google Ads Conversion trails 11 points behind, leaving 32% of its sites failing. computed

The State of Web Vitals · October 2026 · React sites (9,570) · 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
Meta Pixel 14.9%
742.6s
10077ms
730.12
702.0s
431.8s
Google Ads Conversion 7.9%
682.8s
9878ms
690.15
642.2s
381.8s
Microsoft/Bing UET 4.3%
762.4s
10081ms
640.17
702.0s
461.7s
TikTok Pixel 1.1%
792.4s
10099ms
770.09
711.8s
521.5s
LinkedIn Insight 0.9%
872.0s
10080ms
800.09
781.6s
491.3s
Pinterest Tag 0.7%
852.2s
100129ms
770.09
741.8s
521.5s
Twitter/X Pixel 0.1%
861.8s
100111ms
1000.04
861.6s
671.3s
Snapchat Pixel 0.1%
752.4s
100119ms
880.05
632.0s
631.7s
Reddit Pixel 0.1%
1001.8s
100124ms
1000.05
1001.6s
100605ms
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.

TikTok Pixel leads on LCP: 79% of its sites pass. Google Ads Conversion trails at 68%. computed

The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Reviews (8) → Email marketing (8) → Consent platforms (16) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured