The State of Web Vitals

Tag managers on React sites

Google Tag Manager (95.0%), Matomo Tag Manager (4.6%), Tealium iQ (0.7%), Segment (1.9%), and Adobe Launch (0.2%) across 3,775 sites.

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

4.6% of React sites use Matomo Tag Manager tag managers, and 95% of those sites have a good INP, against 92% of all React sites.

The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 5,488 with phone field data · 3,775 sites with tag managersBy Arjen Karel · corewebvitals.io/state-of-cwv
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Core Web Vitals pass rate

Sites with Matomo Tag Manager tag managers have a good INP most often: 95%, against 92% of all React sites. Sites with Google Tag Manager tag managers have it least often, at 91%.

SitesGood, needs improvement, poor INPMedian
All React sites5,48892%90ms
Adobe Experience Platform Launch 0.2%6100%103ms
Matomo Tag Manager 4.6%12495%112ms
Segment (analytics.js) 1.9%3893%88ms
Google Tag Manager (GTM) 95.0%2,03891%105ms
Piwik PRO Tag Manager 0.2%575%137ms
Tealium iQ 0.7%2568%131ms
GoodNeeds improvementPoorSites: with Chrome field data
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 5,488 with phone field data · 3,775 sites with tag managersBy Arjen Karel · corewebvitals.io/state-of-cwv
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Tag managers usage

Google Tag Manager is the most used: 95.0% of React sites. Matomo Tag Manager is 4.6% of React sites.

Sites using each option (sites can use more than one) 3,775 sites
Google Tag Manager (GTM) 95.0%
Google Tag Manager (GTM) 95.0% Matomo Tag Manager 4.6% Segment (analytics.js) 1.9% Tealium iQ 0.7% Adobe Experience Platform Launch 0.2% Piwik PRO Tag Manager 0.2%
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 5,488 with phone field data · 3,775 sites with tag managersBy Arjen Karel · corewebvitals.io/state-of-cwv
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Tag managers per platform

On Wix, 100% of sites use Google Tag Manager tag managers, and 96% of Wix sites have a good INP, against 92% of all sites. On WordPress, 91% of sites use Google Tag Manager, and 96% of WordPress sites have a good INP.

PlatformTag managers on its sitesGood INP
React sites with tag managers 3,775 sitesGoogle Tag Manager (GTM) 95%92%
Wix 1,589 sitesGoogle Tag Manager (GTM) 100%96%
WordPress 1,450 sitesGoogle Tag Manager (GTM) 91%96%
Google Tag Manager (GTM) Matomo Tag Manager Segment (analytics.js) Tealium iQ Adobe Experience Platform Launch Piwik PRO Tag Manager
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 5,488 with phone field data · 3,775 sites with tag managersBy Arjen Karel · corewebvitals.io/state-of-cwv
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Tag managers or the platform

Does the platform explain the tag managers difference?

On WordPress, 95% of sites with Matomo Tag Manager tag managers have a good INP, against 95% of WordPress sites with Google Tag Manager. Within WordPress, sites with Matomo Tag Manager and Google Tag Manager have a good INP about equally often.

How container triggers execute third-party listeners on click and keypress

A tag manager's own loader is small, but click and form-submit triggers run synchronously inside user interaction frames. Among the 3,775 sites with a tag manager, 95.0% use Google Tag Manager (91% good INP) and 4.6% use Matomo Tag Manager (95% good INP), whereas sites running heavier enterprise containers such as Tealium iQ (0.7%, 68% good INP), Adobe Launch (0.2%, 100%), and Segment (1.9%, 93%) record lower good INP pass rates.

The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 5,488 with phone field data · 3,775 sites with tag managersBy Arjen Karel · corewebvitals.io/state-of-cwv
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Understanding tag managers

Audit container tags regularly to prune inactive pixels, replace synchronous All Elements click triggers with targeted selectors, and move marketing tags to server-side containers where possible. Across sites with a tag manager, 95.0% use Google Tag Manager (91% good INP), 4.6% use Matomo Tag Manager (95% good INP), and 1.9% use Segment (93% good INP).

Go fix it The case for limiting analytics and tracking scripts → The dataLayer INP yield pattern → Defer scripts until needed →
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 5,488 with phone field data · 3,775 sites with tag managersBy Arjen Karel · corewebvitals.io/state-of-cwv
Related signals Third-party categories → Optimization plugins → Consent platforms → CMS → By Arjen Karel · 9,570 crawled React sites (5,488 with phone Chrome field data, 3,775 sites with tag managers, October 2026) · How we measured