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Google Tag Manager adoption & performance trends

2 quarters of aggregate data

Unique domains per quarter

Google Tag Manager -- Unique domains per quarterGoogle Tag Manager -- Unique domains per quarter0659.51318.91978.42637.8Q2 '26Q3 '26

Median composite score

Google Tag Manager -- Median composite scoreGoogle Tag Manager -- Median composite score0255075100Q2 '26Q3 '26

Median Lighthouse performance

Google Tag Manager -- Median Lighthouse performanceGoogle Tag Manager -- Median Lighthouse performance0255075100Q2 '26Q3 '26

Median Lighthouse accessibility

Google Tag Manager -- Median Lighthouse accessibilityGoogle Tag Manager -- Median Lighthouse accessibility0255075100Q2 '26Q3 '26

How this is calculated

Each point is the median across all public Google Tag Manager audits completed that quarter. Quarters with fewer than 3 audits are skipped.

Learn more about our methodology →

Raw data

QuarterUnique domainsCompositePerformanceAccessibility
Q2 '262398734088
Q3 '2630794884