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Isotope adoption & performance trends

2 quarters of aggregate data

Unique domains per quarter

Isotope -- Unique domains per quarterIsotope -- Unique domains per quarter01428.142.156.1Q2 '26Q3 '26

Median composite score

Isotope -- Median composite scoreIsotope -- Median composite score0255075100Q2 '26Q3 '26

Median Lighthouse performance

Isotope -- Median Lighthouse performanceIsotope -- Median Lighthouse performance0255075100Q2 '26Q3 '26

Median Lighthouse accessibility

Isotope -- Median Lighthouse accessibilityIsotope -- Median Lighthouse accessibility0255075100Q2 '26Q3 '26

How this is calculated

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

Learn more about our methodology →

Raw data

QuarterUnique domainsCompositePerformanceAccessibility
Q2 '2651744585
Q3 '267804479