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Prism adoption & performance trends

2 quarters of aggregate data

Unique domains per quarter

Prism -- Unique domains per quarterPrism -- Unique domains per quarter014.629.143.758.3Q2 '26Q3 '26

Median composite score

Prism -- Median composite scorePrism -- Median composite score0255075100Q2 '26Q3 '26

Median Lighthouse performance

Prism -- Median Lighthouse performancePrism -- Median Lighthouse performance0255075100Q2 '26Q3 '26

Median Lighthouse accessibility

Prism -- Median Lighthouse accessibilityPrism -- Median Lighthouse accessibility0255075100Q2 '26Q3 '26

How this is calculated

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

Learn more about our methodology →

Raw data

QuarterUnique domainsCompositePerformanceAccessibility
Q2 '2653734488
Q3 '262815192