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PubSubJS adoption & performance trends

3 quarters of aggregate data

Unique domains per quarter

PubSubJS -- Unique domains per quarterPubSubJS -- Unique domains per quarter06.312.71925.3Q2 '26Q3 '26Q4 '26

Median composite score

PubSubJS -- Median composite scorePubSubJS -- Median composite score0255075100Q2 '26Q3 '26Q4 '26

Median Lighthouse performance

PubSubJS -- Median Lighthouse performancePubSubJS -- Median Lighthouse performance0255075100Q2 '26Q3 '26Q4 '26

Median Lighthouse accessibility

PubSubJS -- Median Lighthouse accessibilityPubSubJS -- Median Lighthouse accessibility0255075100Q2 '26Q3 '26Q4 '26

How this is calculated

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

Learn more about our methodology →

Raw data

QuarterUnique domainsCompositePerformanceAccessibility
Q2 '2623734392
Q3 '262857497
Q4 '262888597