Cohort Empirical Analysis

Shopify Core Web Vitals: Why 61.6% of Stores Fail

Evaluating real-world Chrome User Experience Report (CrUX) data across 25,400 Shopify stores to isolate the relationship between theme app count and mobile conversion friction.

Sample: 25,400 Stores•Published: September 2026•CC BY 4.0

Key Findings

Combined CWV Pass Rate38.4%61.6% fail LCP or INP

Median INP (p75)218msTarget: ≤ 200ms

Avg 3rd-Party Scripts22.4840 KB transfer weight

The App Density Correlation

Stores with fewer than 8 third-party apps achieved a 54.2% CWV pass rate, whereas stores with 20+ installed apps plummeted to 19.8% pass rate. Review widgets, popups, and multiple uncoordinated marketing tags account for over 70% of all measured long-task execution delays.

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