The One Metric That Quietly Undoes a Great Store

Published 2026-09-26 · The DecisionLeak Blog

A store can score 100 on SEO and 100 on accessibility and still lose sales on one metric: speed. Owners never feel it because they browse on fast, cached connections while customers hit the page cold on mobile data. This guide explains Core Web Vitals (LCP, INP, CLS) in plain terms, why a slow page reads as untrustworthy, the usual causes (heavy images, third-party scripts, no CDN), and the unglamorous fixes that recover revenue.

The One Metric That Quietly Undoes a Great Store — read the full article on DecisionLeak, the AI website conversion audit that scores six decision dimensions, ties every leak to the exact element on the page, and hands you a prioritized fix list. Run a free scan.