Your online store gets traffic but disappointing sales? You're not alone — 97% of ecommerce visitors leave without buying. The problem isn't your products or ads; it's your website. These 12 proven website changes can increase online sales by 40-120% in 60-90 days. From checkout optimization to mobile responsiveness, product page layouts to trust signals — learn what separates 2% converters from 5%+ top performers. Wix Studio implementation included.