Responsive web design in 2025: mobile-first sites that convert

Responsive web design diagram with fluid layout, responsive images, and Core Web Vitals for mobile

Most visits now start on a phone. Global website traffic from mobile devices sits around the sixty to mid-sixty percent range in 2025, not ninety percent. That is still the majority and it keeps growing. Therefore responsive web design remains a non-negotiable for ranking, engagement, and conversions. Google had completed mobile-first indexing, which means your […]