Test Any Website in Modern Smartphone Viewports
Over 60% of all web traffic originates from mobile devices. Enter any domain above to simulate real device rendering, check responsive image loading, verify viewport settings, and ensure your site meets Google Mobile-First Indexing standards.
Device Emulation
Simulate iPhone 15, Pixel 8, Galaxy S23, and iPad viewports.
Viewport & WCAG
Verify pinch-to-zoom accessibility and width=device-width scaling.
Mobile Performance
Audit lazy loading, responsive srcset markup, and cellular page payload.