Designer Essentials
Test Every Screen
Simultaneously.
Stop resizing your browser. Responsive Viewer displays your website on multiple device widths at once, with synchronized scrolling and interactions.
Get Responsive Viewer — Free
No Signup Required
Sync-Scroll Enabled
✦ iPhone 15 Pro ✦ iPad Air ✦ MacBook Pro 16″
✦ Google Pixel 8 ✦ Samsung S24 ✦ Generic Desktop
✦ iPhone 15 Pro ✦ iPad Air ✦ MacBook Pro 16″
✦ Google Pixel 8 ✦ Samsung S24 ✦ Generic Desktop
One URL. Infinite Perspectives.
The faster way to find breakpoint bugs before your users do.
Synced Interaction
Scroll, click, and type on one screen, and watch all other device screens follow in real-time.
Custom Viewports
Choose from 50+ device presets or create your own custom resolutions for specific testing needs.
Full-Page Captures
Coming Soon
Take screenshots of all device views simultaneously for your design handoff or portfolio.
Ready to ship perfect UI?
Download the lightweight extension and start testing instantly.
Add to Chrome for FreePart of the Pixellize developer suite.