Tutorials · June 14, 2026 · 5 min
Custom Viewport Sizes: Capturing Mobile and Desktop Views
Responsive websites render differently depending on screen size. Testing how a page looks on both mobile and desktop is a common requirement.
Setting width and height
GET /api/screenshot?url=https://example.com&width=375&height=812&key=YOUR_API_KEYUse widths around 375px to simulate common mobile devices, and 1920px for standard desktop resolutions.
Practical use cases
- QA teams verifying responsive breakpoints
- Marketing teams generating device mockups
- Agencies producing client-ready previews
Combining custom viewports with full_page=1 gives you a complete picture of how a page adapts across devices.