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57 Device Viewports
Phones, tablets, and desktops from iPhone SE to 4K displays. Test your responsive design across every major device.
screenieResponsive Screenshot CLI
Capture 57 device viewports with one command
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Parallel Capture
Configurable concurrency for fast captures. Auto-detects optimal parallelism or customize with --concurrency flag.
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HTML Report
Visual grid of all captures with device labels. Opens automatically in your browser after capture completes.