Website Resolution Tester

Preview how your website looks across different devices and screen sizes. A minimal, precise viewport testing tool covering devices from 2014 to today.

Share your target URL, resolution, and checked presets with teammates.

Resolution (Width × Height)

Launch

Check a preset to include it in Launch selected. Tap a device name or size to copy that resolution into width and height and scroll here to launch.

Device Presets

Use the checkbox to batch-launch sizes. Tap the device name or dimensions to load that size for a single launch.

Frequently Asked Questions