CLI referenceBrowser state & emulation
bl viewport
Get or set the browser viewport size
Get or set the browser viewport size
Usage
bl viewport [width] [height] [flags]Flags
| Flag | Description |
|---|---|
--dpr float | Device pixel ratio (e.g., 2 for Retina) |
Global flags
| Flag | Description |
|---|---|
--headless | Hide browser window (visible by default) |
--json | Output as JSON |
-v, --verbose | Enable debug logging |
Examples
bl viewport
# {"width":1280,"height":720,"devicePixelRatio":1}
bl viewport 1280 720
# Set viewport to 1280x720
bl viewport 375 812 --dpr 3
# Simulate iPhone X viewport