Check mobile layout
Specify the screen size you want to test, and your coding agent renders the page at that size.
/shiplight verify http://localhost:3000 on mobile (390x844 viewport, touch enabled) —
check that the hamburger menu appears instead of the desktop navigation bar.Browser emulation supports viewport and device settings, touch input, user agent, color scheme, locale, time zone, and geolocation. You can use it to check a Japanese locale, dark mode, or location-specific behavior.
Review the layout
You receive screenshots at the requested viewport and a summary of how the layout responded, including which elements appeared, moved, or collapsed.
For a complete list of emulation settings and their defaults, see Browser Options.