What it does.
A Cursor slash command that screenshots a page at mobile, tablet, and desktop widths and returns a pass/warn/fail layout audit in chat.
When to invoke it.
Invoke /responsive-preview in Cursor when you want an agent-run audit. Open the browser tool when you want synced preview panes and a Fix in Cursor button yourself.
Install it first.
Follow How to install portable skills, then the platform how-to for your host. Get the file from responsive-preview — never treat GitHub as the primary button.
Shop page versus browser tool.
Working tool: Responsive Preview — use it when you want to operate the UI yourself.
The shop page is Setup only.