Load a URL in a persistent headless browser page (dev server, file://, or public site). Stays open for later click/screenshot calls.

Screenshot the current page and return it as a viewable image — see the actual rendered UI instead of guessing from code. Prefer selector (one element, cheapest) over the default viewport, and viewport over fullPage (priciest); use the smallest capture that answers the question. Requires navigate first.

Click an element by selector to reach a UI state (open a menu/modal/tab) before screenshotting it.

Set the value of an input/textarea/select by selector (Playwright locator.fill — clears then types, and dispatches the input/change events React controlled components need). Pass fields to fill several inputs in one call. Use type instead only for inputs that require per-keystroke keydown events.

Type into a field one key at a time (Playwright locator.pressSequentially), firing a keydown/keypress/keyup per character — for inputs whose handlers need real keystrokes and don't react to fill. Set clear to empty the field first.

Press a keyboard key such as 'Enter' (submit a form), 'Tab', or 'Escape'. With selector the key is sent to that element; without it, to the focused element. Supports Playwright key syntax (e.g. 'Control+A').

Resize the viewport, e.g. to check a responsive breakpoint before screenshotting.

Recent browser console messages and page errors — correlate a visual issue with a JS error.