What is First Input Delay (FID) and how to identify is detailed.
What is FID?
First Input Delay is a measurement of the time from when a user first interacts with a page (example: when they click a link, tap on a button, or use a custom, JavaScript-powered control) to the time when the browser is actually able to begin processing event handlers in response to that interaction. Learn more here:
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Part of Core Web Vitals
