What is FID in concern with Page Speed?

[mariajonas]

First input delay; which measures the time between when a user first interacts with your site (i.e., when they click on something) to the time the browser is able to respond to the interaction.

[rscomponentseo]

Time to interactive (TTI) is a metric that measures how long it takes your app to load and become capable of quickly responding to user interactions, and First Input Delay (FID) is a metric that measures the delay that users experience when they interact with the page while it's not yet interactive.

[priyankaroy125]

Thanks for sharing the information

[nick0201]

How to check the FID duration?