Web and technology
FID
Abbreviation for First Input Delay
In short and in plain language
FID is a measure for web pages.
It measures the wait between the first input of a visitor and the page reply.
It is part of a group of key measures for web pages.
The value shows if a page feels slow or smooth.
Definition
FID describes the delay between a visitor's first input and the web page's response. The value belongs to the Core Web Vitals metrics. It shows how sluggish or smooth a page feels.