What is FID or First Input Delay?
FID measurement and score
How to get and optimize a good FID score?
Measuring FID with Google Search Console and PageSpeed Insights
Core Web Vitals and Google Page Experience, what should we remember?
What is FID or First Input Delay?
FID or First Input Delay is a new indicator implemented by Google in 2020. Also called " first input delay ", it measures the response time of a web page when an Internet user visits it. This unit of measurement is formidable for evaluating the quality of a website. Measuring both the user experience and the health of a website, albania phone number library the FID quantifies the responsiveness of the Internet user and the technicality of the site . Essential web signals were introduced by Google to increase the quality and performance of websites. The FID measures the time of interactivity. Given the importance of this data, the FID score for a web page should not be overlooked. It allows you to know if the page is boring and can also explain the bounce rate.

The FID can be defined as the measurement between the moment a user interacts with a web page for the first time. It also measures the moment the browser responds to it. To better understand the FID, let's take a concrete example. When you go to a web page, you perform an action. That of reading or observing the page then that of clicking on the menu, a button, a link. You create an interaction with the site. This is what the FID measures. The goal of the FID is therefore to quantify the responsiveness and interactivity of websites. It allows to improve the response time , to optimize the display. The goal is always to prioritize the user experience by offering quality navigation and reading.
FID measurement and score
FID is measured in milliseconds. There are three possible scores for Google 's algorithm :
Good, symbolized by the color green.
Needs Improvement, symbolized by the color orange.
Poor, symbolized by the color red.
Depending on the score, the penalty for the moment is minimal . On the other hand, it speaks for itself. The poorer your FID score, the less interactive your site is considered, the lower your bounce rate and your conversion rate.
A good FID score is between 0 and 0.1 seconds (or 100 milliseconds). This indicates the precision required and the speed measured. A bad FID score, considered poor, is around or exceeds 300 milliseconds (or 0.3 seconds).