First Input Delay FID

What Is First Input Delay FID

First input delay (FID) measures the time from when a user first interacts with your site to when the page is first loaded. It’s important to measure this value because it can be used as an indicator of how responsive you are to users.

For example, if a user types “hi” into the search box and then waits for the page to load before they see any results, their experience could be considered slow. However, if they’re able to immediately see their results and make changes without waiting for the page to load, then this is a fast page.

It’s also important because it can indicate where users have problems navigating your site. If there’s a large amount of time between when they enter their query and when they see their results, then this could mean that there are no search results or that they’ve entered invalid data into the query box (for example, misspelling “hi”).

Why Is First Input Delay Important?

First input delay is important because it has a direct impact on user experience and conversion rates. If you have an entry form with two fields, each with an auto-filled value, and there’s no delay between when the user clicks on one field and when they click on another — they will want to fill out both fields, which is bad news for your site’s conversion rate:

This is because users who see multiple choices may fill out all of them at once rather than selecting one at a time (in this case, choosing their country).

If you have a slow FID, you may find that users abandon your site before they even get started because they can’t find what they’re looking for. This is especially important because content is king on any website — and making it easy to find can make all the difference.