What is replacing FID in Google's Core Web Vitals?

In March 2024, Google is replacing First Input Delay (FID) with Interaction to Next Paint (INP) as the new Core Web Vitals metric for measuring web page responsiveness.

When will INP replace FID in Google Search Console?

Interaction to Next Paint (INP) will officially replace First Input Delay (FID) in the Google Search Console Core Web Vitals report in March 2024. Search Console will begin including INP data prior to this date to help site owners prepare.

Why is Google replacing FID with INP?

Google is replacing FID with INP because First Input Delay has known limitations in measuring responsiveness. Interaction to Next Paint (INP) addresses these limitations more effectively to better evaluate a web page's overall user experience.

How does the INP metric update affect website owners?

Site owners need to evaluate and optimize their pages for the new INP metric. Fortunately, any previous improvements made for FID serve as a strong foundation for improving INP and overall page responsiveness.

Will perfect Core Web Vitals guarantee high Google Search rankings?

No, good stats in the Core Web Vitals report do not guarantee high search rankings. While Core Web Vitals are crucial for user experience, Google evaluates page experience holistically using multiple ranking signals.

What is Interaction to Next Paint (INP)?

Interaction to Next Paint (INP) is a new Core Web Vitals metric introduced by Google to measure a web page's overall responsiveness and user interaction experience, replacing the older First Input Delay (FID) metric.

Introducing INP for Core Web Vitals, FID to Go Away

TL;DR

What metric is replacing First Input Delay (FID) in Google's Core Web Vitals?

Core Definition: Interaction to Next Paint (INP) is the new Google Core Web Vitals metric for responsiveness that officially replaces First Input Delay (FID) in March 2024 to better evaluate a web page's user experience.

In an effort to provide better quality signals for web pages, the Google Chrome team is updating how it measures responsiveness. After extensive testing, a new metric has been selected to address the known limitations of previous measurement standards.

INP (Interaction to Next Paint) replaces FID (First Input Delay) as the primary responsiveness metric in March 2024.
Google Search Console will update its Core Web Vitals report to include INP and eventually phase out FID.
Previous optimizations made for FID serve as a strong foundation for improving INP.
Achieving strong Core Web Vitals is crucial, but it remains just one part of a holistic page experience required for good search rankings.

In early 2020, Google's Chrome Team introduced the Core Web Vitals to provide quality signals for web pages. Today, the Google Chrome team announced an upcoming change in the metrics for the Core Web Vitals better to evaluate the quality of a web page's user experience. This article explores this change and its meaning for Google Search and site owners.

A better responsiveness metric

One of the Core Web Vitals metrics, First Input Delay (FID), measures responsiveness, but FID has known limitations. This led the Chrome team to explore and seek feedback on a (then) experimental metric that addresses these limitations more effectively. In 2022, they announced Interaction to Next Paint (INP) as that new metric and started working with the community to test its efficacy.

After another year of testing and gathering feedback from the community, the Chrome team decided to promote INP as the new Core Web Vitals metric for responsiveness, effective March 2024, replacing FID. The Chrome team's blog post explains this change and the reasoning behind the new metric in more detail.

What this means for Google Search Console

The new metric, INP, will replace FID as part of the Core Web Vitals in March 2024. To help site owners and developers to take the necessary steps and evaluate their pages for the new metric, Search Console will include INP in the Core Web Vitals report later this year. When INP replaces FID in March 2024, the Search Console report will stop showing FID metrics and use INP as the new metric for responsiveness.

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What this means for site owners

If you have been following our guidance to improve Core Web Vitals, you will have considered the responsiveness of your pages already. The improvements made for FID are a good foundation to improve INP and the responsiveness of your pages.

We highly recommend that site owners achieve good Core Web Vitals for success with Search and ensure a great user experience. However, great page experience involves more than Core Web Vitals. Good stats within the Core Web Vitals report in Search Console or third-party Core Web Vitals reports don't guarantee good rankings.

To learn more about how Core Web Vitals fits into a holistic approach to page experience, see our guidance on page experience in Google Search results.

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You can find more information about the new metric in the Chrome team's blog post and guidance on optimizing your pages regarding INP in this guide on optimizing INP.

----------------------Originally Posted by Martin Splitt, Developer Relations Engineer, Google Search Relations team.

Partially edited for clarity; links replaced with information on aspiration.marketing where available. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

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