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>Optimizing Interaction to Next Paint

Optimizing Interaction to Next Paint

Did you know that 90% of time spent on most web pages is after page load? In this span of time, users are interacting with your website through a series of interactions such as clicks, taps, and keyboard inputs. The slower your website responds to those interactions, the more likely your users will have a negative user experience.

At Google, we’ve invested significant time in developing metrics to assess page responsiveness. The first was First Input Delay (FID), which is a load responsiveness metric that measures the input delay of the first interaction. However, we discovered that we needed a new metric that samples more than just the first interaction—and more than that interaction’s input delay.

To comprehensively assess overall page responsiveness, we’ve created the Interaction to Next Paint (INP) metric. INP samples all page interactions, and more than the input delay. In this talk, you’ll learn how INP works, why it matters, how to measure it, and how to improve it.


About The Speaker

Technical writer for Google Chrome

Technical writer for Google Chrome Jeremy Wagner is more of a writer than a web developer, but he does both anyway. On top of making websites for longer than he thought probable, he has written for A Book Apart, A List Apart, CSS-Tricks, and other publications. Jeremy will someday relocate to the remote wilderness where sand has not yet been taught to think. Until then, he will continue to reside in Minnesota's Twin Cities, bemoaning the existence of strip malls.


Sessions By Jeremy Wagner

Optimizing Interaction to Next Paint