INP (Interaction to Next Paint)

What is INP?

INP (Interaction to Next Paint) is a Core Web Vitals metric that measures how quickly a page responds to clicks, taps and key presses. The score is the time between a visitor’s action and the moment the page visibly reacts. INP replaced the metric FID in March 2024.

Why is INP important?

• Usability: a slow response feels like a broken page and drives visitors away.
• Part of Core Web Vitals: Google measures INP as one of the three Core Web Vitals.
• Conversion: a fast cart or form lowers the chance that visitors give up.

Examples of INP

• Good: 200 milliseconds or less.
• Needs improvement: between 200 and 500 milliseconds.
• Poor: more than 500 milliseconds, for example a filter menu in a store that hangs for half a second.

How do you improve INP?

Measure your INP with the Core Web Vitals report in Google Search Console or with PageSpeed Insights. Reduce heavy JavaScript, load third-party scripts only where needed and break up long tasks so the page responds faster (technical SEO).