Performance / INP
Interaction to Next Paint
Plain-language definitionA Core Web Vital that reflects how quickly a page provides visual feedback after user interaction. Heavy main-thread work is a common cause of poor results.
Why it matters
Use the term to make a better decision.
In practice, interaction to next paint matters when a team needs to connect a technical or creative choice to a visible change in clarity, performance, discovery, or conversion. The useful question is not whether the term sounds sophisticated. It is what decision it helps the team make.