AI & the web
Interaction to Next Paint
A responsiveness metric measuring delay from user interaction to the next displayed update.
In everyday use
A visitor presses a filter and waits for the result to appear.
What to keep in mind
It concerns interaction responsiveness, not just initial page loading.
Also searched as: INP
Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
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