Technical SEO
Interaction to Next Paint
Interaction to Next Paint measures the latency between a user’s interaction and the next visual update, reporting the worst interaction in a page visit.
What is interaction to next paint?
Interaction to Next Paint measures the latency between a user’s interaction and the next visual update, reporting the worst interaction in a page visit. The threshold for a good rating is 200 milliseconds at the 75th percentile.
What it changes
It replaced First Input Delay because it measures the whole interaction rather than only the delay before processing starts, which matches what users actually feel.
The mechanics
Improved by reducing long tasks on the main thread: breaking up heavy JavaScript, deferring non-critical work, and avoiding large synchronous layout recalculation on interaction.
A frequent error
It is not a loading metric. A page can load quickly and still fail, because the failure happens when somebody taps something.
Most disagreements about this turn out to be disagreements about the definition.
Where this comes up in the work
It is part of Marketplace Marketing, and more specifically of Regional marketplace marketing. Across the rest of the work it shows up in:
- Local SEO, since finding out whether the competitor’s address is a desk or a business is only as good as this is
- Ecommerce SEO, in which it is the first thing checked before making the shipping and returns terms findable before the basket
- Digital PR and Link Building, which cannot be done properly without it
- Google Ads Management, where getting it wrong shows up in working out whether the conversion the account optimises for is worth anything
What to check
Two questions that establish whether this is actually in order on a given site:
- Whether it survives a logged-out visit from a cold cache
- Whether the exception somebody added two years ago is still needed
Common questions
Who owns interaction to next paint in a business?
It needs one named owner rather than a shared responsibility. The natural home is analytics and measurement, since separating what is measured from what is modelled, in the report itself is where the consequence lands.
How much work is interaction to next paint?
Less than people expect to check and sometimes more than they expect to fix. Improved by reducing long tasks on the main thread: breaking up heavy JavaScript, deferring non-critical work, and avoiding large synchronous layout recalculation on interaction.
Where does interaction to next paint sit in the priority order?
It comes before work that assumes it is already handled, and after anything actively blocking indexation.
How do you prove interaction to next paint is worth fixing?
By measuring it rather than by argument. Improved by reducing long tasks on the main thread: breaking up heavy JavaScript, deferring non-critical work, and avoiding large synchronous layout recalculation on interaction. Read Analytics audit and rebuild for the standard approach and Attribution and incrementality for when the standard approach does not fit.
Is interaction to next paint just another name for something?
It is not a loading metric. A page can load quickly and still fail, because the failure happens when somebody taps something. Worth clarifying before agreeing to work on it. Next: New York. After that, Noida, which is where the trade-offs live.
Is interaction to next paint a ranking factor?
It replaced First Input Delay because it measures the whole interaction rather than only the delay before processing starts, which matches what users actually feel. The honest framing is that it removes a constraint rather than adding a boost. If the brief is still open, Home and trade services and Legal and professional services are the two that change it most often.
Take the guesswork out of the next quarter
One call, no sequence of follow-up emails afterwards. If the timing is wrong we will leave you to it.