# INP

Interaction to Next Paint — a Core Web Vitals metric that measures the browser response time for all user interactions throughout a page. It replaced FID in March 2024.

**INP (Interaction to Next Paint)** is a Core Web Vitals metric that evaluates the time it takes for all user interactions on a page (clicks, taps, keyboard input) to be processed by the browser and produce a visual result on the screen. It replaced FID in March 2024.

Target values:

- **Good:** below 200 ms
- **Needs improvement:** 200 – 500 ms
- **Poor:** above 500 ms

Unlike FID, INP evaluates the entire page lifecycle, and the worst interaction at the 75th percentile is typically reported. Therefore, even a single slow interaction can hurt the score.

To improve INP:

- Break up long JavaScript tasks (yieldToMain pattern)
- Remove unnecessary work from event handlers
- Lazy-load or defer third-party scripts
- Move render-blocking work to a Web Worker

**Tip:** Track INP with real user data (Search Console or CrUX); lab tests often do not reveal INP.

[← Back to Full Glossary](/content/en/sozluk/index.html)