Interaction to Next Paint (INP)
Interaction to Next Paint (INP) is a Core Web Vital metric that measures responsiveness. INP measures the time from when a user interacts with the page (like a click or keypress) until the next visual update is shown on screen. It evaluates the entire duration of the interaction, including input delay, processing time, and presentation delay. A low INP score (good responsiveness) is important for a smooth user experience.
Related web performance terms
- IP Whitelisting
IP whitelisting is a security practice where a server or firewall is configured to grant access only to a specific list of trusted IP addresses.
- Image Optimization
This is an automated process Speed Kit uses to make image files as small as possible without sacrificing visual quality, which is crucial for fast loading times.
- Instant Loading
Instant Loading is a Speed Kit feature that caches the main HTML document and serves it instantly from the cache on subsequent visits, eliminating cold start delays.
- Interaction to Next Paint Subpart timings
Interaction to Next Paint Subpart timings breaks down the three components of INP: Input Delay (inputDelay): The time from when the user interacts until event listeners start to run.