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# Optimizing Core Web Vitals: Reducing INP and LCP to 99+ Score
- URL: https://vanta.planethemes.com/optimizing-core-web-vitals/
- Published: 2026-08-08T15:00:00.000Z
- Updated: 2026-08-20T13:46:07.000Z
- Description: Practical engineering strategies to achieve sub-100ms INP and top-tier Lighthouse performance scores.
- Author: Alex Rivers
- Tags: Web Development, #Import 2026-08-20 13:46

## 1\. Demystifying Interaction to Next Paint (INP)

INP measures user interface responsiveness by tracking the latency of all user interactions (clicks, taps, keypresses) throughout the page lifecycle.

## 2\. Deferring Non-Critical JavaScript Payloads

Always defer heavy analytics and secondary scripts until after main thread rendering is complete:

## 3\. Image Optimization & Priority Preloading

Always pre-render critical hero images with priority loading tags such as fetchpriority='high' and modern AVIF format.