Actionable tips for improving your site's LCP, INP, and CLS scores for better SEO.
Why Core Web Vitals Matter
Google's search algorithms are increasingly prioritizing user experience. In 2024, Core Web Vitals are no longer just 'nice to have'—they are a critical ranking factor. If your site is slow to load, shifts around while rendering, or takes too long to respond to a click, your SEO will suffer.
At Trilogicx, performance optimization is a standard part of our CI/CD pipeline, not an afterthought.
Tackling INP (Interaction to Next Paint)
INP has replaced FID as the new responsiveness metric. It measures the latency of every interaction throughout the entire lifecycle of the page. The culprit is almost always long JavaScript tasks blocking the main thread.
To fix this, we aggressively code-split our applications using Next.js dynamic imports. We defer the loading of heavy third-party scripts (like analytics or chat widgets) until the page is fully idle, ensuring the main thread is always free to handle user inputs.
Stabilizing Layouts (CLS)
Cumulative Layout Shift (CLS) happens when elements load dynamically and push content around. The fix is mathematically simple but often overlooked: explicitly define width and height attributes on all images and ads.
We use Next.js's native Image component (or pre-calculated aspect ratios) to reserve space in the DOM before the image even begins downloading. This results in a rock-solid UI that never jumps, providing a premium feel from the first byte.