Web performance and Core Web Vitals: speed up your site
Speed is no longer a luxury but a ranking and conversion factor. We explain Core Web Vitals and how to make your site faster.
A website's speed directly affects both whether the user stays and how it ranks on Google. A slow site loses both visitors and visibility. Google measures this with the Core Web Vitals metrics.
What are Core Web Vitals?
- LCP (Largest Contentful Paint): time for the largest content to load — perceived speed.
- INP (Interaction to Next Paint): response time to interaction — how 'smooth' the site feels.
- CLS (Cumulative Layout Shift): content shifting while loading — visual stability.
Ways to speed up your site
Serve images in modern formats and correct sizes; reduce unnecessary JavaScript; defer non-critical resources; use caching and a CDN correctly. Most slowness comes from a few heavy resources — find those first.
Users don't notice a fast site; but they abandon a slow one. Speed is the quietest yet most effective design decision.
You can't speed up what you don't measure
Move with measurement, not guesses: real-user data and lab tests reveal the bottleneck. Performance isn't a one-off task but a continuously monitored metric. At Kerte we build fast, secure and scalable web apps with performance and SEO in mind from the start.