Core Web Vitals are Google’s way of measuring real-world page experience. They matter for two reasons: they influence search rankings, and they correlate strongly with whether visitors stay long enough to convert. For a Singapore business, that makes them a sales issue, not just a developer’s concern.
The three metrics, in plain English
Largest Contentful Paint (LCP) measures how quickly the main content appears. Interaction to Next Paint (INP) measures how responsive the page feels when tapped. Cumulative Layout Shift (CLS) measures how much the layout jumps around while loading. Google’s official definitions and thresholds live at web.dev, and each metric has a clear “good”, “needs improvement” and “poor” band.
Why it’s a Singapore issue specifically
Singapore traffic skews mobile, and mobile is where slow sites suffer most. A page that feels instant on office Wi-Fi can crawl on a phone on the move — and that’s exactly when a potential customer gives up and taps back to the search results. Optimising for the phone first is the safest default.
Practical fixes that move LCP
Compress and correctly size images, preload the hero image, defer non-critical JavaScript, and avoid render-blocking resources. Reducing server response time helps too — slow hosting is a common, overlooked culprit that no amount of front-end tuning can fully hide. Test each change with PageSpeed Insights so you’re measuring rather than guessing.
Improving responsiveness (INP)
INP rewards pages that respond quickly to taps and clicks. Keep JavaScript lean, break up long tasks, and avoid loading heavy third-party scripts that block the main thread. A page that paints fast but freezes when tapped still frustrates visitors, so responsiveness deserves attention alongside load time.
Fixing layout shift (CLS)
Always set width and height on images, reserve space for embeds and ads, and avoid injecting content above what the user is already reading. Most CLS problems are simple once you know to look for them, and fixing them removes the maddening experience of tapping the wrong thing because the page moved.
Speed is a conversion lever
Treat performance as part of conversion work, not a separate technical chore. Faster, steadier pages keep more visitors engaged and lift enquiries — see how it connects to revenue leakage and the broader question of why sites don’t convert.
Is your site costing you sales in load time?
We audit speed alongside conversion. See the audit.
Check my site speed
