How to Fix 5 Common Google Core Web Vitals Issues
A practical guide to diagnosing and resolving LCP, FID, and CLS problems using free tools.
Core Web Vitals are now a ranking factor. Ignoring them can cost you traffic. Here’s how to fix the five most common issues we see.
First, Largest Contentful Paint (LCP). The culprit is often a hero image. Compress it with a tool like Squoosh and serve it in WebP format. For text, ensure your font is preloaded.
Second, First Input Delay (FID). This is usually caused by heavy JavaScript. Defer non-critical scripts and break up long tasks. Consider using a plugin like WP Rocket.
Third, Cumulative Layout Shift (CLS). Reserve space for ads and images with explicit width/height attributes. Avoid injecting content above the fold after load.
Fourth, unused CSS. Tools like PurgeCSS can remove dead styles. For WordPress, try Asset CleanUp.
Fifth, server response time. Use a CDN and upgrade your hosting. A good target is under 200ms for Time to First Byte.