We ran Core Web Vitals audits across forty client websites last quarter. The same four problems came up again and again — and none of them required a rebuild to fix.
1. Unoptimised hero images
The single biggest LCP killer. A 2.4 MB JPEG hero image on a 4G connection means your largest contentful paint will never be good. Serve WebP, size it correctly for the viewport, and preload it.
2. Layout shift from web fonts
Text renders in a fallback font, then jumps when the web font loads. Use font-display: swap with a metric-compatible fallback, and always reserve space for images and ad slots with explicit width and height attributes.
3. Third-party scripts loaded in the head
Chat widgets, heatmaps, five separate analytics tools — each one blocks rendering. Audit them ruthlessly. Most can be deferred; many can simply be deleted.
4. No caching strategy
Static assets should be cached for a year with a content hash in the filename. HTML should be cached at the edge. If your server is generating the same page for every visitor, you are paying for it in both hosting and conversions.
Fixing these four issues moved the average client site from a failing Core Web Vitals assessment to passing in under three weeks — and organic traffic followed.
Written by
Technonize Admin
Founder & Digital Strategist
Leading Technonize Media since 2010, helping 1,120+ businesses across 10+ countries grow through digital marketing that actually converts.
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